<SEC-DOCUMENT>0001292814-23-004798.txt : 20231129
<SEC-HEADER>0001292814-23-004798.hdr.sgml : 20231129
<ACCEPTANCE-DATETIME>20231129091942
ACCESSION NUMBER:		0001292814-23-004798
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20230930
FILED AS OF DATE:		20231129
DATE AS OF CHANGE:		20231129

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COMPANHIA DE SANEAMENTO BASICO DO ESTADO DE SAO PAULO-SABESP
		CENTRAL INDEX KEY:			0001170858
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER SUPPLY [4941]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			D5
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31317
		FILM NUMBER:		231448770

	BUSINESS ADDRESS:	
		STREET 1:		RUA COSTA CARVALHO, 300
		STREET 2:		SAO PAULO
		CITY:			SP
		STATE:			D5
		ZIP:			05429-900
		BUSINESS PHONE:		011-55-11-3388-8000

	MAIL ADDRESS:	
		STREET 1:		RUA COSTA CARVALHO, 300
		STREET 2:		SAO PAULO
		CITY:			SP
		STATE:			D5
		ZIP:			05429-900
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>sbsitr3q23_6k.htm
<DESCRIPTION>6-K
<TEXT>
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<DIV><FONT size=1></FONT>&nbsp;</DIV>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B>SECURITIES AND EXCHANGE COMMISSION </B></FONT></DIV>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B>Washington, DC 20549 </B></FONT></DIV>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

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<DIV><FONT size=1></FONT>&nbsp;</DIV>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B>FORM 6-K</B></FONT></DIV>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B>REPORT OF FOREIGN ISSUER</B><BR><B>PURSUANT TO RULE 13a-16 OR 15d-16 OF THE</B></FONT></DIV>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B>SECURITIES EXCHANGE ACT OF 1934</B></FONT></DIV>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

<DIV align=center>

<DIV><FONT color=#000000 size=2 face="Times New Roman"><B>For&nbsp;November, 2023</B></FONT></DIV><FONT color=#000000 size=2 face="Times New Roman"><B>(Commission File No. 1-31317) </B></FONT></DIV>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

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<DIV><FONT size=1></FONT>&nbsp;</DIV>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B>Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo - SABESP </B></FONT></DIV>

<DIV align=center><FONT color=#000000 size=2 face="Times New Roman"><I>(Exact name of registrant as specified in its charter) </I></FONT></DIV>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

<DIV align=center></DIV>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B>Basic Sanitation Company of the State of Sao Paulo - SABESP </B></FONT></DIV>

<DIV align=center><FONT color=#000000 size=2 face="Times New Roman"><I>(Translation of Registrant's name into English) </I></FONT></DIV>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

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<BR>

<DIV align=center><FONT color=#000000 size=2 face="Times New Roman"><B>Rua Costa Carvalho, 300 <BR>S&#227;o Paulo, S.P., 05429-900 <BR>Federative Republic of Brazil </B></FONT></DIV>

<DIV align=center><FONT color=#000000 size=2 face="Times New Roman"><I>(Address of Registrant's principal executive offices) </I></FONT></DIV><BR>

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<BR>

<DIV align=center><FONT color=#000000 size=2 face="Times New Roman">Indicate by check mark whether the registrant files or will file <BR>annual reports under cover Form 20-F or Form 40-F. <BR><BR>Form 20-F ___X___ Form 40-F ______</FONT></DIV>

<DIV align=center><FONT color=#000000 size=2 face="Times New Roman">Indicate by check mark if the registrant is submitting the Form 6-K <BR>in paper as permitted by Regulation S-T Rule 101(b)(1)__.</FONT></DIV>

<DIV align=center><FONT color=#000000 size=2 face="Times New Roman">Indicate by check mark if the registrant is submitting the Form 6-K <BR>in paper as permitted by Regulation S-T Rule 101(b)(7)__.</FONT></DIV>

<P></P>

<P align=center><FONT size=2 face="'Times New Roman, Times, Serif'">Indicate by check mark whether the registrant by furnishing the <BR>information contained in this Form is also thereby furnishing the <BR>information to the Commission pursuant to Rule 12g3-2(b) under <BR>the Securities Exchange Act of 1934. <BR><BR>Yes ______ No ___X___</FONT></P>

<P></P>

<DIV align=center><FONT color=#000000 size=2 face="Times New Roman">If "Yes" is marked, indicated below the file number assigned to the<BR>registrant in connection with Rule 12g3-2(b):</FONT> </DIV>


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  <TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO
BASICO EST SAO PAULO</P></TD>
  <TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P>
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  <TD>&nbsp;</TD>
  <TD>&nbsp;</TD></TR>
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<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 0.5pt; text-align: justify"></P>

<P STYLE="font: bold 14pt Times New Roman, Times, Serif; margin: 3.9pt 0 0 7.35pt">Table of Contents</P>

<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; border-collapse: collapse; font-size: 9pt">
  <tr>
    <td style="border-top: Gray 1pt solid; border-bottom: Gray 1pt dashed; font: bold 11pt Arial, sans-serif; padding-top: 6pt; padding-left: 12px; vertical-align: middle; text-align: left; width: 89%">Company Information</td>
    <td style="border-top: Gray 1pt solid; border-bottom: Gray 1pt dashed; font: 11pt Calibri, sans-serif; padding-top: 6pt; vertical-align: bottom; width: 11%">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Capital Breakdown</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">1</td></tr>
  <tr>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 12px; font: bold 11pt Arial, sans-serif; vertical-align: middle; text-align: left">Parent Company' Financial Statements</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font: 11pt Calibri, sans-serif; vertical-align: bottom">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Financial Position &ndash; Assets</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">2</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Financial Position &ndash; Liabilities</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">3</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Income Statement</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">5</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Comprehensive Income</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">7</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Cash Flows (Indirect Method)</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">8</td></tr>
  <tr>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-weight: bold; font-family: Arial, sans-serif; vertical-align: middle; text-align: left">Statement of Changes in Equity</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font: 11pt Calibri, sans-serif; vertical-align: bottom">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 36px; font-family: Arial, sans-serif; text-align: left">01/01/2023 to 09/30/2023</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">10</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 36px; font-family: Arial, sans-serif; text-align: left">01/01/2022 to 09/30/2022</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">11</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Value Added</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">12</td></tr>
    <tr>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 12px; font: bold 11pt Arial, sans-serif; vertical-align: middle; text-align: left">Consolidated Financial Statements</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font: 11pt Calibri, sans-serif; vertical-align: bottom">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Financial Position &ndash; Assets</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">13</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Financial Position &ndash; Liabilities</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">14</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Income Statement</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">16</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Comprehensive Income</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">18</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Cash Flows (Indirect Method)</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">19</td></tr>
  <tr>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-weight: bold; font-family: Arial, sans-serif; vertical-align: middle; text-align: left">Statement of Changes in Equity</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font: 11pt Calibri, sans-serif; vertical-align: bottom">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 36px; font-family: Arial, sans-serif; text-align: left">01/01/2023 to 09/30/2023</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">21</td></tr>

  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Statement of Value Added</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">22</td></tr>
  <tr>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 12px; font-family: Arial, sans-serif; vertical-align: middle; text-align: left">Comments on the Company' Performance&nbsp;</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">23</td></tr>

  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 12px; font-family: Arial, sans-serif; text-align: left">Notes to the Quarterly Information</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">34</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 12px; font-family: Arial, sans-serif; text-align: left">Comments on the Company' Projections</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">104</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 12px; font-family: Arial, sans-serif; text-align: left">Other Information Deemed as Relevant by the Company</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">105</td></tr>
  <tr>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 12px; font: bold 11pt Arial, sans-serif; vertical-align: middle; text-align: left">Reports and Statements</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font: 11pt Calibri, sans-serif; vertical-align: bottom">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Unqualified Reports on Special Review</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">107</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Executive Officers' Statement on the Financial Statements</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">109</td></tr>
  <tr style="vertical-align: bottom">
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; padding-left: 24px; font-family: Arial, sans-serif; text-align: left">Executive Officers' Statement on the Report of Independent Registered Public Accounting Firm</td>
    <td style="border-bottom: Gray 1pt dashed; padding-top: 6pt; font-family: Arial, sans-serif; text-align: right">110</td></tr>
  </table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>



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  <TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO
BASICO EST SAO PAULO</P></TD>
  <TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P>
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<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 4.1pt 0 0 7.35pt"><B>Company Information / Capital Breakdown</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 8.5pt 0 0"><B>&nbsp;</B></P>

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    <TD STYLE="width: 27%; padding-top: 3.7pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Number of Shares</B></FONT></TD>
    <TD STYLE="width: 73%; padding-top: 3.7pt; padding-right: 278.25pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Current Quarter</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top; background-color: #D2D2D2">
    <TD STYLE="padding-left: 2pt; line-height: 10.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>(Unit)</B></FONT></TD>
    <TD STYLE="padding-right: 278.25pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>09/30/2023</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top; background-color: gainsboro">
    <TD STYLE="padding-top: 3.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Paid-up Capital</B></FONT></TD>
    <TD STYLE="text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Common</B></FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 278.25pt; text-align: right"><FONT STYLE="font-size: 8pt">683,509,869</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: darkgray 1pt dashed; padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Preferred</B></FONT></TD>
    <TD STYLE="border-bottom: darkgray 1pt dashed; padding-top: 2.35pt; padding-right: 278.25pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top; background-color: whitesmoke">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Total</B></FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 278.25pt; text-align: right"><FONT STYLE="font-size: 8pt">683,509,869</FONT></TD></TR>
  <TR STYLE="vertical-align: top; background-color: gainsboro">
    <TD STYLE="padding-top: 3.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Treasury Shares</B></FONT></TD>
    <TD STYLE="text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Common</B></FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 278.25pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: darkgray 1pt dashed; padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Preferred</B></FONT></TD>
    <TD STYLE="border-bottom: darkgray 1pt dashed; padding-top: 2.35pt; padding-right: 278.25pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top; background-color: whitesmoke">
    <TD STYLE="padding-top: 1.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Total</B></FONT></TD>
    <TD STYLE="padding-top: 1.3pt; padding-right: 278.25pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
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<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 4.1pt; margin-right: 81.55pt; margin-bottom: 0"><B>Parent Company&rsquo;s Financial Statements
/ Statement of Financial Position - Assets</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 4.1pt; margin-right: 81.55pt; margin-bottom: 0"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 10%; padding-left: 2pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 50%; padding-left: 2.25pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%; padding-right: 20.65pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 18%; padding-right: 1.85pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Previous Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding-left: 2pt; line-height: 10.05pt; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 20.65pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.9pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>12/31/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Total Assets</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">58,981,894</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">57,207,765</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Current Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">7,119,916</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">7,284,664</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Cash and Cash Equivalents</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">1,592,888</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">1,867,485</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Investments</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">1,381,568</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">1,677,873</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Investments Valued at Amortized Cost</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">1,381,568</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">1,677,873</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Accounts Receivable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">3,626,628</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">3,268,367</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Customers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">3,393,831</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">3,062,574</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.03.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Receivables</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">232,797</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">205,793</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.03.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Related-Party Balances</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">232,797</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">205,793</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Inventories</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">120,608</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">124,247</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.06</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Recoverable Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">262,742</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">242,906</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.06.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Current Recoverable Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">262,742</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">242,906</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.08</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Current Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">135,482</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">103,786</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.08.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">135,482</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">103,786</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.08.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Restricted Cash</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">53,736</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">37,474</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.08.03.20</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">81,746</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">66,312</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Noncurrent Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">51,861,978</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">49,923,101</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Long-Term Assets</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">9,415,049</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">10,105,800</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Accounts Receivable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">214,526</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">215,234</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Trade Receivables</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">214,526</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">215,234</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.09</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Receivables from Related Parties</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">941,047</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">950,950</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.09.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Receivables from Controlling Shareholders</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">941,047</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">950,950</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Noncurrent Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">8,259,476</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">8,939,616</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Escrow Deposits</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">130,795</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">170,093</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Water and Basic Sanitation National Agency &ndash; ANA</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">3,463</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">9,193</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Contract Asset </FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">7,889,956</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">8,613,968</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10.20</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">235,262</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">146,362</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Investments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">203,057</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">157,491</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Interest</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">156,367</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">110,765</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Interest in Jointly-Owned Subsidiaries</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">124,120</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">104,666</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Investments</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">32,247</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">6,099</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Investment Properties</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">46,690</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">46,726</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Property, Plant and Equipment</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">418,424</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">338,939</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Intangible Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">41,825,448</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">39,320,871</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Intangible Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">41,825,448</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">39,320,871</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Concession Agreements</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">1,123,288</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">1,151,365</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Program Contracts</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">20,906,853</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">19,602,451</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Service Contracts</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">19,126,055</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">17,870,451</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Software License of Use</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">532,131</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">595,404</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Right of Use</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">137,121</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">75,052</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Right of Use &ndash; Investments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.75pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">26,148</FONT></TD></TR>
  </TABLE>

<P STYLE="font: 11pt/193% Arial, Helvetica, Sans-Serif; margin: 4.1pt 81.55pt 0 7.35pt">&nbsp;</P>

<!-- Field: Page; Sequence: 4 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->2<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 4.1pt; margin-right: 67.35pt; margin-bottom: 0"><B>Parent Company&rsquo;s Financial Statements
/ Statement of Financial Position &ndash; Liabilities</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 4.1pt; margin-right: 67.35pt; margin-bottom: 0"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 10%; padding-left: 2pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 50%; padding-left: 2.25pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%; padding-right: 20.6pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 18%; padding-right: 1.8pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Previous Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding-left: 2pt; line-height: 10.05pt; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 20.6pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.85pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>12/31/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Total Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">58,981,894</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">57,207,765</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Current Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">7,059,252</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">6,657,342</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Social and Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">909,606</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">498,504</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Social Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">37,023</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">64,801</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">872,583</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">433,703</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Suppliers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">518,199</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">430,946</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Domestic Suppliers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">518,199</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">430,946</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">310,157</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">293,461</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Federal Tax Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">304,022</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">282,820</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Income Tax and Social Contribution Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">108,272</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Pis-Pasep and Cofins Payable</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">115,377</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">134,624</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">INSS (Social Security Contribution) Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">44,393</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">44,515</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01.20</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Federal Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">35,980</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">103,681</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Municipal Tax Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">6,135</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">10,641</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,652,150</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,245,960</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,221,385</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,389,864</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">In Local Currency</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">976,719</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,077,277</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">In Foreign Currency</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">244,666</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">312,587</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Debentures</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,309,459</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">739,534</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Financing through Lease</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">121,306</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">116,562</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,654,647</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,264,433</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Payables to Related Parties</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,871</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,694</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Payables to Controlling Shareholders</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,871</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,694</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,652,776</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,262,739</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Dividends and Interest on Capital Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">553</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">741,725</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Services Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">756,547</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">723,242</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Refundable Amounts</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">28,481</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">30,885</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Program Contract Commitments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">26,379</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">100,188</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.07</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">239,831</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">222,413</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.09</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Indemnities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">9,201</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">8,556</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.20</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">591,784</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">435,730</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,014,493</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">924,038</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax, Social Security, Labor, and Civil Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">644,973</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">510,807</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">37,679</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">34,382</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan and Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">503,324</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">385,580</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Civil Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">103,970</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">90,845</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">369,520</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">413,231</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Environmental Liabilities and Decommissioning</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">20,537</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">15,289</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Customers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">157,677</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">141,491</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Suppliers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">191,306</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">256,451</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Noncurrent Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">22,328,786</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">23,216,890</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">16,350,740</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">16,712,711</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">9,638,484</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">9,167,759</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">In Local Currency</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">7,399,232</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">6,704,588</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">In Foreign Currency</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,239,252</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,463,171</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Debentures</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">6,351,631</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">7,202,296</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 5 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->3<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 4.1pt; margin-right: 67.35pt; margin-bottom: 0"><B>Parent Company&rsquo;s Financial Statements
/ Statement of Financial Position &ndash; Liabilities</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 4.1pt; margin-right: 67.35pt; margin-bottom: 0"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 10%; padding-left: 2pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 50%; padding-left: 2.25pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%; padding-right: 20.6pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 18%; padding-right: 1.8pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Previous Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding-left: 2pt; line-height: 10.05pt; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 20.6pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.85pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>12/31/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Financing through Lease</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">360,625</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">342,656</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">5,202,780</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">5,628,155</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">5,202,780</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">5,628,155</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,126,918</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,150,191</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Program Contract Commitments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">11,851</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">12,197</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,583,118</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,736,768</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.07</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Indemnities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">14,438</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">17,508</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.08</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">100,542</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,620</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.09</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Cofins/Pasep</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">159,937</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">159,723</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.20</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">205,976</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">550,148</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">72,125</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">189,278</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Income Tax and Social Contribution</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">72,125</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">189,278</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.03.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Income Tax and Social Contribution</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">72,125</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">189,278</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">703,141</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">686,746</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax, Social Security, Labor, and Civil Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">199,380</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">291,317</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">44,660</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">29,113</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan and Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">148,253</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">254,718</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Civil Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">6,467</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">7,486</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">503,761</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">395,429</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Environmental Liabilities and Decommissioning</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">453,877</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">391,547</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Customers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">5,092</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">3,306</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Suppliers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">44,792</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">576</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">29,593,856</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">27,333,533</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Paid-Up Capital</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">15,000,000</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Profit Reserves</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">12,078,963</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">12,155,890</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Legal Reserve</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,688,428</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,688,428</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.04.08</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Additional Dividend Proposed</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.7pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; text-align: right"><FONT STYLE="font-size: 9pt">76,927</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.04.10</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Reserve for Investments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">10,390,535</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">10,390,535</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Retained Earnings/Accumulated Losses</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Valuation Adjustments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.8pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">177,643</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 6 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->4<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt; margin-left: 7.35pt"><B>Parent Company&rsquo;s Financial Statements
/ Income Statement</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt; margin-left: 7.35pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; padding-left: 2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 37%; padding-left: 8.2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 20%; padding-right: 8.1pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 13%; padding-right: 10.3pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Current</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 6.85pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Same Quarter of the</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 3.65pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Previous</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 2pt; line-height: 8pt; text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="padding-right: 8.1pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="padding-right: 8.05pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD>
    <TD STYLE="padding-right: 4.65pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Previous Year</B></FONT></TD>
    <TD STYLE="padding-right: 1.45pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 8.05pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 4.65pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2022 to 09/30/2022</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.45pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.01</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Revenue from Sales and/or Services</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">6,453,246</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">18,306,152</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">5,987,739</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">16,123,529</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Cost of Sales and/or Services</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-3,944,519</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-11,808,917</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-3,767,593</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-10,415,881</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.02.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Cost of Sales and/or Services</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-2,641,363</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-8,117,914</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-2,447,695</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-7,098,988</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.02.02</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Construction Costs</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,303,156</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-3,691,003</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,319,898</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-3,316,893</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.03</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Gross Profit</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">2,508,727</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">6,497,235</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">2,220,146</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">5,707,648</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Operating Expenses/Income</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-802,158</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-2,327,312</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-700,441</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-2,139,751</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Selling Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-393,738</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,284,863</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-369,876</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,230,614</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.01.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Selling Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-237,074</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-747,968</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-234,054</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-664,166</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.01.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Allowance for Doubtful Accounts</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-156,664</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-536,895</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-135,822</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-566,448</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">General and Administrative Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-419,083</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,134,613</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-333,719</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-928,714</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.04</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Other Operating Income</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">14,281</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">93,241</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">22,115</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">45,985</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.04.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Other Operating Income</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">16,610</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">104,218</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">24,362</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">50,704</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.04.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Cofins and Pasep</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-2,329</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-10,977</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-2,247</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-4,719</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.05</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Other Operating Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-8.253</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-22,093</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-24,902</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-43,856</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.06</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Equity Pickup</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">4,635</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">21,016</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">5,941</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">17,448</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.05</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Income before Financial Result and Taxes</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">1,706,569</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">4,169,923</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">1,519,705</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">3,567,897</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Result</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-428,920</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-702,496</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">118,508</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">134,257</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.01</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Revenue</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">182,100</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">606,392</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">496,042</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">925,214</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.01.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Revenue</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">190,756</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">635,193</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">526,935</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">976,419</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.01.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Exchange Variation Gains</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">338</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">909</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.6pt; text-align: right"><FONT STYLE="font-size: 8pt">-147</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.4pt; text-align: right"><FONT STYLE="font-size: 8pt">443</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.01.03</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Cofins and Pasep</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-8.994</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-29,710</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-30,746</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-51,648</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-611,020</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,308,888</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-377,534</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-790,957</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.02.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-561,101</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,606,501</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-404,793</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,347,537</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.02.02</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Exchange Variation Losses</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-49,919</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">297,613</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">27,259</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">556,580</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.07</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Profit before Taxes on Income</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">1,277,649</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">3,467,427</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">1,638,213</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">3,702,154</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.08</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Income Tax and Social Contribution</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-431,354</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,130,177</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-557,153</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,223,097</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.08.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Current</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-461,143</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,247,330</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">-501,204</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,170,884</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.08.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Deferred</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">29,789</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">117,153</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">-55,949</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.45pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">-52,213</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 7 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->5<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 4.1pt; margin-bottom: 0pt"><B>Parent Company&rsquo;s Financial Statements
/ Income Statement</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; padding-left: 2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 35%; padding-left: 8.2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%; padding-right: 8.2pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 13%; padding-right: 10.5pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Current</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 7.15pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Same Quarter of the</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 4.05pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Previous</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 2pt; line-height: 8pt; text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="padding-right: 8.2pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="padding-right: 8.25pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD>
    <TD STYLE="padding-right: 4.95pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Previous Year</B></FONT></TD>
    <TD STYLE="padding-right: 1.85pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 8.25pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 4.95pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2022 to 09/30/2022</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.85pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.09</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Net Income from Continuing Operations</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">846,295</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 4.95pt; text-align: right"><FONT STYLE="font-size: 8pt">1,081,060</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 8pt">2,479,057</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3,11</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Profit/Loss for the Period</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">846,295</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.95pt; text-align: right"><FONT STYLE="font-size: 8pt">1,081,060</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 8pt">2,479,057</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Earnings per Share - (Reais/Share)</FONT></TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99.01</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Basic Earnings per Share</FONT></TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99.01.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Common </FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">1.23816</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.3pt; text-align: right"><FONT STYLE="font-size: 8pt">3.41948</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.95pt; text-align: right"><FONT STYLE="font-size: 8pt">1.58163</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 8pt">3.62695</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Diluted Earnings per Share</FONT></TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99.02.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Common </FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.25pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">1.23816</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.3pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">3.41948</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.95pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">1.58163</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.9pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">3.62695</FONT></TD></TR>
  </TABLE>

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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->6<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Parent Company&rsquo;s Financial Statements
/ Statement of Comprehensive Income</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; padding-left: 2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 32%; padding-left: 8.2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 25%; padding-right: 8.1pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 13%; padding-right: 10.35pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Current</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 6.95pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Same Quarter of the</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 3.8pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Previous</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 2pt; line-height: 8pt; text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="padding-right: 8.1pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="padding-right: 8.1pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD>
    <TD STYLE="padding-right: 4.75pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Previous Year</B></FONT></TD>
    <TD STYLE="padding-right: 1.6pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 8.1pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 4.75pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2022 to 09/30/2022</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.6pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">4.01</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Net Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">846,295</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 4.75pt; text-align: right"><FONT STYLE="font-size: 8pt">1,081,060</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.6pt; text-align: right"><FONT STYLE="font-size: 8pt">2,479,057</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">4.03</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Comprehensive Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">846,295</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.75pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">1,081,060</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.6pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">2,479,057</FONT></TD></TR>
  </TABLE>

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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->7<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Parent Company&rsquo;s Financial Statements
/ Statement of Cash Flows &ndash; Indirect Method</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 9%; padding-right: 7.45pt; padding-left: 2pt; line-height: 10pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 49%; padding-left: 7.75pt; line-height: 10.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 21%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 8.25pt 0 0; text-align: right"><B>YTD Current</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 5.75pt 0 0; text-align: right"><B>Year</B></P></TD>
    <TD STYLE="width: 21%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 4.4pt 0 0; text-align: right"><B>YTD Previous</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 1.95pt 0 0; text-align: right"><B>Year</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 5.75pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 2pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Cash from Operating Activities</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">2,997,075</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">2,569,167</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Cash from Operations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">8,001,546</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">6,712,386</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Profit before Income Tax and Social Contribution</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">3,467,427</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">3,702,154</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Provision and Inflation Adjustments on Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">331,157</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">282,463</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Finance Charges from Customers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-285,514</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-247,355</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.05</FONT></TD>
    <TD STYLE="padding-top: 2pt; padding-right: 11pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Residual Value of Property, Plant and Equipment, Intangible Assets, and Investment Properties Written-off</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">7,241</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">23,652</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.06</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Depreciation and Amortization</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">2,041,377</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">1,801,622</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.07</FONT></TD>
    <TD STYLE="padding-top: 2pt; padding-right: 11pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Interest on Borrowings and Financing Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">960,460</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">776,535</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.65pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.08</FONT></TD>
    <TD STYLE="padding-top: 1.9pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Inflation Adjustment and Exchange Gains (Losses) on Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.65pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-174,497</FONT></TD>
    <TD STYLE="padding-top: 1.65pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-409,109</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.09</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest and Inflation Adjustments on Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">13,976</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">18,484</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.10</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest and Inflation Adjustments on Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-88,031</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-394,968</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.11</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Allowance for Doubtful Accounts</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">536,895</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">566,448</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.12</FONT></TD>
    <TD STYLE="padding-top: 2pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Provision for Consent Decree (TAC) and Knowledge Retention Program (KRP)</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">571,275</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,238</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.13</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Pickup</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-21,016</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-17,448</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.14</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest and Inflation Adjustment - PPP</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">366,143</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">366,890</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.15</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Adjustments</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">17,629</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">11,397</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.16</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Transfer to the S&atilde;o Paulo Municipal Government</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">185,838</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">167,655</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.17</FONT></TD>
    <TD STYLE="padding-top: 2pt; padding-right: 3.5pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Construction Margin on Intangible Assets Arising from Concession Agreements</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-84,577</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-76,289</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.18</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">155,763</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">141,493</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Changes in Assets and Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,465,084</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,938,502</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Assets</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-563,914</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-483,163</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Related-Party Balances and Transactions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">8,325</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-311,635</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Inventories</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">3,639</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-6,553</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Taxes Recoverable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-19,836</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">124,392</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Receivables</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-93,738</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-3,630</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Escrow Deposits</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">48,850</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">17,907</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.08</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Trade Payables and Contractors</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-409,644</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-224,046</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.09</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Social and Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-30,917</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">101,473</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.10</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-179,036</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-169,884</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.11</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Taxes and Contributions Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-168,118</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-85,843</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.12</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Services Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-152,533</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-49,493</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.13</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-684,069</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-426,677</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.14</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-224,307</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-422,684</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.15</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Cofins/Pasep</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">214</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">1,334</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,539,387</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,204,717</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest Paid</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,476,871</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,145,888</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.03.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Income Tax and Social Contribution Paid</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,062,516</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,058,829</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Cash from Investing Activities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,984,331</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,723,972</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Acquisition of Contract Assets and Intangible Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,209,493</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,507,631</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Acquisition of Property, Plant and Equipment</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-88,242</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-40,472</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Investments</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,676</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Restricted Cash</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">-16,262</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">-9,194</FONT></TD></TR>
  </TABLE>

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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->8<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Parent Company&rsquo;s Financial Statements
/ Statement of Cash Flows &ndash; Indirect Method</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 9%; padding-right: 7.45pt; padding-left: 2pt; line-height: 10pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 43%; padding-left: 7.75pt; line-height: 10.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 27%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 8.3pt 0 0; text-align: right"><B>YTD Current</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 5.8pt 0 0; text-align: right"><B>Year</B></P></TD>
    <TD STYLE="width: 21%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 4.45pt 0 0; text-align: right"><B>YTD Previous</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 2pt 0 0; text-align: right"><B>Year</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 5.8pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 2.05pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.07</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Investments</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">331,342</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">833,325</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Cash from Financing Activities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,287,341</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">225,634</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Funding</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,391,821</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">2,690,603</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Amortization</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,276,199</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,369,327</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Payment of Interest on Capital</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-823,671</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-603,541</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-502,375</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-476,097</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Program Contract Commitments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-76,917</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">-16,004</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Increase (Decrease) in Cash and Cash Equivalents</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-274,597</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">1,070,829</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.05.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Opening Balance of Cash and Cash Equivalents</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,867,485</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">717,929</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">6.05.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Closing Balance of Cash and Cash Equivalents</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">1,592,888</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">1,788,758</FONT></TD></TR>
  </TABLE>

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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Parent Company&rsquo;s Financial Statements
/ Statement of Changes in Equity - 01/01/2023 to 09/30/2023</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; border-bottom: black 1pt solid; padding-right: 5.5pt; padding-left: 2pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 7pt; line-height: 96%"><B>Code</B></FONT></TD>
    <TD STYLE="width: 28%; border-bottom: black 1pt solid; padding-left: 5.95pt; line-height: 7.8pt; text-align: left"><FONT STYLE="font-size: 7pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 12%; border-bottom: black 1pt solid; padding-left: 43.25pt; line-height: 96%; text-align: left; text-indent: -4.7pt"><FONT STYLE="font-size: 7pt; line-height: 96%"><B>Paid-up Capital</B></FONT></TD>
    <TD STYLE="width: 12%; border-bottom: black 1pt solid; padding-right: 14.8pt; padding-left: 8.8pt; line-height: 96%; text-align: right; text-indent: 4.2pt"><FONT STYLE="font-size: 7pt; line-height: 96%"><B>Capital Reserves, Options Granted, and Treasury Shares</B></FONT></TD>
    <TD STYLE="width: 11%; border-bottom: black 1pt solid; padding-right: 11.7pt; line-height: 7.8pt; text-align: right"><FONT STYLE="font-size: 7pt"><B>Profit Reserves</B></FONT></TD>
    <TD STYLE="width: 11%; border-bottom: black 1pt solid">
    <P STYLE="font: 7pt/7.7pt Arial, Helvetica, Sans-Serif; margin: 0 15.8pt 0 0; text-align: right"><B>Retained Earnings/Accumulated</B></P>
    <P STYLE="font: 7pt/7.95pt Arial, Helvetica, Sans-Serif; margin: 0 13.85pt 0 0; text-align: right"><B>Losses</B></P></TD>
    <TD STYLE="width: 11%; border-bottom: black 1pt solid">
    <P STYLE="font: 7pt/7.7pt Arial, Helvetica, Sans-Serif; margin: 0 16.2pt 0 0; text-align: right"><B>Other Comprehensive</B></P>
    <P STYLE="font: 7pt/7.95pt Arial, Helvetica, Sans-Serif; margin: 0 14.2pt 0 0; text-align: right"><B>Income</B></P></TD>
    <TD STYLE="width: 10%; border-bottom: black 1pt solid; padding-right: 1.9pt; line-height: 7.8pt; text-align: right"><FONT STYLE="font-size: 7pt"><B>Equity</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.01</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Opening Balances</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.8pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 11.75pt; text-align: right"><FONT STYLE="font-size: 7pt">12,155,890</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 13.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 7pt">27,333,533</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.03</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Restated Opening Balances</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.8pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.75pt; text-align: right"><FONT STYLE="font-size: 7pt">12,155,890</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 7pt">27,333,533</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.04</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Capital Transactions with Partners</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 7pt">-76,927</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 7pt">-76,927</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.9pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.04.08</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Additional Minimum Dividends, approved</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 7pt">-76,927</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 13.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 7pt">-76,927</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.05</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Total Comprehensive Income</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.9pt; text-align: right"><FONT STYLE="font-size: 7pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 7pt">2,337,250</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.05.01</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Net Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.9pt; text-align: right"><FONT STYLE="font-size: 7pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 7pt">2,337,250</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; line-height: 7.05pt; text-align: left"><FONT STYLE="font-size: 7pt">5.07</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; line-height: 7.05pt; text-align: left"><FONT STYLE="font-size: 7pt">Closing Balances</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.8pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.75pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">12,078,963</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.9pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.95pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">29,593,856</FONT></TD></TR>
  </TABLE>

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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->10<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Parent Company&rsquo;s Financial Statements
/ Statement of Changes in Equity - 01/01/2022 to 09/30/2022</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; border-bottom: black 1pt solid; padding-right: 5.5pt; padding-left: 2pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 7pt; line-height: 96%"><B>Code</B></FONT></TD>
    <TD STYLE="width: 28%; border-bottom: black 1pt solid; padding-left: 5.95pt; line-height: 7.8pt; text-align: left"><FONT STYLE="font-size: 7pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 12%; border-bottom: black 1pt solid; padding-left: 43.25pt; line-height: 96%; text-align: left; text-indent: -4.7pt"><FONT STYLE="font-size: 7pt; line-height: 96%"><B>Paid-up Capital</B></FONT></TD>
    <TD STYLE="width: 12%; border-bottom: black 1pt solid; padding-right: 14.8pt; padding-left: 8.8pt; line-height: 96%; text-align: right; text-indent: 4.2pt"><FONT STYLE="font-size: 7pt; line-height: 96%"><B>Capital Reserves, Options Granted, and Treasury Shares</B></FONT></TD>
    <TD STYLE="width: 11%; border-bottom: black 1pt solid; padding-right: 11.7pt; line-height: 7.8pt; text-align: right"><FONT STYLE="font-size: 7pt"><B>Profit Reserves</B></FONT></TD>
    <TD STYLE="width: 11%; border-bottom: black 1pt solid">
    <P STYLE="font: 7pt/7.7pt Arial, Helvetica, Sans-Serif; margin: 0 15.8pt 0 0; text-align: right"><B>Retained Earnings/Accumulated</B></P>
    <P STYLE="font: 7pt/7.95pt Arial, Helvetica, Sans-Serif; margin: 0 13.85pt 0 0; text-align: right"><B>Losses</B></P></TD>
    <TD STYLE="width: 11%; border-bottom: black 1pt solid">
    <P STYLE="font: 7pt/7.7pt Arial, Helvetica, Sans-Serif; margin: 0 16.2pt 0 0; text-align: right"><B>Other Comprehensive</B></P>
    <P STYLE="font: 7pt/7.95pt Arial, Helvetica, Sans-Serif; margin: 0 14.2pt 0 0; text-align: right"><B>Income</B></P></TD>
    <TD STYLE="width: 10%; border-bottom: black 1pt solid; padding-right: 1.95pt; line-height: 7.8pt; text-align: right"><FONT STYLE="font-size: 7pt"><B>Equity</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.01</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Opening Balances</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.8pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 11.75pt; text-align: right"><FONT STYLE="font-size: 7pt">9,885,485</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 13.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">46,374</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 7pt">24,931,859</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.03</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Restated Opening Balances</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.8pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.75pt; text-align: right"><FONT STYLE="font-size: 7pt">9,885,485</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">46,374</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 7pt">24,931,859</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.04</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Capital Transactions with Partners</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 7pt">-55,630</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 7pt">-55,630</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.9pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.04.08</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Additional Minimum Dividends, approved</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 7pt">-55,630</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 13.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 7pt">-55,630</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.05</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Total Comprehensive Income</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.9pt; text-align: right"><FONT STYLE="font-size: 7pt">2,479,057</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 7pt">2,479,057</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 7pt">5.05.01</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Net Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.9pt; text-align: right"><FONT STYLE="font-size: 7pt">2,479,057</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 7pt">2,479,057</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.95pt; padding-left: 2pt; line-height: 7.05pt; text-align: left"><FONT STYLE="font-size: 7pt">5.07</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-left: 5.95pt; line-height: 7.05pt; text-align: left"><FONT STYLE="font-size: 7pt">Closing Balances</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 8.8pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.85pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.75pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">9,829,855</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.9pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">2,479,057</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.2pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">46,374</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 2pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">27,355,286</FONT></TD></TR>
  </TABLE>

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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->11<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Parent Company&rsquo;s Financial Statements
/ Statement of Value Added</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 9%; padding-right: 7.45pt; padding-left: 2pt; line-height: 10pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 46%; padding-left: 7.75pt; line-height: 10.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 24%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 8.3pt 0 0; text-align: right"><B>YTD Current</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 5.8pt 0 0; text-align: right"><B>Year</B></P></TD>
    <TD STYLE="width: 21%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 4.5pt 0 0; text-align: right"><B>YTD Previous</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 2.05pt 0 0; text-align: right"><B>Year</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 5.8pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 2.1pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Revenue</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">18,983,816</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">16,639,519</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Goods, Products, and Services Sold</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">15,640,913</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">13,762,081</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Revenue</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">104,218</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">50,704</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Revenue from Construction of Own Assets</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">3,775,580</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">3,393,182</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Allowance for/Reversal of Doubtful Accounts</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-536,895</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">-566,448</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Inputs Acquired from Third Parties</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-7,987,027</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-7,306,373</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Costs of Goods, Products and Services Sold</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-6,759,123</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-6,194,022</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Materials, Electricity, Outsourced Services, and Others</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,205,811</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,068,495</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-22,093</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-43,856</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Gross Value Added</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">10,996,789</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">9,333,146</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Retentions</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,041,377</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,801,622</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Depreciation, Amortization, and Depletion</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,041,377</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,801,622</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Value Added Produced</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">8,955,412</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">7,531,524</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Value Added Received in Transfer</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">657,118</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">994,310</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.06.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Pickup</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">21,016</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">17,448</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.06.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Revenue</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">636,102</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">976,862</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.07</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Total Value Added to Distribute</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">9,612,530</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">8,525,834</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Value Added Distribution</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">9,612,530</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">8,525,834</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Personnel</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,637,113</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">1,958,612</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Direct Compensation</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,969,093</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">1,406,624</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Benefits</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">531,253</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">441,724</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Government Severance Indemnity Fund for Employees (FGTS)</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">136,767</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">110,264</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Taxes, Fees, and Contributions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,812,117</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">2,820,420</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Federal</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,631,548</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">2,649,229</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">State</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">129,448</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">123,247</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Municipal</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">51,121</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">47,944</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Value Distributed to Providers of Capital</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,826,050</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">1,267,745</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,808,503</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">1,249,743</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.03.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Rentals</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">17,547</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">18,002</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Value Distributed to Shareholders</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">2,479,057</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.04.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Retained Earnings/Accumulated Losses for the Period</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">2,479,057</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 14 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->12<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Consolidated Financial Statements / Statement
of Financial Position - Assets</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 10%; padding-left: 2pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 50%; padding-left: 2.25pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%; padding-right: 20.65pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 18%; padding-right: 1.85pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Previous Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding-left: 2pt; line-height: 10.05pt; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 20.65pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.9pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>12/31/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Total Assets</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">59,054,629</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Current Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">7,120,730</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Cash and Cash Equivalents</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">1,593,701</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Investments</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">1,381,568</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Investments Valued at Amortized Cost</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">1,381,568</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Accounts Receivable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">3,626,628</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Trade Payables</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">3,393,831</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.03.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Receivables</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">232,797</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.03.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Related-Party Balances</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">232,797</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Inventories</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">120,608</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.06</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Recoverable Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">262,743</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.06.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Current Recoverable Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">262,743</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.08</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Current Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">135,482</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.08.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">135,482</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.08.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Restricted Cash</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">53,736</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.01.08.03.20</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">81,746</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Noncurrent Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">51,933,899</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Long-Term Assets</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">9,338,970</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Accounts Receivable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">214,526</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Customers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">214,526</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.09</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Receivables from Related Parties</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">941,047</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.09.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Receivables from Controlling Shareholders</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">941,047</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Noncurrent Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">8,183,397</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Escrow Deposits</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">130,795</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Water and Basic Sanitation National Agency &ndash; ANA</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">3,463</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Contract Asset </FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">7,889,956</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.01.10.20</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">159,183</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Investments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">203,057</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Interest</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">156,367</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Interest in Jointly-Owned Subsidiaries</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">124,120</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02.01.05</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Investments</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">32,247</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Investment Properties</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">46,690</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Property, Plant and Equipment</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">418,424</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Intangible Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">41,973,448</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Intangible Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">41,973,448</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Concession Agreements</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">1,271,288</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Program Contracts</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">20,906,853</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Service Contracts</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">19,126,055</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Software License of Use</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">532,131</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">1.02.04.01.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Right of Use</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">137,121</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 15 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->13<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Consolidated Financial Statements / Statement
of Financial Position - Liabilities</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 10%; padding-left: 2pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 50%; padding-left: 2.25pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%; padding-right: 20.6pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 18%; padding-right: 1.8pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Previous Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding-left: 2pt; line-height: 10.05pt; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 20.6pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.85pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>12/31/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Total Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">59,054,629</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Current Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">7,133,252</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Social and Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">909,606</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Social Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">37,023</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">872,583</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Suppliers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">518,199</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Domestic Suppliers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">518,199</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">310,157</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Federal Tax Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">304,022</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Income Tax and Social Contribution Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">108,272</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Pis-Pasep and Cofins Payable</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">115,377</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">INSS (Social Security Contribution) Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">44,393</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.01.20</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Federal Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">35,980</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.03.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Municipal Tax Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">6,135</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,652,150</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,221,385</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">In Local Currency</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">976,719</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">In Foreign Currency</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">244,666</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Debentures</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,309,459</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.04.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Financing through Lease</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">121,306</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,728,647</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Payables to Related Parties</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,871</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Payables to Controlling Shareholders</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,871</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,726,776</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Dividends and Interest on Capital Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">553</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Services Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">756,547</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Refundable Amounts</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">28,481</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Program Contract Commitments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">26,379</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.07</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">239,831</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.09</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Indemnities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">9,201</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.05.02.20</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">665,784</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,014,493</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax, Social Security, Labor, and Civil Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">644,973</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">37,679</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan and Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">503,324</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Civil Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">103,970</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">369,520</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Environmental Liabilities and Decommissioning</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">20,537</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Customers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">157,677</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.01.06.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Suppliers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">191,306</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Noncurrent Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">22,327,521</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">16,350,740</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">9,638,484</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">In Local Currency</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">7,399,232</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">In Foreign Currency</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,239,252</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Debentures</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">6,351,631</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 16 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->14<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Consolidated Financial Statements / Statement
of Financial Position - Liabilities</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 10%; padding-left: 2pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 50%; padding-left: 2.25pt; line-height: 9.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%; padding-right: 20.6pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 18%; padding-right: 1.8pt; line-height: 9.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>Previous Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; padding-left: 2pt; line-height: 10.05pt; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 20.6pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.85pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>12/31/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Financing through Lease</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">360,625</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">5,201,515</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">5,201,515</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,126,918</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Program Contract Commitments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">11,851</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,583,118</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.07</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Indemnities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">14,438</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.08</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">100,542</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.09</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Cofins/Pasep</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">159,937</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.02.02.20</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">204,711</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">72,125</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Income Tax and Social Contribution</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">72,125</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.03.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Income Tax and Social Contribution</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">72,125</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">703,141</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax, Social Security, Labor, and Civil Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">199,380</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Tax Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">44,660</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan and Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">148,253</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Civil Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">6,467</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">503,761</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Environmental Liabilities and Decommissioning</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">453,877</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Customers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">5,092</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.02.04.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions for Suppliers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">44,792</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Consolidated Equity</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">29,593,856</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Paid-Up Capital</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Profit Reserves</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">12,078,963</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Legal Reserve</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,688,428</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.04.10</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Reserve for Investments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">10,390,535</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; text-align: left"><FONT STYLE="font-size: 9pt">Retained Earnings/Accumulated Losses</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">2.03.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 2.25pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Valuation Adjustments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.85pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 17 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->15<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Consolidated Financial Statements / Income
Statement</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; padding-left: 2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 37%; padding-left: 8.2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 20%; padding-right: 8.1pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 13%; padding-right: 10.3pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Current</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 6.85pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Same Quarter of the</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 3.7pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Previous</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 2pt; line-height: 8pt; text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="padding-right: 8.1pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="padding-right: 8.05pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD>
    <TD STYLE="padding-right: 4.65pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Previous Year</B></FONT></TD>
    <TD STYLE="padding-right: 1.5pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 8.05pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 4.65pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2022 to 09/30/2022</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.5pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.01</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Revenue from Sales and/or Services</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">6,453,246</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">18,306,152</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Cost of Sales and/or Services</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-3,944,519</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-11,808,917</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.02.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Cost of Sales and/or Services</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-2,641,363</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-8,117,914</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.02.02</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Construction Costs</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,303,156</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-3,691,003</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.03</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Gross Profit</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">2,508,727</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">6,497,235</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Operating Expenses/Income</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-800,082</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-2,325,236</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Selling Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-393,738</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,284,863</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.01.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Selling Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-237,074</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-747,968</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.01.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Allowance for Doubtful Accounts</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-156,664</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-536,895</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">General and Administrative Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-419,083</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,134,613</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.04</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Other Operating Income</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">14,281</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">93,241</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.04.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Other Operating Income</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">16,610</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">104,218</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.04.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Cofins and Pasep</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-2,329</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-10,977</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.05</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Other Operating Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-8.253</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-22,093</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.04.06</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Equity Pickup</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">6,711</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">23,092</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.05</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Income before Financial Result and Taxes</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">1,708,645</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">4,171,999</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Result</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-430,996</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-704,572</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.01</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Revenue</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">180,024</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">604,316</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.01.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Revenue</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">188,680</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">633,117</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.01.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Exchange Variation Gains</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">338</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">909</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.01.03</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Cofins and Pasep</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-8.994</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-29,710</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-611,020</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,308,888</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.02.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Financial Expenses</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-561,101</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,606,501</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.06.02.02</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Exchange Variation Losses</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">-49,919</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">297,613</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.07</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Profit before Taxes on Income</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">1,277,649</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">3,467,427</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.08</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Income Tax and Social Contribution</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-431,354</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,130,177</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.08.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Current</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">-461,143</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.05pt; text-align: right"><FONT STYLE="font-size: 8pt">-1,247,330</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.08.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Deferred</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">29,789</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">117,153</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.65pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.5pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 18 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->16<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Consolidated Financial Statements / Income
Statement</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; padding-left: 2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 35%; padding-left: 8.2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%; padding-right: 8.2pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 13%; padding-right: 10.5pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Current</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 7.15pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Same Quarter of the</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 4.1pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Previous</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 2pt; line-height: 8pt; text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="padding-right: 8.2pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="padding-right: 8.25pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD>
    <TD STYLE="padding-right: 4.95pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Previous Year</B></FONT></TD>
    <TD STYLE="padding-right: 1.9pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 8.25pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 4.95pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2022 to 09/30/2022</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.9pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.09</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Net Income from Continuing Operations</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">846,295</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 4.95pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3,11</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Consolidated Profit/Loss for the Period</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">846,295</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.95pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Earnings per Share - (Reais/Share)</FONT></TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.3pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99.01</FONT></TD>
    <TD STYLE="padding-top: 2.3pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Basic Earnings per Share</FONT></TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99.01.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Common </FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.25pt; text-align: right"><FONT STYLE="font-size: 8pt">1.23816</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.3pt; text-align: right"><FONT STYLE="font-size: 8pt">3.41948</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.95pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99.02</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Diluted Earnings per Share</FONT></TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">3.99.02.01</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Common </FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.25pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">1.23816</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.3pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">3.41948</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.95pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.9pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 19 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->17<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Consolidated Financial Statements / Statement
of Comprehensive Income</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 6%; padding-left: 2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 35%; padding-left: 8.2pt; line-height: 7.95pt; text-align: left"><FONT STYLE="font-size: 8pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%; padding-right: 8.1pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Current Quarter</B></FONT></TD>
    <TD STYLE="width: 13%; padding-right: 10.35pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Current</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 6.95pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Same Quarter of the</B></FONT></TD>
    <TD STYLE="width: 12%; padding-right: 3.85pt; line-height: 7.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>YTD Previous</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 2pt; line-height: 8pt; text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="padding-right: 8.1pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="padding-right: 8.1pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD>
    <TD STYLE="padding-right: 4.75pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Previous Year</B></FONT></TD>
    <TD STYLE="padding-right: 1.65pt; line-height: 8pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>Year</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 8.1pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 4.75pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>07/01/2022 to 09/30/2022</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 1.65pt; line-height: 8.95pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 8pt">4.01</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-left: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Consolidated Net Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.15pt; text-align: right"><FONT STYLE="font-size: 8pt">846,295</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 8.1pt; text-align: right"><FONT STYLE="font-size: 8pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 4.75pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.65pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 2.35pt; padding-left: 2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">4.03</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-left: 8.2pt; line-height: 8.2pt; text-align: left"><FONT STYLE="font-size: 8pt">Consolidated Comprehensive Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.15pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">846,295</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 8.1pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 4.75pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.35pt; padding-right: 1.65pt; line-height: 8.2pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  </TABLE>

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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->18<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Consolidated Financial Statements / Statement
of Cash Flows &ndash; Indirect Method</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 9%; padding-right: 7.45pt; padding-left: 2pt; line-height: 10pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 49%; padding-left: 7.75pt; line-height: 10.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 21%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 8.25pt 0 0; text-align: right"><B>YTD Current</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 5.75pt 0 0; text-align: right"><B>Year</B></P></TD>
    <TD STYLE="width: 21%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 4.4pt 0 0; text-align: right"><B>YTD Previous</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 1.95pt 0 0; text-align: right"><B>Year</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 5.75pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 2pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Cash from Operating Activities</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">3,145,077</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Cash from Operations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">7,999,470</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Profit before Income Tax and Social Contribution</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">3,467,427</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Provision and Inflation Adjustments on Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">331,157</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Finance Charges from Customers</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-285,514</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.05</FONT></TD>
    <TD STYLE="padding-top: 2pt; padding-right: 11pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Residual Value of Property, Plant and Equipment, Intangible Assets, and Investment Properties Written-off</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">7,241</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.06</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Depreciation and Amortization</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">2,041,377</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.07</FONT></TD>
    <TD STYLE="padding-top: 2pt; padding-right: 11pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Interest on Borrowings and Financing Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">960,460</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.65pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.08</FONT></TD>
    <TD STYLE="padding-top: 1.9pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Inflation Adjustment and Exchange Gains (Losses) on Borrowings and Financing</FONT></TD>
    <TD STYLE="padding-top: 1.65pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-174,497</FONT></TD>
    <TD STYLE="padding-top: 1.65pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.09</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest and Inflation Adjustments on Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">13,976</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.10</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest and Inflation Adjustments on Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-88,031</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.11</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Allowance for Doubtful Accounts</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">536,895</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.12</FONT></TD>
    <TD STYLE="padding-top: 2pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Provision for Consent Decree (TAC) and Knowledge Retention Program (KRP)</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">571,275</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.13</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Pickup</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-23,092</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.14</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest and Inflation Adjustment PPP</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">366,143</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.15</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Adjustments</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">17,629</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.16</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Transfer to the S&atilde;o Paulo Municipal Government</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">185,838</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.17</FONT></TD>
    <TD STYLE="padding-top: 2pt; padding-right: 3.5pt; padding-left: 7.75pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 9pt; line-height: 96%">Construction Margin on Intangible Assets Arising from Concession Agreements</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-84,577</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.01.18</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">155,763</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Changes in Assets and Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,315,006</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Assets</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-563,914</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Related-Party Balances and Transactions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">8,325</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Inventories</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">3,639</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Taxes Recoverable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-19,836</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Receivables</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-17,660</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Escrow Deposits</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">48,850</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.08</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Trade Payables and Contractors</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-409,644</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.09</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Social and Labor Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-30,917</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.10</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Pension Plan Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-179,036</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.11</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Taxes and Contributions Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-168,118</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.12</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Services Payable</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-152,533</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.13</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-610,069</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.14</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Provisions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-224,307</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.02.15</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred Cofins/Pasep</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">214</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,539,387</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest Paid</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,476,871</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.01.03.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Income Tax and Social Contribution Paid</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,062,516</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Cash from Investing Activities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,132,331</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Acquisition of Contract Assets and Intangible Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,357,493</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Acquisition of Property, Plant and Equipment</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-88,242</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Investments</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,676</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Restricted Cash</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">-16,262</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 21 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->19<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>Consolidated Financial Statements / Statement
of Cash Flows &ndash; Indirect Method</B></P>

<P STYLE="font: 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 4.1pt; margin-bottom: 0pt"><B>(R$ thousand)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 9%; padding-right: 7.45pt; padding-left: 2pt; line-height: 10pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 43%; padding-left: 7.75pt; line-height: 10.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 27%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 8.3pt 0 0; text-align: right"><B>YTD Current</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 5.8pt 0 0; text-align: right"><B>Year</B></P></TD>
    <TD STYLE="width: 21%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 4.45pt 0 0; text-align: right"><B>YTD Previous</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 2pt 0 0; text-align: right"><B>Year</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 5.8pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 2.05pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.02.07</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Investments</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">331,342</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Cash from Financing Activities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,286,530</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Funding</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,391,821</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Amortization</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,276,199</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Payment of Interest on Capital</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-823,671</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-502,375</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Program Contract Commitments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-76,917</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Capital Increase</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">811</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Increase (Decrease) in Cash and Cash Equivalents</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-273,784</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.05.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Opening Balance of Cash and Cash Equivalents</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,867,485</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">6.05.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Closing Balance of Cash and Cash Equivalents</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">1,593,701</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 22 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->20<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 0pt; margin-bottom: 0pt">Consolidated Financial Statements / Statement
of Changes in Equity - 01/01/2023 to 09/30/2023</P>

<P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 0pt; margin-bottom: 0pt">(R$ thousand)</P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 3.85pt 0 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 4%; border-bottom: black 1pt solid; padding-right: 4.6pt; padding-left: 2pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 6pt; line-height: 96%"><B>Code</B></FONT></TD>
    <TD STYLE="width: 21%; border-bottom: black 1pt solid; padding-left: 5.15pt; line-height: 6.7pt; text-align: left"><FONT STYLE="font-size: 6pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 9%; border-bottom: black 1pt solid; padding-left: 28.55pt; line-height: 96%; text-align: left; text-indent: -4.05pt"><FONT STYLE="font-size: 6pt; line-height: 96%"><B>Paid-up Capital</B></FONT></TD>
    <TD STYLE="width: 10%; border-bottom: black 1pt solid; padding-right: 12.6pt; padding-left: 7.75pt; line-height: 96%; text-align: justify; text-indent: 3.65pt"><FONT STYLE="font-size: 6pt; line-height: 96%"><B>Capital Reserves, Options Granted, and Treasury Shares</B></FONT></TD>
    <TD STYLE="width: 9%; border-bottom: black 1pt solid; padding-right: 9.9pt; line-height: 6.7pt; text-align: right"><FONT STYLE="font-size: 6pt"><B>Profit Reserves</B></FONT></TD>
    <TD STYLE="width: 10%; border-bottom: black 1pt solid">
    <P STYLE="font: 6pt/6.6pt Arial, Helvetica, Sans-Serif; margin: 0 13.4pt 0 0; text-align: right"><B>Retained Earnings/Accumulated</B></P>
    <P STYLE="font: 6pt/6.8pt Arial, Helvetica, Sans-Serif; margin: 0 11.7pt 0 0; text-align: right"><B>Losses</B></P></TD>
    <TD STYLE="width: 10%; border-bottom: black 1pt solid">
    <P STYLE="font: 6pt/6.6pt Arial, Helvetica, Sans-Serif; margin: 0 13.75pt 0 0; text-align: right"><B>Other Comprehensive</B></P>
    <P STYLE="font: 6pt/6.8pt Arial, Helvetica, Sans-Serif; margin: 0 12.05pt 0 0; text-align: right"><B>Income</B></P></TD>
    <TD STYLE="width: 9%; border-bottom: black 1pt solid; padding-right: 7.95pt; line-height: 6.7pt; text-align: right"><FONT STYLE="font-size: 6pt"><B>Equity</B></FONT></TD>
    <TD STYLE="width: 10%; border-bottom: black 1pt solid">
    <P STYLE="font: 6pt/6.6pt Arial, Helvetica, Sans-Serif; margin: 0 12.8pt 0 0; text-align: right"><B>Non-Controlling</B></P>
    <P STYLE="font: 6pt/6.8pt Arial, Helvetica, Sans-Serif; margin: 0 11.05pt 0 0; text-align: right"><B>Interests</B></P></TD>
    <TD STYLE="width: 8%; border-bottom: black 1pt solid">
    <P STYLE="font: 6pt/6.6pt Arial, Helvetica, Sans-Serif; margin: 0 3.15pt 0 0; text-align: right"><B>Equity</B></P>
    <P STYLE="font: 6pt/6.8pt Arial, Helvetica, Sans-Serif; margin: 0 1.55pt 0 0; text-align: right"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.25pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 6pt">5.01</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-left: 5.15pt; text-align: left"><FONT STYLE="font-size: 6pt">Opening Balances</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 7.45pt; text-align: right"><FONT STYLE="font-size: 6pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 12.6pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 9.9pt; text-align: right"><FONT STYLE="font-size: 6pt">12,155,890</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 12.05pt; text-align: right"><FONT STYLE="font-size: 6pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 7.95pt; text-align: right"><FONT STYLE="font-size: 6pt">27,333,533</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 11.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 6pt">27,333,533</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 3.55pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 6pt">5.03</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-left: 5.15pt; text-align: left"><FONT STYLE="font-size: 6pt">Restated Opening Balances</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 7.45pt; text-align: right"><FONT STYLE="font-size: 6pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 12.6pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 9.9pt; text-align: right"><FONT STYLE="font-size: 6pt">12,155,890</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 12.05pt; text-align: right"><FONT STYLE="font-size: 6pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 7.95pt; text-align: right"><FONT STYLE="font-size: 6pt">27,333,533</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 11.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 6pt">27,333,533</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 3.55pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 6pt">5.04</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-left: 5.15pt; text-align: left"><FONT STYLE="font-size: 6pt">Capital Transactions with Partners</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 7.45pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 12.6pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 9.9pt; text-align: right"><FONT STYLE="font-size: 6pt">-76,927</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 12.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 7.95pt; text-align: right"><FONT STYLE="font-size: 6pt">-76,927</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 11.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 1.55pt; text-align: right"><FONT STYLE="font-size: 6pt">-76,927</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 3.5pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 6pt">5.04.08</FONT></TD>
    <TD STYLE="padding-top: 3.65pt; padding-left: 5.15pt; line-height: 96%; text-align: left"><FONT STYLE="font-size: 6pt; line-height: 96%">Additional Minimum Dividends, approved</FONT></TD>
    <TD STYLE="padding-top: 3.5pt; padding-right: 7.45pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.5pt; padding-right: 12.6pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.5pt; padding-right: 9.9pt; text-align: right"><FONT STYLE="font-size: 6pt">-76,927</FONT></TD>
    <TD STYLE="padding-top: 3.5pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.5pt; padding-right: 12.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.5pt; padding-right: 7.95pt; text-align: right"><FONT STYLE="font-size: 6pt">-76,927</FONT></TD>
    <TD STYLE="padding-top: 3.5pt; padding-right: 11.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.5pt; padding-right: 1.55pt; text-align: right"><FONT STYLE="font-size: 6pt">-76,927</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.8pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 6pt">5.05</FONT></TD>
    <TD STYLE="padding-top: 1.8pt; padding-left: 5.15pt; text-align: left"><FONT STYLE="font-size: 6pt">Total Comprehensive Income</FONT></TD>
    <TD STYLE="padding-top: 1.8pt; padding-right: 7.45pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.8pt; padding-right: 12.6pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.8pt; padding-right: 9.85pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.8pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 6pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.8pt; padding-right: 12.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.8pt; padding-right: 7.95pt; text-align: right"><FONT STYLE="font-size: 6pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.8pt; padding-right: 11.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.8pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 6pt">2,337,250</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 3.55pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 6pt">5.05.01</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-left: 5.15pt; text-align: left"><FONT STYLE="font-size: 6pt">Net Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 7.45pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 12.6pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 9.85pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 11.7pt; text-align: right"><FONT STYLE="font-size: 6pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 12.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 7.95pt; text-align: right"><FONT STYLE="font-size: 6pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 11.05pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 1.5pt; text-align: right"><FONT STYLE="font-size: 6pt">2,337,250</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 3.55pt; padding-left: 2pt; line-height: 5.9pt; text-align: left"><FONT STYLE="font-size: 6pt">5.07</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-left: 5.15pt; line-height: 5.9pt; text-align: left"><FONT STYLE="font-size: 6pt">Closing Balances</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 7.45pt; line-height: 5.9pt; text-align: right"><FONT STYLE="font-size: 6pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 12.6pt; line-height: 5.9pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 9.9pt; line-height: 5.9pt; text-align: right"><FONT STYLE="font-size: 6pt">12,078,963</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 11.7pt; line-height: 5.9pt; text-align: right"><FONT STYLE="font-size: 6pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 12.05pt; line-height: 5.9pt; text-align: right"><FONT STYLE="font-size: 6pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 7.95pt; line-height: 5.9pt; text-align: right"><FONT STYLE="font-size: 6pt">29,593,856</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 11.05pt; line-height: 5.9pt; text-align: right"><FONT STYLE="font-size: 6pt">0</FONT></TD>
    <TD STYLE="padding-top: 3.55pt; padding-right: 1.5pt; line-height: 5.9pt; text-align: right"><FONT STYLE="font-size: 6pt">29,593,856</FONT></TD></TR>
  </TABLE>




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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 0pt; margin-bottom: 0pt">Consolidated Financial Statements / Statement
of Value Added</P>

<P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; margin-top: 0pt; margin-bottom: 0pt">(R$ thousand)&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 9%; padding-right: 7.45pt; padding-left: 2pt; line-height: 10pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Code</B></FONT></TD>
    <TD STYLE="width: 46%; padding-left: 7.75pt; line-height: 10.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 24%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 8.3pt 0 0; text-align: right"><B>YTD Current</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 5.8pt 0 0; text-align: right"><B>Year</B></P></TD>
    <TD STYLE="width: 21%">
    <P STYLE="font: 9pt/9.9pt Arial, Helvetica, Sans-Serif; margin: 0 4.5pt 0 0; text-align: right"><B>YTD Previous</B></P>
    <P STYLE="font: 9pt/9.15pt Arial, Helvetica, Sans-Serif; margin: 0 2.05pt 0 0; text-align: right"><B>Year</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 5.8pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2023 to 09/30/2023</B></FONT></TD>
    <TD STYLE="border-bottom: black 1pt solid; padding-right: 2.1pt; line-height: 10.05pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>01/01/2022 to 09/30/2022</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.2pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Revenue</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">18,983,816</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Goods, Products, and Services Sold</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">15,640,913</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Revenue</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">104,218</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Revenue from Construction of Own Assets</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">3,775,580</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.01.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Allowance for/Reversal of Doubtful Accounts</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-536,895</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Inputs Acquired from Third Parties</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-7,987,027</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Costs of Goods, Products and Services Sold</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-6,759,123</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Materials, Electricity, Outsourced Services, and Others</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,205,811</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-22,093</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Gross Value Added</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">10,996,789</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Retentions</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,041,377</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Depreciation, Amortization, and Depletion</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,041,377</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Value Added Produced</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">8,955,412</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Value Added Received in Transfer</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">657,118</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.06.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Pickup</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">23,092</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.06.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Revenue</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">634,026</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.07</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Total Value Added to Distribute</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">9,612,530</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Distribution of Value Added</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">9,612,530</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Personnel</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,637,113</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Direct Compensation</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,969,093</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Benefits</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">531,253</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Government Severance Indemnity Fund for Employees (FGTS)</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">136,767</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Taxes, Fees, and Contributions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,812,117</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Federal</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,631,548</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">State</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">129,448</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.02.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Municipal</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">51,121</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Value Distributed to Providers of Capital</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,826,050</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.03.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Interest</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">1,808,503</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.03.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Rentals</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">17,547</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Value Distributed to Shareholders</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.1pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.7pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">7.08.04.03</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Retained Earnings/Accumulated Losses for the Period</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.8pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">2,337,250</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.1pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">0</FONT></TD></TR>
  </TABLE>




<!-- Field: Page; Sequence: 24; Options: NewSection; Value: 22 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->22<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 14pt/200% Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; color: navy"><B>Highlights</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">Adjusted EBITDA totaled R$
2,414.0 million in 3Q23, up by R$ 277.8 million (+13.0%) over the R$ 2,136.2 million reported in 3Q22. Consequently, the adjusted EBITDA
margin reached 37.4% compared to 35.7% in 3Q22, and the adjusted EBITDA margin (excluding the construction revenue) reached 47.1% compared
to the 46.1% reported in 3Q22.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">The consolidated net income
came to R$ 846.3 million in 3Q23, down by R$ 234.8 million (-21.7%).</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify"><B>Water supply and sanitation
services in the Municipality of Est&acirc;ncia Tur&iacute;stica de Ol&iacute;mpia</B></P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">On October 11, 2023, the Concession
Contract for the Provision of Public Water Supply and Sanitation Services in the Municipality of Ol&iacute;mpia was signed after the creation
of SPE SABESP Ol&iacute;mpia S/A. As of this date, a 60-day period has commenced during which the operation is being carried out by the
Water and Sewage Department of the Municipality of Ol&iacute;mpia (DAEMO), assisted by the SPE. After this period, the entire operation
will be carried out by the SPE, marking the beginning of the Concession period.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">There were no impacts on the
results for 3Q23.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify"><B>Revenue from sanitation
services</B></P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">Increase of R$ 527.0 million
(+10.5%), impacted by (i) a 9.6% tariff adjustment implemented since May 2023; (ii) a 3.5% increase in total billed volume; and (iii)
a higher average tariff due to the increase in ranges with higher consumption in the residential category.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify; color: red">&nbsp;</P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify"><B>Impacts from the exchange
variation</B></P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">In 3Q23, there was a negative
exchange variation, with a YoY impact of R$ 77.2 million, due to the appreciation of the U.S. Dollar and the Yen in 3Q23, compared to
the appreciation of the U.S. Dollar and the depreciation of the Yen in 3Q22, as shown below:</P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 28.35pt 0 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 70%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 16%; border: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; background-color: #95B3D7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>3Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 14%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; background-color: #95B3D7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>3Q22</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Foreign currency debt - R$ million</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,483.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,617.6</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Foreign currency debt as a percentage of total debt </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">13.1%</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">14.0%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">U.S. dollar variation in the quarter </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3.9%</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3.2%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Yen variation in the quarter</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0.5%</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-3.2%</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 8pt/12pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><I>&nbsp;</I></P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 9.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/200% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 24.55pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-size: 14pt; color: #000099"><B>1.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-size: 14pt; color: navy"><B>Result for the period</B></FONT></TD></TR></TABLE>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="9" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;R$ million</I></B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; border-right: black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>Var.</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; border-right: black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>Var.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; width: 38%; border-left: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 9%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>3Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>3Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>%</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>9M23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 9%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>9M22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 7%; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 6%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Revenue from sanitation services</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">5,539.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">5,012.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">527.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">10.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">15,640.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">13,762.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,878.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">13.7</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;COFINS and PASEP/TRCF taxes</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(418.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(374.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(44.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">11.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1,110.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1,031.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(78.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">7.6</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: white">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt"><B>(=) Revenue from sanitation services, net</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>5,120.5</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>4,637.5</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>483.0</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>10.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>14,530.6</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>12,730.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,800.2</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>14.1</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Construction revenue</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,332.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,350.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(17.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3,775.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3,393.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">382.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">11.3</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: white">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt"><B>(=) Net operating income</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>6,453.3</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>5,987.7</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>465.6</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>7.8</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>18,306.2</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>16,123.6</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,182.6</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>13.5</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Construction costs</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1,303.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1,319.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">16.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(3,691.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(3,316.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(374.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">11.3</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Costs and expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(3,454.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(3,151.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(302.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">9.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(10,537.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(9,258.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1,279.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">13.8</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other operating income (expenses), net</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">6.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(2.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">8.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(322.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">71.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">69.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3,285.7</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Equity pickup</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">4.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">6.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(23.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">21.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">17.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">20.7</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt"><B>(=) Earnings before financial result, income tax, and social contribution</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,706.5</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,519.8</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>186.7</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>12.3</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>4,169.9</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>3,567.9</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>602.0</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>16.9</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Financial result</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(428.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">118.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(547.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(461.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(702.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">134.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(836.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(623.1)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt"><B>(=) Earnings before income tax and social contribution</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,277.6</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,638.3</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(360.7)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(22.0)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>3,467.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>3,702.2</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(234.8)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(6.3)</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income tax and social contribution</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(431.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(557.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">125.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(22.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1,130.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(1,223.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">92.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(7.6)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt"><B>(=) Net income</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>846.3</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,081.1</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(234.8)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(21.7)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,337.2</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,479.1</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(141.9)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(5.7)</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Earnings per share (R$)*</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1.24</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1.58</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3.42</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3.63</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 9pt"><I>*</I></FONT><I>
<FONT STYLE="font-size: 7pt">Number of shares = 683,509,869</FONT></I></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; color: navy"><B>Adjusted EBITDA Reconciliation (Non-accounting
measures)</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="9" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;R$ million</I></B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; border-right: black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>Var.</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; border-right: black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>Var.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; width: 40%; border-left: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>3Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>3Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>%</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>9M23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>9M22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 5%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net income</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">846.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,081.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(234.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(21.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,337.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,479.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(141.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(5.7)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IDP</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">529.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">529.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt; color: black"><B>(=) Adjusted Net Income (excluding the IDP)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>846.3</B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,081.1</B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(234.8)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>(21.7)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,866.8</B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,479.1</B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>387.7</B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>15.6</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income tax and social contribution</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">431.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">557.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(125.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(22.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,130.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,223.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(92.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(7.6)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Financial result</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">428.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(118.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">547.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(461.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">702.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(134.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">836.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(623.1)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other operating income (expenses), net</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(6.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(8.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(322.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(71.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(2.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(69.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3,285.7</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Depreciation and amortization</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">713.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">613.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">99.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">16.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,041.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,801.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">239.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">13.3</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt"><B>(=) Adjusted EBITDA (excluding the IDP)**</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,414.0</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,136.2</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>277.8</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>13.0</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>6,669.8</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>5,367.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,302.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>24.3</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(%) Adjusted EBITDA margin (excluding the IDP)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt; color: black">37.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt; color: black">35.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt; color: black">36.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt; color: black">33.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(%) Adjusted EBITDA margin (excluding the IDP) on Net Revenue, excluding Construction</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt; color: black">47.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt; color: black">46.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt; color: black">45.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt; color: black">42.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 113.4pt 0 0; text-transform: uppercase; text-align: justify; text-indent: -7.1pt"><I>*
<FONT STYLE="text-transform: none">Incentivized Dismissal Program</FONT></I></P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 113.4pt 0 0; text-transform: uppercase; text-align: justify; text-indent: -7.1pt"><I>**
<FONT STYLE="text-transform: none">Adjusted EBITDA corresponds to income before: (i) other operating income (expenses), net; (ii) financial
result; (iii) income tax and social contribution; and (iv) depreciation and amortization expenses; and (v) incentivized dismissal program.</FONT></I></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: red">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: red">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">The net operating income,
which includes construction revenue, totaled R$ 6,453.3 million in 3Q23, an increase of 7.8% over 3Q22.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">Excluding construction costs,
costs and expenses totaled R$ 3,454.2 million, an increase of R$ 302.9 million (+9.6%).</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">The adjusted EBITDA was R$
2,414.0 million in 3Q23 compared to the R$ 2,136.2 reported in 3Q22<BR>
(R$ 7,860.4 million in the last 12 months).</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">The Adjusted EBITDA margin
was 37.4% in 3Q23 compared to the 35.7% reported in 3Q22 (32.4% in the last 12 months).</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">Excluding the effects of revenue
and construction costs, the adjusted EBITDA margin reached 46.6% in 3Q23, compared to 45.4% in 3Q22 (40.8% in the last 12 months).</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">The Company recorded a net
income of R$ 846.3 million in 3Q23, compared to R$ 1,081.1 million in 3Q22.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 28.35pt; text-align: justify">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/200% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 24.55pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-size: 14pt; color: #000099"><B>2.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-size: 14pt; color: navy"><B>Revenue from sanitation services</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 42.55pt; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">The gross operating revenue
from sanitation services, which excludes construction revenue, totaled R$ 5,539.4 million in 3Q23, an increase of R$ 527.0 million (+10.5%)
over the R$ 5,012.4 million recorded in 3Q22.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">The main factors that led
to the increase were:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 20.95pt">Tariff adjustment of 9.6% since May 2023; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 20.95pt">Increase of 3.5% in the total billed volume.</TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 42.55pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 28.35pt; text-align: justify">Revenue from sanitation services
grew by R$ 1,878.8 million (+13.7%) in 9M23, moving up from R$ 13,762.1 million in 2022 to R$ 15,640.9 million in 9M23, mainly due to:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 20.95pt">Tariff adjustment of 12.8% since May 2022;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 20.95pt">Tariff adjustment of 9.6% since May 2023; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 20.95pt">An increase of 2.4% in the total billed volume.</TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 6pt 42.55pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/200% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 24.55pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-size: 14pt; color: #000099"><B>3.</B></FONT></TD><TD STYLE="text-align: justify; padding-right: 20.95pt"><FONT STYLE="font-size: 14pt; color: navy"><B>Construction revenue</B></FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 42.55pt; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">Construction revenue fell by
R$ 17.4 million (-1.3%), due to lower investments made.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 20.95pt 0 28.35pt; text-align: justify">Construction revenue grew by
R$ 382.4 million in 9M23 (+11.3%), as a result of higher investments made in the period.</P>

<P STYLE="font: 14pt/200% Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify"><B>&nbsp;</B></P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 14pt Arial, Helvetica, Sans-Serif; margin: 0; color: red"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/200% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 24.55pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-size: 14pt; color: #000099"><B>4.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-size: 14pt; color: navy"><B>Billed volume</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 21.25pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 28.35pt; text-align: justify">The following tables show the
water and sewage billed volumes, on a quarter-over-quarter and year-over-year basis, per customer category.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top; background-color: #9BC2E6">
    <TD COLSPAN="11" STYLE="border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>WATER AND SEWAGE BILLED VOLUME<SUP>(1)</SUP> PER CUSTOMER CATEGORY &ndash; million m<SUP>3</SUP></B></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Water</B></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Sewage</B></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Water + Sewage</B></TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; width: 31%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><B>Category</B></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>3Q23</B></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>3Q22</B></TD>
    <TD STYLE="width: 7%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Var. %</B></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>3Q23</B></TD>
    <TD STYLE="width: 7%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>3Q22</B></TD>
    <TD STYLE="width: 7%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Var. %</B></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>3Q23</B></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>3Q22</B></TD>
    <TD STYLE="width: 7%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Var. %</B></TD>
    <TD STYLE="width: 1%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Residential</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">477.6</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">462.3</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">3.3</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">420.0</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">405.5</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">3.6</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">897.6</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">867.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">3.4</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Commercial</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">47.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">45.5</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">3.5</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">45.4</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">44.2</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">92.5</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">89.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">3.1</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Industrial</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">9.0</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">8.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2.3</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">9.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">9.6</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">1.0</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">18.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">18.4</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">1.6</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Public</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">12.3</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">11.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">10.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">11.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">10.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">9.9</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">23.4</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">21.2</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">10.4</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><B>Total Retail</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>546.0</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>527.7</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3.5</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>486.2</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>469.4</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3.6</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,032.2</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>997.1</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3.5</B></TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Wholesale <SUP>(2)</SUP></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">11.2</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">11.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">(5.1)</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">5.5</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">4.9</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">12.2</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">16.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">16.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">-</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><B>Overall Total</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>557.2</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>539.5</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3.3</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>491.7</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>474.3</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3.7</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,048.9</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,013.8</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3.5</B></TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Water</B></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Sewage</B></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Water + Sewage</B></TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><B>Category</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>9M23</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>9M22</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Var. %</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>9M23</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>9M22</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Var. %</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>9M23</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>9M22</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #DDEBF7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>Var. %</B></TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Residential</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">1,426.2</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">1,397.6</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2.0</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">1,251.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">1,218.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2,677.3</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2,616.4</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2.3</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Commercial</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">141.2</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">136.5</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">3.4</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">134.6</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">131.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">275.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">268.3</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2.8</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Industrial</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">26.4</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">25.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">2.3</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">28.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">28.4</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">1.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">55.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">54.2</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">1.7</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Public</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">34.6</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">32.4</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">6.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">31.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">28.8</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">8.0</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">65.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">61.2</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">7.4</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><B>Total Retail</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,628.4</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,592.3</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>2.3</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,445.5</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,407.8</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>2.7</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3,073.9</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3,000.1</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>2.5</B></TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify">Wholesale <SUP>(2)</SUP></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">34.9</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">36.0</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">(3.1)</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">16.2</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">14.9</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">8.7</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">51.1</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">50.9</TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">0.4</TD>
    <TD>&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><B>Overall Total</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,663.3</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,628.3</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>2.1</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,461.7</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>1,422.7</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>2.7</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3,125.0</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>3,051.0</B></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: #F2F2F2; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><B>2.4</B></TD>
    <TD>&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify; color: red">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify; color: red">&nbsp;</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0; text-transform: uppercase; text-align: justify"><FONT STYLE="text-transform: none"><I>1
Unaudited by external auditors</I></FONT></P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0; text-transform: uppercase; text-align: justify"><FONT STYLE="text-transform: none"><I>2
Wholesale includes volumes of reuse water and non-domestic sewage</I></FONT></P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0; text-transform: uppercase; text-align: justify"><FONT STYLE="text-transform: none"><I>&nbsp;</I></FONT></P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0"><I>&nbsp;</I></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/200% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 24.55pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-size: 14pt; color: #000099"><B>5.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-size: 14pt; color: navy"><B>Costs, administrative &amp; selling expenses</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 0 28.35pt; text-align: justify">Costs, administrative and selling
expenses increased by R$ 302.9 million in 3Q23 (+9.6%).</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 28.35pt; text-align: justify">Costs, administrative and
selling expenses as a percentage of net revenue (excluding construction revenue) were 67.5% in 3Q23 compared to 68.0% in 3Q22.</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="9" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;R$ million</I></B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; border-right: black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>Var.</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; border-right: black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>Var.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; width: 44%; border-left: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>3Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>3Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 5%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>%</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>9M23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>9M22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 7%; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 4%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Salaries, payroll charges and benefits, and Pension plan obligations</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">800.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">764.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">36.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">4.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,892.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,208.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">683.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">31.0</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">General supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">96.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">107.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(11.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(10.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">274.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">289.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(14.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(5.1)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Treatment supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">113.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">149.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(36.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(24.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">416.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">439.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(23.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(5.2)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Services</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">724.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">635.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">89.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">14.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,992.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,746.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">245.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">14.1</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Electricity</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">368.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">359.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">8.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,150.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,147.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0.3</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">General expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">458.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">361.5</FONT></TD>
    <TD STYLE="white-space: nowrap; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">96.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">26.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,168.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">997.3</FONT></TD>
    <TD STYLE="white-space: nowrap; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">171.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">17.2</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt"><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Share of the municipal government in the collection</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>221.2</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>193.0</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>28.2</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>14.6</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>614.6</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>528.3</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>86.3</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>16.3</I></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt"><I>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other general expenses</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>236.9</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>168.5</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>68.4</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>40.6</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>553.9</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>469.0</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>84.9</I></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><I>18.1</I></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Tax expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">22.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">23.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(0.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(2.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">63.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">61.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">4.4</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Depreciation and amortization</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">713.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">613.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">99.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">16.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,041.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,801.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">239.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">13.3</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Allowance for doubtful accounts</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">156.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">135.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">20.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">15.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">536.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">566.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(29.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">(5.2)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: white">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt"><B>Costs, administrative &amp; selling expenses</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>3,454.2</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>3,151.3</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>302.9</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>9.6</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>10,537.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>9,258.3</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,279.1</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>13.8</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">% of net revenue (excluding construction revenue)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">67.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">68.0</FONT></TD>
    <TD STYLE="white-space: nowrap; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">72.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">72.7</FONT></TD>
    <TD STYLE="white-space: nowrap; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">% of net revenue (excluding construction revenue and the IDP)</FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">67.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">68.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">68.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">72.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify; color: navy"><B>Salaries, payroll charges
and benefits, and Pension plan obligations</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify; color: red">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 28.35pt; text-align: justify">The R$ 36.2 million increase (+4.7%)
recorded in 3Q23 was mainly due to:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">The salary adjustment of 4.9% (R$ 15.0 million) in May 2023 and the application
of 1% referring to the Career and Salary Plan in February 2023, partially offset by the 3.7% decline in the average number of employees;
and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 15.1 million in health care expenses, due to higher use of services and increased
average hospital costs.</TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 42.55pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 42.55pt; text-align: justify">The R$ 683.9 million increase
(+31.0%) in 9M23, was mainly due to:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">An increase of R$ 529.6 million, due to the provision created for employees who
joined the IDP;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 31.5 million in health care expenses; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 88.6 million due to the 12.9% and 4.9% salary adjustments in May 2022 and May
2023, respectively, and the application of 1% referring to the Career and Salary Plan in February 2023, partially offset by the 2.3% decline
in the average number of employees.</TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify; color: navy"><B>General supplies</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 0 28.35pt; text-align: justify">Decrease of R$ 11.2 million
(-10.4%), spread across various items, the most significant of which was the R$ 3.0 million decrease with fuels and lubricants.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify; color: red">&nbsp;</P>


<!-- Field: Page; Sequence: 29 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->27<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; color: red">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>Treatment supplies</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify">Decrease of R$ 36.7 million (-24.5%),
due to (i) the decrease in some product prices, some of which were impacted by the international market, such as aluminum polychloride;
and (ii) the lower use of algaecides, coagulants, and disinfectants in several water treatment stations to maintain the quality of raw
water.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">Decrease of R$ 23.0 million
(-5.2%) in 9M23, mainly impacted by the volatility in the international prices and the product utilization mix aligned with the strategy
of achieving the best cost/benefit. Furthermore, due to the greater availability of water, it was possible to use more water from reservoirs
that have lower treatment costs.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>Services</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">Service expenses totaled R$
724.5 million, an increase of R$ 89.2 million (+14.0%) over the R$ 635.3 million recorded in 3Q22. The main increases were:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 37.1 million with paving and replacing of sidewalks;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 26.7 million with technical services;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 11.1 million with credit recovery;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 8.2 million with surveillance; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 7.3 million for the maintenance of water and sewage networks, connections,
and systems.</TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 42.55pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 21.3pt; text-align: justify">Expenses increased by R$ 245.8
million (+14.1%) in 9M23, moving up from R$ 1,746.8 million in 2022 to R$ 1,992.6 million in 2023, due to:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 96.7 million paid to technical services, mainly IT consulting, maintenance,
and support;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 51.6 million for the maintenance of water and sewage networks, connections,
and systems;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 47.5 million with paving and replacing of sidewalks;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 18.5 million with meter reading and bill delivery;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 11.1 million with credit recovery;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 9.1 million with advertising; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">R$ 8.6 million with surveillance.</TD></TR></TABLE>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 42.55pt; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>Electricity</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">Electricity expenses totaled R$
368.0 million in 3Q23, an increase of R$ 8.7 million (+2.4%) over the R$ 359.3 million recorded in 3Q22. Of the total, the Free Market
Tariffs (ACL) accounted for 64.6% of total expenses in 3Q23 (65.4% in 3Q22) while the Regulated Market Tariffs (ACR) accounted for 35.4%
(34.6% in 3Q22).</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">The main factors that contributed
to this variation were:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 8.35pt"><FONT STYLE="font-size: 11pt">An average increase of 5.9% in ACL prices (including
Grid Market Tariffs - TUSD), with an 11.3% decrease in consumption; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 8.35pt"><FONT STYLE="font-size: 11pt">An average increase of 10.7% in ACR tariffs, with
a decrease of 8.1% in consumption.</FONT></TD></TR></TABLE>

<P STYLE="font: 11pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">The volatility in average costs
observed in 9M23, the variation in this line came to R$ 3.1 million (0.3%).</P>

<P STYLE="font: 11pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>General expenses </B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">Increase of R$ 96.6 million (+26.7%),
totaling R$ 458.1 million in 3Q23, compared to the R$ 361.5 million reported in 3Q22, mainly due to:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 8.35pt"><FONT STYLE="font-size: 11pt">Increase of R$ 64.9 million in expenses with lawsuits
in 3Q23; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 8.35pt"><FONT STYLE="font-size: 11pt">Higher provision for transfer to the Municipal Funds
for Environmental Sanitation and Infrastructure, of R$ 28.1 million.</FONT></TD></TR></TABLE>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">Expenses with municipal transfers
totaled R$ 221.1 million in 3Q23, compared to the R$ 193.0 million reported in 3Q22.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">Expenses with the use of water totaled
R$ 27.6 million in 3Q23, compared to the R$ 26.8 million reported in 3Q22.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">General expenses increased by R$
171.2 million (+17.2%) in 9M23, mainly due to:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 8.35pt"><FONT STYLE="font-size: 11pt">Increase in the provision for transfer to the Municipal
Funds for Environmental Sanitation and Infrastructure, of R$ 86.3 million; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 8.35pt"><FONT STYLE="font-size: 11pt">Increase of R$ 79.5 million in expenses with lawsuits.</FONT></TD></TR></TABLE>

<P STYLE="font: 11pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 42.55pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>Depreciation
and amortization</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">Increase of R$ 99.8 million (+16.3%)
(R$ 239.8 million (+13.3%) in 9M23), due to the beginning of operations of intangible assets, totaling R$ 6.4 billion.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify; color: navy"><B>Allowance for doubtful
accounts</B></P>

<P STYLE="font: 11pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 0 28.35pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 8.35pt 6pt 28.35pt; text-align: justify">Increase of R$ 20.8 million (+15.3%),
moving up from R$ 135.8 million in 3Q22 to R$ 156.6 million in 3Q23, due to the higher delinquency in 3Q23. Reduction of R$ 60.8 million
(-28.0%) year-over-year in 3Q23, primarily due to the impact of the fair held in August and September 2023.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 14pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 14pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify; color: navy"><B>&nbsp;</B></P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 14pt Arial, Helvetica, Sans-Serif; margin: 0; color: navy"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/200% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.65pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-size: 14pt; color: #000099"><B>6.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-size: 14pt; color: navy"><B>Financial result</B></FONT></TD></TR></TABLE>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 58%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 12%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 10%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 9pt"><B><I>R$ million</I></B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Var.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>3Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>3Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Financial expenses, net of revenue</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(330.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(229.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(101.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">44.0</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Monetary and exchange variations, net</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(98.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">348.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(446.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(128.2)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>Financial Result</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(428.9)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>118.5</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(547.4)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(461.9)</B></FONT></TD></TR>
  </TABLE>
<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify; color: navy"><B>Financial expenses, net
of revenue</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 59%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 13%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 13%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 9pt"><B><I>R$ million</I></B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Var.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>3Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>3Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 58.2pt; text-indent: -58.2pt"><FONT STYLE="font-size: 9pt">Financial expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">&nbsp;&nbsp;&nbsp;Interest and charges on domestic borrowings and financing</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(297.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(271.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(26.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">9.6</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">&nbsp;&nbsp;&nbsp;Interest and charges on international borrowings and financing</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(22.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(14.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(7.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">53.4</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">&nbsp;&nbsp;&nbsp;Other financial expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(158.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(89.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(68.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">75.9</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>Total financial expenses</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(477.8)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(375.8)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(102.0)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>27.1</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Financial revenue</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">147.0</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">146.1</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">0.9</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">0.6</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>Financial expenses, net of revenue</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(330.8)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(229.7)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(101.1)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>44.0</B></FONT></TD></TR>
  </TABLE>
<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 0 0; text-align: justify; color: red">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-transform: uppercase; text-align: justify"><FONT STYLE="text-transform: none">&nbsp;</FONT></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-transform: uppercase; text-align: justify"><FONT STYLE="text-transform: none">The
main impacts resulted from:</FONT></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-transform: uppercase; text-align: justify"><FONT STYLE="text-transform: none">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">An increase of R$ 26.0 million in interest and charges on domestic borrowings
and financing, mainly due to funding from IDB Invest 2022 and IDB Invest 2023 (in July 2022 and May 2023, respectively), with an impact
of R$ 21.4 million;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">An increase of R$ 7.8 million in interest and charges on international borrowings
and financing, mainly due to an increase in the interest rate of some contracts with IDB and IBRD, due to the variation of the average
SOFR rate (from 2.14% in 3Q22 to 5.27% in 3Q23); and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt">Increase of R$ 68.2 million in other financial expenses, due to (i) the R$ 42.0
million increase in interest charged on performance agreements, as a result of the higher number of agreements that entered the payment
phase; and (ii) increased provisioning of interest charged on lawsuit, of R$ 26.3 million.</TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 28.35pt; text-align: justify; color: red">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify; color: navy"><B>Monetary and exchange variations,
net</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 56%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 12%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 12%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 9pt"><B><I>R$ million</I></B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Var.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>3Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>3Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Monetary and exchange variations on liabilities</FONT></TD>
    <TD STYLE="white-space: nowrap; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">&nbsp;&nbsp;&nbsp;Monetary variations on borrowings and financing </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(14.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">14.7</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(29.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(199.3)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">&nbsp;&nbsp;&nbsp;Exchange variations on borrowings and financing</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(49.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">27.3</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(77.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(282.8)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">&nbsp;&nbsp;&nbsp;Other monetary variations</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(68.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(43.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(24.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">56.8</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>Total monetary and exchange variations on liabilities</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(133.2)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(1.8)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(131.4)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>7,300.0</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Monetary and exchange variations on assets</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">35.1</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">350.0</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(314.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(90.0)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>Monetary and exchange variations, net</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(98.1)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>348.2</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(446.3)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(128.2)</B></FONT></TD></TR>
  </TABLE>
<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: red"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 28.35pt; text-align: justify">The negative effect of net monetary
and exchange variations in 3Q23 was R$ 446.3 million, especially due to:</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 42.55pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-size: 11pt">R$ 29.3 million increase in monetary variations
on borrowings and financing, due to the increase in the IPCA consumer price index (from -1.32% in 3Q22 to 0.61% in 3Q23);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-size: 11pt">An exchange variation loss of R$ 77.2 million on
borrowings and financing, the appreciation of the U.S. Dollar and the Yen in 3Q23 (3.9% and 0.5%, respectively), compared to the appreciation
of the U.S. Dollar and the depreciation of the Yen in 3Q22 (3.2% and -3.2%, respectively);</FONT></TD></TR></TABLE>


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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->30<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-size: 11pt">Increase of R$ 24.9 million in other monetary variations,
mainly on lawsuits, of R$ 20.9 million; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-size: 11pt">Impact of R$ 314.9 million in monetary and exchange
variations on assets, due to the recognition of R$ 324.5 million referring to the non-recurring monetary adjustment on the GESP 2015 agreement
in 3Q22, resulting from the judicial order prohibiting the transfer of the reservoirs of the Alto Tiet&ecirc; Production System.</FONT></TD></TR></TABLE>

<P STYLE="font: 11pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 28.35pt; text-align: justify; color: red">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 24.55pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-size: 14pt; color: #000099"><B>7.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-size: 12pt; color: navy"><B>Income tax and social contribution</B></FONT></TD></TR></TABLE>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify">The R$ 125.9 million decrease in 3Q23 was
mainly due to:</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-size: 11pt">R$ 302.9 million increase in costs and expenses;
and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.4pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Symbol; font-size: 11pt">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-size: 11pt">Negative variation of R$ 547.4 million in the financial
result.</FONT></TD></TR></TABLE>

<P STYLE="font: 11pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 42.55pt; text-align: justify">The aforementioned factors
were mitigated mainly by the R$ 465.6 million increase in net operating income.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/200% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 24.55pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-size: 14pt; color: #000099"><B>8.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-size: 14pt; color: navy"><B>Indicators</B></FONT></TD></TR></TABLE>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0; color: navy"><TR STYLE="vertical-align: top">
<TD STYLE="width: 24.55pt"></TD><TD STYLE="width: 18pt"><B>a)</B></TD><TD STYLE="text-align: justify"><B>Operational</B></TD></TR></TABLE>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; width: 70%; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="color: black"><B>Information*</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 11%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="color: black"><B>3Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 10%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="color: black"><B>3Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 9%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="color: black"><B>%</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Water connections<SUP>1</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">9,402</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">9,325</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">0.8</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Sewage connections<SUP>1</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">8,090</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">7,990</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">1.3</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Population directly served - water<SUP>2</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">28.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">27.9</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">0.7</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Population directly served - sewage<SUP>2</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">24.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">24.7</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">0.8</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Number of employees</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">11,606</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">12,372</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">(6.2)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt; color: black">Volume of water produced in the quarter <SUP>3</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">746</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">709</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">5.2</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt; color: black">Volume of water produced no 9M23 <SUP>3</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">2,213</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">2,134</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">3.7</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt; color: black">IPM - Measured Water Loss (%) <SUP>3</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">29.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">28.6</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">3.1</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt; color: black">IPDt (liters/connection x day) <SUP>3</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">257</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">248</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif">3.6</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 85.05pt 0 70.9pt">1. Active connections in thousand units at the end of the
period.</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 99.2pt 0 70.9pt">2.&nbsp;In million inhabitants, at the end of the period.
Does not include wholesale.</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 99.2pt 0 70.9pt">3. Millions of m<SUP>3</SUP><SUB>.</SUB> Excludes volumes
produced in the municipalities of Agua&iacute;, Mau&aacute;, and Tapiratiba in 3Q22.</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 99.2pt 0 70.9pt"><SUP>*</SUP> Unaudited by external auditors</P>

<P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0 99.2pt 0 0; text-indent: 14.2pt"><SUP>&nbsp;</SUP></P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0 21.55pt 0 0; text-transform: uppercase; text-align: left"><FONT STYLE="text-transform: none">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0; color: navy"><TR STYLE="vertical-align: top">
<TD STYLE="width: 24.55pt"></TD><TD STYLE="width: 18pt"><B>b)</B></TD><TD STYLE="text-align: justify"><B>Economic</B></TD></TR></TABLE>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; width: 72%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">Economic variables at the close of the quarter *</TD>
    <TD STYLE="white-space: nowrap; width: 14%; border-top: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>3Q23</B></TD>
    <TD STYLE="white-space: nowrap; width: 14%; border-top: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><B>3Q22</B></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Amplified Consumer Price Index <SUP>(1)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0.61</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-1.32</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">National Consumer Price Index <SUP>(1)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0.22</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-1.23</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Consumer Price Index <SUP>(1)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-0.05</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0.40</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">DI <SUP>(2)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">13.28</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">13.47</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">U.S. dollar <SUP>(3)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">5.0076</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">5.4066</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Yen <SUP>(3)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0.03351</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0.03737</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center; color: red"><B>&nbsp;</B></P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 78pt; text-indent: -7.1pt">1. Accrued in the quarter (%)</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 78pt; text-indent: -7.1pt">2. Average quarterly rate (%)</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 78pt; text-indent: -7.1pt"><SUP>.</SUP>3. Ptax sale rate on the last day</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 78pt; text-indent: -7.1pt"><SUP>*</SUP> Unaudited by external auditors</P>


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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->31<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.35pt"></TD><TD STYLE="width: 28.35pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>9.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: navy"><B>Borrowings and
financing</B></FONT></TD></TR></TABLE>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Calibri, Helvetica, Sans-Serif; font-size: 8pt"><B><I>R$ thousand</I></B></FONT></TD></TR>
  <TR STYLE="background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; width: 28%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>DEBT PROFILE</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 1%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 6%; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR STYLE="background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>2023</B></FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>2024</B></FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>2025</B></FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>2026</B></FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>2027</B></FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>2028</B></FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>2029 onwards</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>TOTAL</B></FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>% of total</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt"><B><I>Local currency</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">Debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">342,735</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,205,249</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,334,931</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,213,264</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,360,087</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">656,199</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,548,625</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">7,661,090</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">40</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">Brazilian Federal Savings Bank</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">25,810</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">107,238</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">113,931</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">121,043</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">128,588</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">136,471</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">989,491</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,622,572</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">9</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">BNDES</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">58,759</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">235,928</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">215,485</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">205,555</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">192,861</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">72,977</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">223,213</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,204,778</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">6</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">IDBs - National</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">14,100</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">249,099</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">260,899</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">330,209</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">315,069</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">420,959</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,356,865</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3,947,200</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">21</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">IFC</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">7,600</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">22,800</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">39,200</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">51,800</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">70,800</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">103,600</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">934,658</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,230,458</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">6</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">Leases (Concession Agreements, Program Contracts, and Contract Asset) (1)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">49,299</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">51,852</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">30,229</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">34,632</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">38,007</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">119,669</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">323,688</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">Leases (others) (2)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">26,637</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">59,141</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">50,856</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">20,889</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">720</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">158,243</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">Other</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,711</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,765</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">142</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">8,618</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">Interest and other charges</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">254,428</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">107,897</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">362,325</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2</FONT></TD></TR>
  <TR STYLE="background-color: #C5D9F1">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt"><B><I>Total in local currency</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>732,780</B></FONT></TD>
    <TD STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,039,651</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,069,919</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,973,131</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,102,757</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,428,213</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>6,172,521</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>16,518,972</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>87</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt"><B><I>Foreign currency</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">IDB</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">51,469</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">66,405</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">29,873</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">29,873</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">29,873</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">440,818</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">648,311</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">3</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">IBRD</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">285,533</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">437,758</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">JICA</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">4,837</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">655,119</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">1,378,881</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">8</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt">Interest and other charges</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">16,032</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">2,936</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">18,968</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="background-color: #C5D9F1">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt"><B><I>Total in foreign currency</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>20,869</B></FONT></TD>
    <TD STYLE="vertical-align: top; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>228,635</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>240,635</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>204,103</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>204,103</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>204,103</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,381,470</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,483,918</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>13</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR STYLE="background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-size: 8pt"><B><I>OVERALL TOTAL</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>753,649</B></FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,268,286</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,310,554</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,177,234</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>2,306,860</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>1,632,316</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>7,553,991</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>19,002,890</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 8pt"><B>100</B></FONT></TD></TR>
  </TABLE>
<P STYLE="font: 7pt/12pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">1 Refers to work contracts signed as Assets Lease;</P>

<P STYLE="font: 7pt/12pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">2 Obligations related to leasing agreements, mainly
vehicle leases.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 28.35pt; text-align: justify; color: navy"><B>Covenants</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 6pt 28.35pt; text-align: justify">The table below shows the most
restrictive clauses in 3Q23:</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="background-color: #8EA9DB">
    <TD STYLE="white-space: nowrap; width: 70%; border-top: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 30%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt"><B>Covenants</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Adjusted EBITDA / Adjusted Financial Expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt">Equal to or higher than 2.80</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">EBITDA / Financial Expenses Paid</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt">Equal to or higher than 2.35</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Adjusted Net Debt / Adjusted EBITDA</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt">Equal to or lower than 3.80</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Net Debt / Adjusted EBITDA</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt">Equal to or lower than 3.50</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Total Adjusted Debt / Adjusted EBITDA</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt">Lower than 3.65</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Other Onerous Debt </FONT><FONT STYLE="font-size: 9pt"><SUP>1</SUP></FONT> <FONT STYLE="font-size: 8pt">/ Adjusted EBITDA</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt">Equal to or lower than 1.30</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 8pt">Adjusted Current Ratio</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 8pt">Higher than 1.00</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 106.3pt 0 0">&nbsp;</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 106.3pt 0 63.8pt">1 &ldquo;Other Onerous Debts&rdquo; correspond to the sum
of pension plan obligations and healthcare plan, installment payment of tax debts, and installment payment of debts with the electricity
supplier.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 12pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 12pt 28.35pt; text-align: justify">In 3Q23, the Company met the requirements
of its borrowings and financing agreements.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 12pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 12pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 12pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 12pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 12pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 12pt 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 34 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->32<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: bold 12pt/193% Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 169.65pt; margin-bottom: 0">Comments on the Company&rsquo;s Performance</P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.35pt"></TD><TD STYLE="width: 28.35pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>10.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: navy"><B>Investments</B></FONT></TD></TR></TABLE>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 28.35pt; text-align: justify">Investments totaled R$ 1,404.4
million in 3Q23, presented as additions in the notes to the quarterly information under Contract Asset, Intangible Assets, and Property,
Plant and Equipment, of R$ 1,251.1 million, R$ 105.3 million, and R$ 48.0 million, respectively. Disbursements in 2Q23 referring to investments,
including from previous periods, totaled R$ 751.8 million.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 28.35pt; text-align: justify">The table below shows investments
broken down by water and sewage:</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="4" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B><I>R$ million</I></B></FONT></TD></TR>
  <TR STYLE="background-color: #95B3D7">
    <TD STYLE="white-space: nowrap; width: 53%; border-left: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 13%; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Water</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 17%; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Sewage </B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 17%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Total</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Investments made</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">610.1 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">794.3 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">1,404.4 </FONT></TD></TR>
  </TABLE>
<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; color: red">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 28.35pt; text-align: justify">In 3Q23, the main investments were
in loss reduction works, sewage expansion, and sewage expansion of the New Pinheiros River.</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; color: red">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.35pt"></TD><TD STYLE="width: 28.35pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>11.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: navy"><B>Public-Private
Partnership - PPP</B></FONT></TD></TR></TABLE>

<P STYLE="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 28.35pt; text-align: justify">The chart below shows expenses
with Public-Private Partnerships in 3Q23, compared to the figures reported in 3Q22:</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B><I>R$ thousand</I></B></FONT></TD></TR>
  <TR STYLE="background-color: #B4C6E7">
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 54%; border-top: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 12%; border-top: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>3Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 12%; border-top: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>3Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 12%; border-top: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>Var.</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 10%; border-top: Black 1.5pt solid; border-bottom: Black 1.5pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-size: 9pt"><B>%</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>S&Atilde;O LOUREN&Ccedil;O PRODUCTION SYSTEM</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">General supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">4,855.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">4,617.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">237.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">5.1</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Services</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">10,245.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">9,743.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">501.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">5.1</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">General expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">1,341.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">1,276.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">65.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">5.1</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Amortization</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">42,474.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">42,474.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Financial expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">81,204.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">81,019.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">185.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">0.2</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #D9E1F2">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>Total</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>140,121.8</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>139,131.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>990.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>0.7</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>ALTO TIET&Ecirc; PRODUCTION SYSTEM</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">General supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Services</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">18,539.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">18,639.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(99.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(0.5)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">General expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Amortization</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">4,078.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">4,333.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(255.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(5.9)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt">Financial expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">4,529.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">6,517.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(1,988.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt">(30.5)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #D9E1F2">
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>Total</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>27,147.3</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>29,490.5</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(2,343.2)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(7.9)</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #B4C6E7">
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-size: 9pt"><B>Total expenses with PPPs</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>167,269.1</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>168,621.9</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(1,352.8)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-size: 9pt"><B>(0.8)</B></FONT></TD></TR>
  </TABLE>
<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 35; Options: NewSection; Value: 33 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->33<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>1</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Operations</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Companhia de Saneamento B&aacute;sico do Estado de S&atilde;o
Paulo (SABESP or Company) is a mixed-capital company headquartered in the municipality of S&atilde;o Paulo, at Rua Costa Carvalho, 300,
CEP 05429-900, controlled by the S&atilde;o Paulo State. The Company is engaged in the provision of basic and environmental sanitation
services in the S&atilde;o Paulo State, and supplies treated water and sewage services on a wholesale basis.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In addition to providing basic sanitation services in
the S&atilde;o Paulo State, SABESP may perform activities in other states and countries and can operate in drainage, urban cleaning, solid
waste handling and energy markets. SABESP aims to be a world reference in the provision of sanitation services, in a sustainable, competitive,
and innovative manner, with a focus on customers.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, the Company operated water
and sewage services in 375 municipalities of the S&atilde;o Paulo State, 351 of which have already signed contracts, according to Law
11,445/2007. Most of these municipalities&rsquo; operations are based on 30-year concession, program, and service contracts, except for
the municipalities of Guarulhos, Mau&aacute;, Santo Andr&eacute;, S&atilde;o Bernardo do Campo, S&atilde;o Jo&atilde;o da Boa Vista, and
Tejup&aacute;, which have a 40-year term.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The table below shows a summary of the contractual situation
of the municipalities served:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="vertical-align: bottom; width: 52%; padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 16%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 30,</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 16%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>December 31,</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: top; width: 16%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 30,</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total municipalities that have already signed contracts</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">351</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">351</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">351</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;Balance &ndash; intangible and contract assets</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">47,247,836</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45,292,307</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">44,260,083</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;Percentage of intangible and contract assets</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">95.04%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">94.49%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">94.43%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.65pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">14,916,218</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">17,767,561</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">13,128,723</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.65pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Percentage of revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">95.37%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">95.37%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">95.40%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Municipalities with expired contracts:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;Balance &ndash; intangible and contract assets</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11,350</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11,519</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11,592</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 7.1pt; line-height: 110%; text-indent: -7.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;Percentage of intangible and contract assets</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.02%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.02%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.02%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.65pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">12,548</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">15,236</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">10,981</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.65pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Percentage of revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.08%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.08%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.08%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Municipalities with concession agreements due by 2030:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">23</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">23</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">23</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;Balance &ndash; intangible and contract assets</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,051,713</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,072,138</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,040,458</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;Percentage of intangible and contract assets</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2.12%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2.24%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2.22%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.65pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">602,143</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">711,452</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">523,277</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.65pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Percentage of revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3.85%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3.82%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3.80%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Municipality of S&atilde;o Paulo:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>

<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 52%; padding-right: 5.4pt; padding-left: 8.65pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Percentage of intangible and contract assets</FONT></TD>
    <TD STYLE="width: 16%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">42.95%</FONT></TD>
    <TD STYLE="width: 16%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">43.33%</FONT></TD>
    <TD STYLE="width: 16%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">43.02%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 8.65pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Percentage of revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45.16%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45.14%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45.36%</FONT></TD></TR>
  </TABLE>
<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

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<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company's shares have been listed on the Novo Mercado
segment of B3 under ticker SBSP3 since April 2002 and on the New York Stock Exchange (NYSE) as Level III American Depositary Receipts
(&ldquo;ADRs&rdquo;), under ticker SBS, since May 2002.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Since 2008, the Company has been setting up partnerships
with other companies, which resulted in the following companies: Sesamm, &Aacute;guas de Andradina, Saneaqua Mairinque, Aquapolo Ambiental,
&Aacute;guas de Castilho, Attend Ambiental, Paulista Geradora de Energia, Cantareira SP Energia, FOXX URE-BA Ambiental, and Infranext
Solu&ccedil;&otilde;es em Pavimenta&ccedil;&atilde;o. Although SABESP has no majority interest in the capital stock of these companies,
the shareholders&rsquo; agreements provide for the power of veto and casting votes on certain issues jointly with associates, indicating
the shared control in the management of these investees, except for Saneaqua Mairinque, which, as of August 2020, no longer has a shared
control.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 0 21.3pt; text-align: justify"><B>&bull;&#9;Municipality of Est&acirc;ncia Tur&iacute;stica
de Ol&iacute;mpia</B></P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In July 2023, the Municipal Government of Ol&iacute;mpia
&ndash; SP (&ldquo;Ol&iacute;mpia&rdquo;) approved the bidding process referring to Tender 02/2023, whose subject was the granting of
a concession for providing public water supply and sewage services for 30 years, and awarded the contract to SABESP, with a fixed concession
fee of R$ 148 million.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The municipality of Ol&iacute;mpia is located 430 km
from the capital city of S&atilde;o Paulo, has an estimated population of 56 thousand inhabitants, and universalized water and sewage
coverage. The municipality will require operational, commercial, efficiency, and water loss reduction efforts from the Company.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As established by the Bid Notice (Bid Notice), the winning
bidder should create, before the signing of the agreement, a special purpose entity (SPE) to execute the terms of the Concession Agreement.
The contract value estimated in the Bid Notice is R$ 1,182,495 (base date of August 2022), corresponding to the Granting Authority&rsquo;s
estimate of the cumulative concession revenues, while estimated investments amount to R$ 81,112 (base date of August 2022) for the entire
duration of the concession.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Notice also defines that the subscribed share capital
of the Concessionaire, at the time of its creation, must be, at least, R$ 8,111. Therefore, on August 11, 2023, SABESP Ol&iacute;mpia
S/A was created with the corporate objective of providing public water supply and sewage services in the Municipality of Ol&iacute;mpia.
The subscribed share capital of the SPE was partially paid-up by SABESP, totaling R$ 811 or 811,121 common shares, totaling 10% of the
share capital. The remaining 7,300,087 subscribed common shares, totaling R$ 7,300, will be paid up within 60 months from the Commencement
Order, which is issued by the Granting Authority that authorizes the start of the Concessionaire&rsquo;s provision of services, under
the provisions of the Notice and Agreement.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Concession Agreement for the provision of public
water supply and sewage services in the Municipality of Ol&iacute;mpia was executed on October 11, 2023. Since the signing of the agreement,
the transaction has been carried out by DAEMO (Departamento de &Aacute;gua e Esgoto do Munic&iacute;pio de Ol&iacute;mpia) and assisted
by the SPE for 60 days. After this period, the entire operation will be carried out by the SPE and the Concession term will begin.</P>


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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Of the total, the amount corresponding to the fixed concession
totaling R$ 148 million, 50% has already been paid by SABESP on August 30, 2023, i.e., R$ 74 million as a condition for the contract signing,
and 50%, duly authorized by IPCA, will be paid by SABESP Ol&iacute;mpia S/A by 365 days after the payment of the first installment.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">A monthly variable concession fee will be paid by the
10th day of the subsequent month, corresponding to 1% of the net tariff revenue.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">To ensure faithful compliance with the obligations to
be assumed by the Concessionaire, upon the signing of the agreement, proof of guarantee of the contractual obligations must be presented
to the granting authority, in an amount corresponding to 5% of the estimated investment value.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Given that SABESP owns 100% of the SPE and meets control
requirements, the Company consolidated SABESP Ol&iacute;mpia S/A in the quarterly information as of September 30, 2023, following the
Accounting Policy described in Note 3.1.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/107% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 8pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol; font-size: 10pt">&#183;</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Privatization and Proposal of New
Concession Agreements</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">On September 18, 2023, the Board of the State Privatization
Program (CDPED) resolved to recommend that:</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 0 14.2pt; text-align: justify; text-indent: -7.1pt">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 0 14.2pt; text-align: justify">(i) &nbsp; the Investment Partnerships Secretariat
and the Environment, Infrastructure, and Logistics Secretariat take the necessary steps to submit the draft of the Company&rsquo;s privatization
law to the Governor&rsquo;s office; and</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 0 14.2pt; text-align: justify; text-indent: -7.1pt">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 0 14.2pt; text-align: justify">(ii) &nbsp; SABESP, under article 5, II combined
with article 7, paragraph 2 and paragraph 4 of Law 9,361/96, starts the procedure for the selection and hiring of coordinating banks and
other services required for the future public offering.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, as provided for in paragraph 2 of
article 14 of Federal Law 14,026/2020 (&ldquo;New Legal Sanitation Framework&rdquo;), the State of S&atilde;o Paulo send Official Letters
to the municipalities operated by the Company with proposals to change the conditions of the concession agreements in effect (&ldquo;Communication&rdquo;).</P>

<P STYLE="font: 12pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">The Communication highlights general aspects of the proposal
for a new concession agreement (&ldquo;New Agreement&rdquo;) aiming at replacing the existing agreements, under article 14 of the New
Legal Sanitation Framework, indicating that the following guidelines will be observed under the New Agreement to be executed with these
municipalities:</P>

<P STYLE="font: 12pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 6pt 14.2pt; text-align: justify"><B>(a) </B>the anticipation of achieving the
universalization goals established in the New Sanitation Framework for 2029, subject to any shorter deadlines contractually outlined;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 6pt 14.2pt; text-align: justify"><B>(b) </B>the extension of the concession agreement
for 2060;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 6pt 14.2pt; text-align: justify"><B>(c)</B> the obligation of SABESP to serve
the population residing in consolidated informal urban settlements and rural areas, covering the entire municipal territory; and</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 14.2pt; text-align: justify"><B>(d)</B> the detailing of investments to
be made in each municipality.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Management expects that the funds raised with the improved
water security from the works carried out, the generation of operational cash, and credit lines available for investments, will be sufficient
to meet the Company&rsquo;s commitments and not compromise the necessary investments.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>Approvals</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The quarterly information was approved by the Board of
Directors on November 9, 2023.</P>


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    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>2</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Basis of preparation and presentation
of the quarterly information</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Presentation of the Quarterly Information</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The quarterly information as of September 30, 2023, was
prepared based on the provisions of CPC 21 (R1) &ndash; Interim Financial Information and the international standard IAS 34 &ndash; Interim
Financial Reporting, issued by the International Accounting Standards Board (IASB), applicable to the preparation of the Quarterly Information
Form &ndash; ITR, and is fairly presented consistent with the rules issued by the Brazilian Securities and Exchange Commission (CVM).
Accordingly, this Quarterly Information takes into consideration the Official Letter CVM/SNC/SEP 003 of April 28, 2011, which allows the
entities to present selected notes to the financial statements in cases of redundant information already disclosed in the Annual Financial
Statements. Therefore, the quarterly information as of September 30, 2023, does not include all the notes and reporting required by the
standards for the annual financial statements, and accordingly, shall be read jointly with the Annual Financial Statements as of December
31, 2022, prepared under the International Financial Reporting Standards &ndash; IFRS, issued by the International Accounting Standards
Board &ndash; IASB, and the accounting practices adopted in Brazil, which observe the pronouncements issued by the Brazilian Accounting
Pronouncements Committee - CPC. Therefore, in this quarterly information, the notes below were either not presented or are not as detailed
as and/or have the same references as those in the annual financial statements (according to numerical references):</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">i.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Summary of significant accounting policies
(Note 3);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">ii.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Changes in accounting practices and
disclosures (Note 4);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">iii.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Risk management &ndash; Financial instruments
(Note 5.4);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">iv.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Key accounting estimates and judgments
(Note 6);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">v.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Related-party balances and transactions
(Note 11);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">vi.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Investments (Note 12);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">vii.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Intangible assets (Note 15);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">viii.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Borrowings and financing (Note 17);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">ix.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Deferred taxes and contributions (Note
19);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">x.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Provisions (Note 20);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">xi.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Pension plan obligations (Note 22);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">xii.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Equity (Note 24);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">xiii.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Insurance (Note 27);</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">All material information related to the quarterly information,
and this information alone, is being disclosed and corresponds to the information used by the Company&rsquo;s Management in its administration.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The amounts disclosed in the Notes to the quarterly information
are in thousands of Brazilian reais, unless otherwise stated.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>3</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Summary of significant accounting
policies</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The significant accounting policies used in the preparation
of the quarterly information as of September 30, 2023, are consistent with those used to prepare the Annual Financial Statements for the
year ended December 31, 2022, disclosed in Note 3 of such financial statements, except for item 3.1 below.</P>


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    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>3.1 Consolidation</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company controls an entity when (i) it has power
over the investee; (ii) it is exposed to, or has rights to, variable returns from its involvement with the investee; and (iii) it has
the ability to use its power to affect its returns.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">When the Company does not hold the majority of voting
rights in an investee, it will have power over the investee when the voting rights are sufficient to give it the practical ability to
unilaterally conduct the relevant activities of the investee. When assessing whether SABESP's voting rights in an investee are sufficient
to give it power, the Company considers all relevant facts and circumstances, including (i) the Company's proportionate interest in voting
rights regarding the interests of other voting right holders; (ii) potential voting rights held by the Company, other voting right holders,
or other parties; (iii) rights arising from other contractual agreements; and (iv) any additional facts and circumstances that indicate
whether the Company has the ability to conduct the relevant activities of the investee.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The financial statements of the subsidiary are included
in the consolidated financial statements from the date the Company obtains control until the date when such control ceases to exist. Revenues
and expenses of a subsidiary acquired or disposed of during the fiscal year are included in the results from the date the Company obtains
control until the date when the Company ceases to control the subsidiary.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The subsidiary's financial statements have been prepared
for the same reporting date of the parent company.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">All intragroup balances, revenues, expenses, and unrealized
gains and losses from intragroup transactions have been eliminated. Other comprehensive results of the parent company, where applicable,
will be directly recorded in the Company&rsquo;s equity, under &ldquo;other comprehensive results&rdquo;.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, SABESP held 100% of direct
interest in Sabesp Ol&iacute;mpia S/A.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>


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    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>4</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Risk management</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>4.1</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Financial Risk Management</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>Financial risk factors</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company's activities are affected by the Brazilian
economic scenario, making it exposed to market risk (exchange rate and interest rate), credit risk, and liquidity risk. Financial risk
management is focused on the unpredictability of financial markets and seeks to minimize potential adverse effects on financial performance.</P>

<P STYLE="font: 9.5pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has not utilized derivative instruments in
any of the reported periods.</P>

<P STYLE="font: 9.5pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Frutiger Light; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif"><B>Market risk</B></FONT></TD></TR></TABLE>

<P STYLE="font: 9.5pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>Foreign currency risk</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Foreign currency exposure implies market risks associated
with currency fluctuations, since the Company has foreign currency-denominated liabilities, arising from long-term funding, in development
institutions, at more attractive interest rates, in U.S. dollars and Yen.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The management of currency exposure considers several
current and projected economic factors, besides market conditions.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">This risk arises from the possibility that the Company
may incur losses due to exchange rate fluctuations that would impact liability balances of foreign currency-denominated borrowings and
financing and related financial expenses. The Company does not maintain hedge or swap contracts or any derivative financial instrument
to hedge against this risk.</P>


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    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Part of the financial debt, totaling R$ 2,521,939 as
of September 30, 2023 (R$ 2,809,441 as of December 31, 2022), is indexed to the U.S. dollar and Yen. The exposure to exchange risk is
as follows:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%; padding-left: 5.4pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 48%; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 15%">
<DIV STYLE="margin-right: 5.65pt; margin-left: 5.65pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>Foreign currency</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>(in thousands)</B></P>
</DIV></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>R$</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 15%">
<DIV STYLE="margin-right: 5.65pt; margin-left: 5.65pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>Foreign currency</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>(in thousands)</B></P>
</DIV></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>R$</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Borrowings and financing &ndash; US$</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">223,979</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,121,597</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">191,022</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">996,695</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Borrowings and financing &ndash; Yen</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">41,222,733</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,381,374</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45,369,189</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,795,259</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and charges from borrowings and financing &ndash; US$</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">16,048</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">6,985</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and charges from borrowings and financing &ndash; Yen</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,920</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">10,502</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total exposure</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,521,939</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,809,441</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Borrowing cost &ndash; US$</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(35,529)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(31,037)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Borrowing cost &ndash; Yen</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(2,492)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(2,646)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total foreign currency-denominated borrowings (Note 16)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">2,483,918</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">2,775,758</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The 10.5% decrease in the balance of the foreign currency-denominated
debt as of September 30, 2023 compared to December 31, 2022 was mainly impacted by the depreciations of the US dollar and the Yen against
the Brazilian real. The table below shows the prices and exchange variations in the period:</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 16%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 35%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD STYLE="width: 32%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD>
    <TD STYLE="width: 17%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Var.</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">US$</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">R$ 5.0076</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">R$ 5.2177</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-4.0%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Yen</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">R$ 0.03351</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">R$ 0.03957</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-15.3%</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Borrowings and financing fell by R$&nbsp;297,518 from
January to September 2023 (a decrease of R$&nbsp;554,575 from January to September 2022), due to exchange rate changes. See Note 16 (ii).
As of September 30, 2023, if the Brazilian real had depreciated or appreciated by 10 percentage points, in addition to the impacts already
mentioned above, against the US dollar and Yen with all other variables held constant, the effects on results before taxes on the nine-month
period ended September 30, 2023 would have been R$ 252,194 (R$ 264,847 for the nine-month period ended September 30, 2022), lower or higher.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The probable scenario below presents the effect on the
income statements for the next 12 months, considering the projected rates of the U.S. dollar and Yen.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company understands that the scenario presented is
reasonable, given the instability of the Brazilian real against the U.S. dollar and the Yen.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 42 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->40<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 78%; padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 22%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Probable scenario</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(*)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Net currency exposure as of September 30, 2023 in US$ - Liabilities </B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">223,979</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">US$ rate as of September 30, 2023</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">5.0076</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange rate estimated according to the scenario</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 0.5pt solid">5.0400</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Difference between the rates</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(0.0324)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Effect on the net financial result R$ - (loss) </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(7,257)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Net currency exposure as of September 30, 2023 in Yen - Liabilities</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">41,222,733</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Yen rate as of September 30, 2023</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.03351</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange rate estimated according to the scenario</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 0.5pt solid">0.03531</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Difference between the rates</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(0.00180)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Effect on the net financial result R$ - (loss) </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 0.5pt solid">(74,201)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total effect on the net financial result in R$ - (loss) </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 1.5pt double">(81,458)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(*) For the probable scenario in U.S. dollars and Yen, the exchange rates estimated for September 30, 2024 were used, according to the BACEN-Focus report and B3&rsquo;s Benchmark Rate report, of September 30, 2023, respectively.</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>Interest rate risk</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">This risk arises from the possibility that the Company
could incur losses due to fluctuations in interest rates, increasing the financial expenses related to borrowings and financing.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has not entered into any derivative contract
to hedge against this risk; however, it continually monitors market interest rates, to evaluate the possible need to replace its debt.</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The table below provides the borrowings and financing
subject to different monetary restatement indices:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 30%; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 36%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 34%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">CDI (i)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">9,787,811</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">9,251,150</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">TR (ii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,702,160</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,635,587</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">IPCA (iii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,039,157</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,073,435</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">TJLP (iv)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,240,330</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,433,029</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">SOFR (v)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,121,600</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">996,697</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and charges</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">378,369</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">424,856</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">17,269,427</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">16,814,754</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">(i) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CDI - (<I>Certificado
de Dep&oacute;sito Interbanc&aacute;rio</I>), an interbank deposit certificate</P>

<P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">(ii) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TR &ndash;
Interest Benchmark Rate</P>

<P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">(iii) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IPCA -
(<I>&Iacute;ndice Nacional de Pre&ccedil;os ao Consumidor Amplo</I>), a consumer price index</P>

<P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">(iv) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TJLP -
(<I>Taxa de Juros a Longo Prazo</I>), a long-term interest rate index</P>

<P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">(v) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;SOFR - <I>Secured
Overnight Financing Rate</I></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Another risk to which the Company is exposed is the mismatch
of inflation adjustment indices of its debts with those of its service revenues. Tariff adjustments of services provided do not necessarily
follow the increases in the inflation indexes to adjust borrowings, financing and interest rates affecting indebtedness.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, if interest rates on borrowings
and financing had been 1 percentage point higher or lower with all other variables held constant, the effects on profit before taxes for
the nine-month period ended September 30, 2023 would have been R$ 172,694 (R$ 167,090 for the nine-month period ended September 30, 2022),
lower or higher, mainly as a result of lower or higher interest expense on floating rate borrowings and financing.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Frutiger Light; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif"><B>Credit risk</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Credit risk is related to cash and cash equivalents,
financial investments, as well as credit exposures of customers, including accounts receivable, restricted cash, and accounts receivable
from related parties. Credit risk exposure to customers is mitigated by sales to a dispersed base.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The maximum exposure to credit risk as of September 30,
2023, is the carrying amount of instruments classified as cash and cash equivalents, financial investments, restricted cash, trade receivables,
and accounts receivable from related parties on the reporting date of this quarterly information. See Notes 6, 7, 8, 9, and 10.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Regarding the financial assets held with financial institutions,
the credit quality was assessed by reference to external credit ratings (if available) or historical information about the bank&rsquo;s
default rates. For the credit quality of the banks, such as deposits and financial investments, the Company assesses the rating published
by three main international agencies (Fitch, Moody's and S&amp;P), as follows:</P>


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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->42<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 37%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; border-bottom: Black 0.5pt solid"><B>Banks</B></P></TD>
    <TD STYLE="width: 21%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Fitch</B></P></TD>
    <TD STYLE="width: 21%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Moody's</B></P></TD>
    <TD STYLE="width: 21%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Standard Poor's</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Banco do Brasil S/A</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA(bra)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA.br</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Banco Santander Brasil S/A</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA.br</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">brAAA</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Brazilian Federal Savings Bank</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA(bra)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA.br</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">brAAA</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Banco Bradesco S/A</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA(bra)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA.br</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">brAAA</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Banco Ita&uacute; Unibanco S/A</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA(bra)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA.br</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Banco BV</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AA.br</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">brAAA</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Banco BTG Pactual S/A</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA(bra)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AAA.br</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">brAAA</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The rating assessment disclosed by Fitch for deposit
transactions and financial investments in local currency is as follows:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 46%; padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 27%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD STYLE="width: 27%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Cash and cash equivalents and financial investments</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">AA(bra)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,237,629</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">AAA(bra)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,646,612</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,011,685</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Others (*)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">327,844</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">296,044</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">2,974,456</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,545,358</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 62%; padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 38%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Cash and cash equivalents and financial investments</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">AAA(bra)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,647,425</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Others (*)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">327,844</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">2,975,269</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">(*) As of September 30, 2023, this category includes
R$ 314,469 (R$ 289,908 as of December 31, 2022) referring to Banco BV, current accounts, and financial investments, which are not rated
by Fitch.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Frutiger Light; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif"><B>(c)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif"><B>Liquidity risk </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Liquidity is primarily reliant upon cash provided by
operating activities and borrowings and financing obtained in the local and international capital markets, as well as the payment of debts.
The management of this risk considers the assessment of its liquidity requirements to ensure it has sufficient cash to meet its operating
and capital expenditure requirements.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The funds held are invested in interest-bearing current
accounts, time deposits, and securities, with instruments with appropriate maturity or liquidity sufficient to provide margin as determined
by the projections mentioned above.</P>


<!-- Field: Page; Sequence: 45 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->43<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The table below shows the financial liabilities, by maturity,
including the installments of principal and future interest. For agreements with floating interest rates, the interest rates used correspond
to the base date of September 30, 2023.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="7" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 37%; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>October to December
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2024</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 12pt 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2025</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 12pt 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2026</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 12pt 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2027</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2028 onwards</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Total</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%"><B>As of September 30, 2023</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 12pt 5.4pt 1pt; white-space: nowrap; text-align: right; line-height: 110%; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="padding: 12pt 5.4pt 1pt; white-space: nowrap; text-align: right; line-height: 110%; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="padding: 12pt 5.4pt 1pt; white-space: nowrap; text-align: right; line-height: 110%; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 12pt 5.4pt 1pt; white-space: nowrap; text-align: right; line-height: 110%; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Liabilities</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 12pt 5.4pt 1pt; white-space: nowrap; text-align: right; line-height: 110%; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Borrowings and financing</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">867,003</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">3,766,363</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">3,630,034</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">3,263,039</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">3,161,490</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">11,841,766</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">26,529,695</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Trade payables and contractors</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">518,199</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">518,199</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Services payable</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">756,547</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">756,547</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">174,758</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">459,931</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">419,446</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">419,446</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">419,446</FONT></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">3,636,001</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">5,529,028</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Program Contract Commitments</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 0.5pt solid; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">24,838</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 0.5pt solid; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">1,208</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 0.5pt solid; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">1,208</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 0.5pt solid; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">1,208</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 0.5pt solid; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">1,208</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 0.5pt solid; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">12,692</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 0.5pt solid; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">42,362</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 1.5pt double; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">2,341,345</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 1.5pt double; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">4,227,502</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 1.5pt double; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">4,050,688</P></TD>
    <TD STYLE="padding-right: 5.4pt; border-bottom: Black 1.5pt double; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,683,693</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 1.5pt double; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">3,582,144</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 1.5pt double; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">15,490,459</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="border-bottom: Black 1.5pt double; font: 8pt/110% Georgia, Times, Serif; margin: 0pt 2.85pt 1pt; text-align: right">33,375,831</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Cross default</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has borrowings and financing agreements including
cross-default clauses, i.e., the early maturity of any debt may imply the early maturity of these agreements. The indicators are continuously
monitored to avoid the execution of these clauses, and the most restrictive ones are shown in Note 16 (c).</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Frutiger Light; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif"><B>(d)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif"><B>Sensitivity analysis on interest rate risk</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The table below shows the sensitivity analysis of the
financial instruments, prepared under CPC 40 (R1). To evidence the balances of main financial assets and liabilities, calculated at a
rate projected for the twelve-month period after September 30, 2023, or until the final settlement of each contract, whichever occurs
first, considering a probable scenario.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The purpose of the sensitivity analysis is to measure
the impact of changes in the market on the financial instruments, considering constant all other variables. At the time of settlement,
the amounts may be different from those presented, due to the estimates used in the measurement.</P>


<!-- Field: Page; Sequence: 46 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->44<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="3" STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="3" STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 44%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; border-bottom: Black 0.5pt solid"><B>Indicators</B></P></TD>
    <TD STYLE="width: 28%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Exposure</B></P></TD>
    <TD STYLE="width: 28%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Probable scenario</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Assets</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">CDI</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,393,499</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11.0600%(**)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial income</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">154,121</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Liabilities</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">CDI </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(9,787,811)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11.0600%(**)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest to be incurred</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,082,532)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
<!-- Field: Rule-Page --><DIV STYLE="margin-top: 1pt; margin-bottom: 1pt; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 0.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page --></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
<!-- Field: Rule-Page --><DIV STYLE="margin-top: 1pt; margin-bottom: 1pt; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 0.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page --></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">CDI net exposure</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(8,394,312)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(928,411)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Liabilities</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">TR</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,702,160)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.0056%(**)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Expenses to be incurred </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(95)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">IPCA</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(3,039,157)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3.9500%(*)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Expenses to be incurred </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(120,047)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">TJLP</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,240,330)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">6.5800%(*)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest to be incurred</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(81,614)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">SOFR (***) </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,121,600)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">5.4481%(**)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest to be incurred</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(61,106)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
<!-- Field: Rule-Page --><DIV STYLE="margin-top: 1pt; margin-bottom: 1pt; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 0.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page --></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total expenses to be incurred, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(1,191,273)</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="3" STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(*)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Source: BACEN as of September 30, 2023 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="3" STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(**)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Source: B3 as of September 30, 2023</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="3" STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(***)&nbsp;&nbsp;&nbsp;Source: Bloomberg</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 47 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->45<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>4.2</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Capital management </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company&rsquo;s objectives when managing capital
are to ensure the Company&rsquo;s ability to continue increasing investments in infrastructure, provide returns for shareholders and benefits
for other stakeholders, and maintain an optimal capital structure to reduce the cost of capital.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Capital is monitored based on the leverage ratio, which
corresponds to net debt divided by total capital (shareholders and providers of capital). Net debt corresponds to total borrowings and
financing less cash and cash equivalents and financial investments. Total capital is calculated as total equity plus net debt, as shown
in the statement of financial position.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; text-align: justify">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 48%; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 26%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 26%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"><B>&nbsp;</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"><B>&nbsp;</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total borrowings and financing (Note 16)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">19,002,890</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">18,958,671</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(-) Cash and cash equivalents (Note 6)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,592,888)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,867,485)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(-) Financial investments (Note 7)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">(1,381,568)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">(1,677,873)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Net debt</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">16,028,434</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">15,413,313</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total equity</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">29,593,856</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">27,333,533</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total (shareholders plus providers of capital)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">45,622,290</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">42,746,846</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Leverage ratio</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">35%</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">36%</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 65%; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 35%">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"><B>&nbsp;</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total borrowings and financing (Note 16)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">19,002,890</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(-) Cash and cash equivalents (Note 6)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,593,701)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(-) Financial investments (Note 7)</FONT></TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">(1,381,568)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Net debt</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">16,027,621</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total equity</FONT></TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">29,593,856</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total (shareholders plus providers of capital)</FONT></TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">45,621,477</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Leverage ratio</FONT></TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">35%</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 48 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->46<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>4.3</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Fair value estimates</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company considers that balances from trade receivables
(current) and trade payables by carrying amount less impairment approximate their fair values, considering the short maturity. Long-term
trade receivables also approximate their fair values, as they are adjusted by inflation and/or will bear contractual interest rates over
time.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>4.4</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Financial instruments</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company did not have financial assets classified
as fair value through other comprehensive income and fair value through profit or loss. The financial instruments included in the amortized
cost category comprise cash and cash equivalents, financial investments, restricted cash, trade receivables, balances with related parties,
other assets and balances receivable from the Water National Agency (ANA), accounts payable to suppliers, borrowings and financing, services
payable, balances payable deriving from the Public-Private Partnership (PPP) and program contract commitments, which are non-derivative
financial assets and liabilities with fixed or determinable payments, not quoted in an active market, except for cash equivalents and
financial investments.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The estimated fair values of the financial instruments
are as follows:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Financial Assets</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="4" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 40%; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Carrying amount</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Fair value</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Carrying amount</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Fair value</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Cash and cash equivalents</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,592,888</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,592,888</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,867,485</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,867,485</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Financial investments</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,381,568</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,381,568</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,677,873</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,677,873</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Restricted cash</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">53,736</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">53,736</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">37,474</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">37,474</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Trade receivables</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,608,357</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,608,357</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,277,808</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,277,808</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;ANA </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,463</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,463</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">9,193</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">9,193</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Other assets </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">317,008</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">317,008</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">212,674</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">212,674</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 56%; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 22%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Carrying amount</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 22%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Fair value</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Cash and cash equivalents</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,593,701</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,593,701</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Financial investments</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,381,568</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,381,568</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Restricted cash</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">53,736</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">53,736</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Trade receivables</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,608,357</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,608,357</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;ANA </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,463</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,463</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Other assets </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">240,929</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">240,929</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 49 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->47<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Additionally, SABESP has financial assets receivable
from related parties, totaling R$ 1,173,844 as of September 30, 2023 (R$ 1,156,743 as of December 31, 2022), which were calculated under
the conditions negotiated between the related parties. The conditions and additional information related to these financial instruments
are disclosed in Note 10. Part of this balance, totaling R$ 1,061,590 (R$ 1,060,040 as of December 31, 2022), refers to reimbursement
of additional retirement and pension plan - G0, indexed by IPCA plus simple interest of 0.5% p.m. On the transaction date, this interest
rate approximated that of National Treasury Notes (NTN-b), with a term similar to the terms of related-party transactions.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Financial Liabilities</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 40%; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Carrying amount</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Fair value</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Carrying amount</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Fair value</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Borrowings and financing</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">19,002,890</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">19,417,893</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">18,958,671</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">19,260,133</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Trade payables and contractors</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">518,199</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">518,199</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">430,946</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">430,946</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Services payable</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">756,547</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">756,547</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">723,242</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">723,242</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Program Contract Commitment</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">38,230</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">38,230</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">112,385</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">112,385</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">2,822,949</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">2,822,949</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">2,959,181</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">2,959,181</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The criteria adopted to obtain the fair values of borrowings
and financing, in preparing the quarterly information as of September 30, 2023, are consistent with those used in the preparation of the
Annual Financial Statements for the fiscal year ended December 31, 2022.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 28.35pt; text-align: justify; text-indent: -19.85pt">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Financial instruments referring to financial investments
and borrowings and financing are classified as Level 2 in the fair value hierarchy.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Considering the nature of other financial instruments,
assets and liabilities, the balances recognized in the statement of financial position approximate the fair values, except for borrowings
and financing, considering the maturities close to the end of the reporting date of this quarterly information, comparison of contractual
interest rates with market rates in similar operations at the end of the reporting period, their nature, and maturity terms.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>5</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Key accounting estimates and judgments</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The preparation of the quarterly information requires
Management to disclose judgments (except for those that involve estimates) that have a significant impact on the amounts recognized based
on experience and other factors deemed as relevant, which affect the values of assets and liabilities and present results that may differ
from the actual results.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company establishes estimates and assumptions regarding
the future, which are reviewed on a timely basis. Such accounting estimates, by definition, may differ from the actual results. The effects
arising from the reviews of the accounting estimates are recognized in the period in which the estimates are reviewed.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company assessed the main accounting policies that
involve judgments, except for those that involve estimates, and concluded that none of them have a significant effect.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 50 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->48<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The areas that require a higher level of judgment and
greater complexity, as well as assumptions and estimates that are significant for the quarterly information, are: (i) allowance for doubtful
accounts; (ii) intangible assets arising from concession agreements and program contracts; (iii) pension plan obligations; (iv) deferred
income tax and social contribution; (v) provisions; and (vi) unbilled revenue.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.1pt">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>6</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Cash and cash equivalents</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 38%; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 31%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 31%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Cash and banks</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">60,444</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">139,844</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Cash equivalents</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,532,444</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,727,641</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,592,888</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,867,485</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 55%; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 45%">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Cash and banks</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">60,445</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Cash equivalents</FONT></TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,533,256</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total</FONT></TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,593,701</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Cash and cash equivalents include cash, bank deposits,
and high-liquidity short-term financial investments, mainly represented by repurchase agreements, fund shares (accruing CDI interest rates),
and CDBs, whose original maturities or intention of realization are lower than three months, which are convertible into a cash amount
and subject to an insignificant risk of change in value.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, the average yield of cash equivalents
corresponded to 99.60% of CDI (95.69% as of December 31, 2022).</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 51 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->49<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>7</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Financial investments</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has financial investments in CDB, with daily
liquidity, which it does not intend to use in the next three months, as shown below:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 44%; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 28%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="width: 28%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Banco BV </FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">314,468</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">289,909</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Banco Ita&uacute; Unibanco S/A </FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">403,732</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Banco Bradesco S/A </FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">627,680</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">578,752</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Banco BTG Pactual S/A </FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">438,207</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">404,363</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Banco do Brasil S/A </FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,213</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,117</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,381,568</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,677,873</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">As of September 30, 2023, the average yield of the financial investments corresponded
to 103.30% of CDI (102.90% as of December 31, 2022).</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>8</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Restricted cash</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 46%; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 27%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 27%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Agreement with the S&atilde;o Paulo Municipal Government (i)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">46,115</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">30,231</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Brazilian Federal Savings Bank &ndash; escrow deposits</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">932</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">433</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,689</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,810</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">53,736</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">37,474</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 19.85pt">(i)</TD><TD STYLE="text-align: justify">Refers to the amount deducted from the transfer of 7.5% of the revenue earned in the municipality to the
Municipal Fund for Environmental Sanitation and Infrastructure, corresponding to eventual amounts unpaid by direct management bodies,
foundations and government agencies, as established in the agreement entered into with S&atilde;o Paulo Municipal Government (PMSP).</TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->50<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Frutiger Light; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>9</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Trade receivables </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><B>(a)</B></TD><TD STYLE="text-align: justify"><B>Statement of financial position details</B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 48%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 26%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="width: 26%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Private sector:</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">General (i) and special customers (ii) </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,228,510</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,287,782</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Agreements (iii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">804,224</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">416,550</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,032,734</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,704,332</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Government entities:</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Municipal</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">660,149</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">609,731</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Federal</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">7,372</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">10,644</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Agreements (iii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">325,284</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">372,943</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">992,805</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">993,318</P></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Wholesale customers &ndash; Municipal governments: (iv)</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Mogi das Cruzes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">4,548</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">4,048</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">S&atilde;o Caetano do Sul</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">49,958</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">45,367</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total wholesale customers &ndash; Municipal governments</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">54,506</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">49,415</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Unbilled supply</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,017,680</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">959,260</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Subtotal</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">5,097,725</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">4,706,325</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Allowance for doubtful accounts</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,489,368)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,428,517)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,608,357</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,277,808</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Current</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,393,831</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,062,574</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Noncurrent</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">214,526</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">215,234</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,608,357</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,277,808</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt">&nbsp;</P>


<!-- Field: Page; Sequence: 53 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->51<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 28.35pt">(i)</TD><TD STYLE="text-align: justify">General customers - residential and small and mid-sized companies;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 28.35pt">(ii)</TD><TD STYLE="text-align: justify">Special customers &ndash; large consumers, commercial industries, condominiums and special billing customers
(fixed demand agreements, industrial waste, wells, among others);</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 28.35pt">(iii)</TD><TD STYLE="text-align: justify">Agreements - installment payments of past-due receivables, plus inflation adjustment and interest, according
to the agreements; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 28.35pt">(iv)</TD><TD STYLE="text-align: justify">Wholesale basis customers - municipal governments. This balance refers to the sale of treated water to
municipalities, which are responsible for distributing to, billing, and charging final customers.</TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><B>(b)</B></TD><TD STYLE="text-align: justify"><B>The aging of trade receivables is as follows:</B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.1pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 38%; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 31%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 31%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Current</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,536,687</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,244,754</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Past-due:</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Up to 30 days</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">552,255</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">489,709</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">From 31 to 60 days</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">260,822</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">248,128</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">From 61 to 90 days</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">176,230</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">165,306</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">From 91 to 120 days</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">162,640</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">150,941</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">From 121 to 180 days</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">313,157</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">281,530</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">From 181 to 360 days</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">71,787</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">58,702</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Over 360 days</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,024,147</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,067,255</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; font-family: Times New Roman, Times, Serif; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; font-family: Times New Roman, Times, Serif; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total past-due</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,561,038</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,461,571</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">5,097,725</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,706,325</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><B>(c)</B></TD><TD STYLE="text-align: justify"><B>Allowance for doubtful accounts </B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 48%; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 26%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 26%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Changes in assets</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Balance at the beginning of the period</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,428,517</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,280,088</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Creation/(reversal) of losses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">108,351</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(18,774)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Recoveries </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(47,500)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(39,906)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Balance at the end of the period</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,489,368</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,221,408</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 54 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->52<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 44%; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Reconciliation of estimated/historical losses at the result</B></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; width: 14%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>July to September
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 14%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 14%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>July to September
    2022</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 14%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Write-offs</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(142,675)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(474,108)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(193,831)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(628,271)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(Losses)/reversal with state entities &ndash; related parties </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,368)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,936)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">4,772</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,143</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(Losses)/reversal with the private sector/government entities</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(30,680)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(108,351)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">42,171</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">18,774</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Recoveries</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">18,059</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">47,500</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">11,066</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">39,906</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Amount recorded as expense (Note 27)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(156,664)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(536,895)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(135,822)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(566,448)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company does not have customers individually representing
10% or more of its total revenues.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, the Company has registered
warrants issued in its favor, currently totaling R$ 2,875,393 (R$ 2,807,318 as of December 31, 2022), which are not recognized in the
Financial Statements because of the difficulty in obtaining a reasonable estimate to measure such assets, due to uncertainties related
to the beginning and end of their realization. <FONT STYLE="background-color: white">Register warrants are recognized upon the beginning
of their receipt or when they are traded.</FONT></P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; background-color: white; border-collapse: collapse">
  <TR>
    <TD STYLE="width: 50%; padding-right: 5.65pt; padding-left: 3.5pt; text-align: center; line-height: 12.1pt">&nbsp;</TD>
    <TD STYLE="width: 25%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD STYLE="vertical-align: bottom; width: 25%">
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Debtor</B></P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD>
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.65pt; padding-left: 3.5pt; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Municipality of S&atilde;o Paulo</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 3.5pt; text-align: right; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">2,720,922</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">2,656,113</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.65pt; padding-left: 3.5pt; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Municipality of Cotia</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 3.5pt; text-align: right; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">105,845</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">103,729</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.65pt; padding-left: 3.5pt; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Municipality of Cachoeira Paulista</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 3.5pt; text-align: right; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">15,018</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">13,672</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.65pt; padding-left: 3.5pt; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 0.5pt solid">33,608</P></TD>
    <TD>
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 0.5pt solid">33,804</P></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.65pt; padding-left: 3.5pt; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 1.5pt double">2,875,393</P></TD>
    <TD>
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 1.5pt double">2,807,318</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 55 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->53<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>10</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Related-party balances and transactions</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>S&atilde;o Paulo State</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 64.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(i)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Accounts receivable, interest on
capital, revenue, and expenses </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 54%; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 22%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 24%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Accounts receivable</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Current:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Sanitation services </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">162,424</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">144,937</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Allowance for losses </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(51,531)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(49,595)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Reimbursement of additional retirement and pension benefits paid (G0):</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;- Monthly flow</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">18,414</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">13,376</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;- GESP Agreement &ndash; 2015</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">103,490</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">97,075</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total current</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">232,797</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">205,793</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Noncurrent:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Agreement for the installment payment of sanitation services</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,361</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,361</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Reimbursement of additional retirement and pension benefits paid (G0):</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify">&#9;<FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;- GESP Agreement &ndash; 2015 </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">939,686</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">949,589</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total noncurrent</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">941,047</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">950,950</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total receivables </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,173,844</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,156,743</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Assets:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Sanitation services</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">112,254</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">96,703</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Reimbursement of additional retirement and pension benefits paid (G0)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,061,590</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,060,040</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,173,844</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,156,743</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Liabilities:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Interest on capital payable </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">372,550</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD COLSPAN="2">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 36%; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 16%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 0in; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>July to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 16%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 0in; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>January to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 16%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 0in; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>July to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2022</B></P>
</DIV></TD>
    <TD STYLE="width: 16%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 0in; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>January to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2022</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Revenue from sanitation services</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">203,859</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">565,640</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">175,324</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">483,127</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Payments from related parties</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(197,895)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(541,084)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(175,477)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(457,488)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 10pt Verdana, Helvetica, Sans-Serif; padding-bottom: 1pt; padding-left: 14.2pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 10pt Verdana, Helvetica, Sans-Serif; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Payment received from reimbursement referring to Law 4,819/1958</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(42,713)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(146,665)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(38,473)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(119,885)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 64.4pt; text-align: justify"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 64.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(ii)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Disputed amounts</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023 and December 31, 2022, the disputed
amounts between SABESP and the S&atilde;o Paulo State, referring to additional retirement and pension benefits paid (Law 4,819/1958),
totaled R$&nbsp;1,552,968 and R$&nbsp;1,482,140, respectively, for which allowances for doubtful accounts were created for the total amount.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 64.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(iii)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Actuarial Liability</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company recognized an actuarial liability corresponding
to additional retirement and pension benefits paid to employees, retired employees, and pensioners of the G0 Plan. As of September 30,
2023, and December 31, 2022, the amounts corresponding to the actuarial liability totaled R$ 2,022,750 and R$ 2,002,075, respectively.
For detailed information on additional retirement and pension benefits, see Note 21.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Use of Reservoirs &ndash; EMAE</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Empresa Metropolitana de &Aacute;guas e Energia S.A.
(EMAE) planned to receive the credit and obtain financial compensation for alleged past and future losses in electricity generation arising
from water collection, and compensation for costs already incurred and to be incurred with the operation, maintenance, and inspection
of the Guarapiranga and Billings reservoirs used by SABESP in its operations.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of October 28, 2016, the Company entered into an agreement
based on a Private Transaction Agreement and Other Covenants to fully and completely settle the disputes and SABESP will continue using
the reservoirs.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, the balance of the agreement
totaled R$ 9,265 and R$ 105,439 (R$ 8,456 and R$ 95,033 as of December 31, 2022), recorded in Other liabilities, under current and noncurrent
liabilities, respectively.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(c)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Agreements with reduced tariffs for
State Entities that join the Rational Water Use Program (PURA) </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has agreements with government entities related
to the S&atilde;o Paulo State Government that benefit them with a 25% discount on water supply and sewage services tariffs when they are
not in default. These agreements provide for the implementation of the rational water use program, which provides for water consumption
reduction.</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(d)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Guarantees</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The S&atilde;o Paulo State provides guarantees for some
of the Company&rsquo;s borrowings and financing and does not charge any related fees. See Note 16.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(e)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Personnel assignment agreement among
entities related to the S&atilde;o Paulo State Government</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has personnel assignment agreements with
entities related to the State Government, whose expenses are fully charged.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">From July to September and from January to September
2023, expenses with employees assigned to other state entities totaled R$ 2,404 and R$ 5,001 (R$ 240 and R$ 581 from July to September
and from January to September 2022), respectively.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">No expenses with employees from other entities assigned
to the Company were recorded from July to September and from January to September 2023 and in the same periods in 2022.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(f)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Non-operating assets</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023 and December 31, 2022, the Company&rsquo;s
land and lent structures totaled R$ 3,613.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(g)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>SABESPREV </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company sponsors a defined benefit plan (G1 Plan),
which is operated and administered by SABESPREV. The net actuarial liability recognized until September 30, 2023, totaled R$ 104,168 (R$
148,116 as of December 31, 2022). See Note 21.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(h)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Compensation of the Fiscal Council
and Management </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">From July to September and from January to September
2023, expenses related to the compensation of the Fiscal Council members appointed by the Controlling Shareholder and Management members
totaled R$&nbsp;2,320 and R$&nbsp;6,110 (R$&nbsp;1,468 and R$&nbsp;4,675 from July to September and from January to September 2022), respectively.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">From July to September and from January to September
2023, additional amounts of R$&nbsp;430 and R$&nbsp;1,299 were recorded (from July to September and from January to September 2022, the
amounts totaled R$&nbsp;265 and R$&nbsp;1,005), respectively, referring to the executive officers&rsquo; bonus program.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(i)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Loan agreement through credit facility</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company holds interest in certain Special Purpose
Entities (SPEs), in which it does not hold the majority interest but has cast vote and power of veto in some matters but cannot use such
power of veto in a way to affect the returns of its investments. Therefore, these SPEs are considered for accounting purposes as joint
arrangements.</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>Aquapolo Ambiental</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company entered into a loan agreement through a credit
facility with SPE Aquapolo Ambiental S/A to finance the operations of that company, until the borrowings and financing requested with
financial institutions are granted.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The loan originally matured on April 30, 2015, but was
extended to October 30, 2015. On November 25, 2015, a new amendment changed the payment schedule for three annual installments, the first
of which matured on December 30, 2021, and the last will mature on December 30, 2023.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">This agreement was settled on July 21, 2023, upon the receipt of R$&nbsp;1,533.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&Aacute;guas de Andradina</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company entered into a loan agreement through a credit
facility with SPE &Aacute;guas de Andradina S/A to finance the operations of that company.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, the balance of principal and
interest of this agreement totaled R$ 573 and R$ 2,814, which was recorded in &ldquo;Other assets&rdquo; under current and noncurrent
assets (R$ 242 and R$ 2,814, respectively, as of December 31, 2022), at CDI + 3% p.a.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">This agreement was executed on August 17, 2021. The amount
of principal, adjustment, accrued interest, and any other taxes must be paid in full by August 31, 2025.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>Sabesp Ol&iacute;mpia</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company formalized a loan agreement through a credit
facility with Sabesp Ol&iacute;mpia S/A, making available the necessary funds for the payment of the first installment of the Fixed Concession
Fee to the Municipality of Est&acirc;ncia Tur&iacute;stica de Ol&iacute;mpia, which is a prerequisite for the signing of the water and
sewage concession agreement.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, the balance of principal and
interest of this agreement totaled R$ 76,079, which was recorded in &ldquo;Other assets&rdquo; under noncurrent assets, at CDI + 2% p.a.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">This agreement was executed on September 26, 2023. The
principal and the accumulated interest on the principal must be fully repaid by September 2040.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(j)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>FEHIDRO</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has financing agreements under the State
Fund for Water Resources (FEHIDRO). These funds will be aimed at the execution of works and sewage services. As of September 30, 2023,
the balance of these financings totaled R$ 3,380 (R$ 5,108 as of December 31, 2022).</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>11</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Investments</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company holds interest in certain Special Purpose
Entities (SPE). Although SABESP has no majority shares of its investees, the shareholders&rsquo; agreement provides for the power of veto
in certain management matters, however, it cannot use such power of veto in a way to affect the returns over the investments, implying
a mutually shared control (joint venture &ndash; CPC 19 (R2)).</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company holds equity interest valued by the equity
accounting in the following investees:</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Equity</B></P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Contribution</B></P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Dividends distributed</B></P></TD>
    <TD COLSPAN="3" STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Profit (loss) for
    the period</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 35%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September</B></P>
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center"><B>30,</B></P>
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center"><B>December</B></P>
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center"><B>31,</B></P>
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September</B></P>
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>2023</B></P></TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September</B></P>
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>2023</B></P></TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>(*)</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September</B></P>
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Sesamm</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">61,963</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">59,371</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(13,516)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">16,108</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">9,519</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">&Aacute;guas de Andradina</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">33,023</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">30,777</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">2,246</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">882</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">&Aacute;guas de Castilho</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">12,336</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">10,787</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,549</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">998</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Attend Ambiental</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">43,624</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">29,729</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">13,895</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">6,278</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Aquapolo Ambiental</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">100,736</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">73,926</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">26,810</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">21,991</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Paulista Geradora de Energia - PGE (**)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">32,975</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">10,486</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">23,633</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(1,144)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(575)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Cantareira SP Energia (***)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">504</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,000</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(496)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">FOXX URE-BA Ambiental</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">64,116</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">69,258</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">4,325</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(879)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(8,588)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Infranext Solu&ccedil;&otilde;es em Pavimenta&ccedil;&atilde;o (****)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">5,244</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">7,050</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(1,806)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Sabesp Ol&iacute;mpia</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(1,265)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">811</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(2,076)</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding: 0.2pt 5.4pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(*)&#9;The amount presented refers to changes in
the equity of the investee, as its financial statements for the year ended December 31, 2022 were issued after the disclosure of SABESP&rsquo;s
financial statements.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(**)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
October 2022, it was agreed at the Extraordinary Meeting a capital contribution of R$&nbsp;20,310 thousand, and SABESP paid R$&nbsp;5,077
in December 2022, corresponding to 25%. Servtec and Tecniplan paid R$&nbsp;15,233 in June 2023, corresponding to 75%. In 2023, a contribution
of R$&nbsp;20,600 was defined, which will be paid-up by December 2023, according to the interest held by each company. Servtec and Tecniplan
have already paid R$&nbsp;8,400 of this amount.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(***)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sabesp&rsquo;s
contribution of R$ 5,439 in January 2023, was reclassified into noncurrent assets, under other receivables.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">(****)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Infranext&rsquo;s share capital
will be R$&nbsp;12,000. As of September 30, 2023, SABESP had an outstanding payable amount of R$&nbsp;4,950.</P>


<!-- Field: Page; Sequence: 60 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->58<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="10" STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Investments</B></P></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Contribution</B></P></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Dividends distributed</B></P></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Reclassification (***)</B></P></TD>
    <TD COLSPAN="3" STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Equity accounting</B></P></TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Interest percentage</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; width: 22%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>30,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>December 31,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 10%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>(*)</B></P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>30,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>December</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>31,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Sesamm</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">22,307</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">21,374</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 4pt 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(4,866)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">5,799</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,427</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">36%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">36%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">&Aacute;guas de Andradina </FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">9,906</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">9,233</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 4pt 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">673</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">265</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">30%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">30%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">&Aacute;guas de Castilho</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">3,701</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">3,236</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 4pt 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">465</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">299</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">30%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">30%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Attend Ambiental</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">19,632</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">13,379</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 4pt 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">6,253</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,825</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">45%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">45%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Aquapolo Ambiental</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49,360</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">36,223</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 4pt 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">13,137</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">10,776</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Paulista Geradora de Energia</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">6,143</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">6,429</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 4pt 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(286)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(144)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">25%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">25%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Cantareira SP Energia</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">247</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">490</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 4pt 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(243)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">FOXX URE-BA Ambiental</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">12,824</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">13,852</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">865</FONT></TD>
    <TD STYLE="padding: 2.4pt 4pt 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(176)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(1,717)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">20%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">20%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Infranext Solu&ccedil;&otilde;es em Pavimenta&ccedil;&atilde;o </FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">450</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 4pt 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">363</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(813)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">45%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">45%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Sabesp Ol&iacute;mpia</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">811</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,265</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(2,076)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">100%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Total</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: top; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">124,120</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">104,666</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">1,676</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(4,866)</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">1,628</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">22,733</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(1,717)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.6 1pt 3.5; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">17,448</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">&nbsp;</P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">FOXX URE-BA Ambiental &ndash; Fair value (**)</P></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">26,148</FONT></TD>
    <TD STYLE="padding-right: 3.5; white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Other investments </FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,099</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,099</P></TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">&nbsp;</P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">Overall total</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 2.25pt double">156,367</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 2.25pt double">110,765</P></TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(*)&#9;Refers to changes in the equity of investees,
as their financial statements for the year ended December 31, 2022 were issued after the disclosure of SABESP&rsquo;s financial statements.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(**)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
amount presented refers to the fair value adjustment in the acquisition of FOXX URE-BA in 2022.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(***)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
amount of the investee&rsquo;s loss exceeding the investment was reclassified to Noncurrent Liabilities.</P>


<!-- Field: Page; Sequence: 61 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->59<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="10" STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Investments</B></P></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Contribution</B></P></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Dividends distributed</B></P></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Reclassification (***)</B></P></TD>
    <TD COLSPAN="3" STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Equity accounting</B></P></TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Interest percentage</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; width: 22%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>30,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>December 31,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 10%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>(*)</B></P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>30,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>December</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>31,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Sesamm</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">22,307</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">21,374</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(4,866)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">5,799</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">3,427</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">36%</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">36%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">&Aacute;guas de Andradina </FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">9,906</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">9,233</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">673</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">265</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">30%</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">30%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">&Aacute;guas de Castilho</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">3,701</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">3,236</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">465</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">299</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">30%</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">30%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Attend Ambiental</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">19,632</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">13,379</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">6,253</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">2,825</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">45%</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">45%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Aquapolo Ambiental</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49,360</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">36,223</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">13,137</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">10,776</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49%</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Paulista Geradora de Energia</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">6,143</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">6,429</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">286</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(144)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">25%</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">25%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Cantareira SP Energia</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">247</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">490</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(243)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49%</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">49%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">FOXX URE-BA Ambiental</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">12,824</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">13,852</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">865</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(176)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(1,717)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">20%</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">20%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Infranext Solu&ccedil;&otilde;es em Pavimenta&ccedil;&atilde;o </FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">450</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">363</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(813)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">45%</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">45%</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Total</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">124,120</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">104,666</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">865</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(4,866)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">363</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">24,809</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">(1,717)</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">17,448</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">&nbsp;</P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">FOXX URE-BA Ambiental &ndash; Fair value (**)</P></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">26,148</FONT></TD>
    <TD STYLE="padding: 2.4pt 3.5pt 1pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">-</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt">Other investments </FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,099</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,099</P></TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">&nbsp;</P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">Overall total</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 2.25pt double">156,367</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 2.25pt double">110,765</P></TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(*)&#9;Refers to changes in the equity of investees,
as their financial statements for the year ended December 31, 2022 were issued after the disclosure of SABESP&rsquo;s financial statements.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(**)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
amount presented refers to the fair value adjustment in the acquisition of FOXX URE-BA in 2022.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(***)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
amount of the investee&rsquo;s loss exceeding the investment was reclassified to Noncurrent Liabilities.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>12</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Investment Properties</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 30%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 26%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD>
    <TD STYLE="width: 18%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Depreciation</B></P></TD>
    <TD STYLE="width: 26%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 12pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 12pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 12pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 12pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 12pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Investment properties</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/12pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">46,726</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/12pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(36)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/12pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">46,690</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/12pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 62 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->60<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 30%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 26%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2021</B></P></TD>
    <TD STYLE="width: 18%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Depreciation</B></P></TD>
    <TD STYLE="width: 26%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 12pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 12pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 12pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 12pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 12pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Investment properties</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 12pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">46,126</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 12pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(36)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 12pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">46,090</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, the market value of these properties
was approximately R$ 393,600 (R$ 386,000 as of December 31, 2022).</P>

<P STYLE="font: 10pt/12pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>13</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Contract asset</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="5" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 25%; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 14%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Additions (i)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 14%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfers</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 17%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfers of works
    to intangible assets (ii)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023
    (iii)</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Total contract asset</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">8,613,968</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,734,020</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">384</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(4,458,416)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">7,889,956</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="5" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 25%; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2021</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 14%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Additions</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 14%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfers</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 17%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfers of works
    to intangible assets</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2022</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Total contract asset</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">8,550,102</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,559,587</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,001</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(3,322,568)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">8,788,122</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 42.55pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt; letter-spacing: -0.05pt">(i)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">The largest additions in the period
are located in the municipalities of S&atilde;o Paulo, Guarulhos, and Itanha&eacute;m, totaling R$ 1,468 million, R$ 230 million, and
R$ 113 million, respectively. </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 42.55pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">(ii)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">The largest transfers of the period
are located in the municipalities of S&atilde;o Paulo, Franca, and S&atilde;o Bernardo do Campo, totaling R$ 2,069 million, R$ 311 million,
and R$ 199 million, respectively.</FONT></TD></TR></TABLE>

<P STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin: 0 0 0 42.55pt; text-align: justify; text-indent: -42.55pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">(iii)</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 7pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">The largest works are located in the municipalities of S&atilde;o
Paulo, Francisco Morato, and Itanha&eacute;m, totaling R$ 2,228 million, R$ 245 million, and R$ 211 million, respectively.</FONT></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, <FONT STYLE="background-color: white">the
contract asset did not include any amounts recorded </FONT>as a lease (R$&nbsp;276,893 as of December 31, 2022).</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Capitalization of interest and other
finance charges</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company capitalizes interest, inflation adjustments,
and exchange rate changes in the contract asset during the construction period. From January to September 2023, the Company capitalized
R$&nbsp;499,614 (R$&nbsp;458,786 from January to September 2022).</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Construction margin</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company is primarily responsible for the construction
and installation of the concession infrastructure, either by using its employees or contracting third parties, and is significantly exposed
to its risks and benefits. Accordingly, the Company recognizes revenue from construction services corresponding to construction costs
increased by gross margin.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Constructions related to the concessions are usually
performed by third parties. In such a case, the margin is lower to cover administration costs and the assumption of responsibility for
primary risks. As of September 30, 2023 and 2022, the margin was 2.3%.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">From July to September and from January to September
2023, the construction margins were R$&nbsp;29,657 and R$&nbsp;84,577 (R$&nbsp;30,357 and R$&nbsp;76,289 from July to September and from
January to September 2022), respectively.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(c)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Expropriations </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt">As a result of the construction
of priority projects related to water and sewage systems, the Company is required to expropriate third-party properties, whose owners
are compensated either amicably or through court.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The costs of such expropriations are recorded in the
contract asset during the execution of the works. From July to September and from January to September 2023, expropriations totaled R$&nbsp;3,336
and R$&nbsp;48,059 (R$&nbsp;1,995 and R$&nbsp;49,017 from July to September and from January to September 2022), respectively.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>14</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Intangible assets</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Statement of financial position details</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="6" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 39%; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Cost</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Accumulated
    amortization</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 10%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Net</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Cost</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Accumulated
    amortization</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 10%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Net</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Intangible right arising from:</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Concession agreements &ndash; equity value</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">739,325</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(236,723)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">502,602</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">722,730</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(223,404)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">499,326</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Concession agreements &ndash; economic value </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,633,689</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(1,013,003)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">620,686</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,585,271</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(933,232)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">652,039</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Program contracts </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">28,981,405</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(9,299,819)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">19,681,586</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">26,875,408</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(8,537,949)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">18,337,459</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Program contracts &ndash; commitments </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,709,757</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(484,490)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,225,267</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,709,757</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(444,765)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,264,992</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Service contracts &ndash; S&atilde;o Paulo</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">27,744,119</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(8,618,064)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">19,126,055</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">25,584,703</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(7,714,252)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">17,870,451</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Software license of use</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,287,520</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(755,389)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">532,131</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,249,881</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(654,477)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">595,404</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Right of use &ndash; Other assets</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">217,258</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(80,137)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">137,121</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">170,921</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(95,869)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">75,052</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Right of use &ndash; Investments</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">26,148</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">26,148</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">62,313,073</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(20,487,625)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">41,825,448</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">57,924,819</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(18,603,948)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">39,320,871</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 64 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->62<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 54%; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 14%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Cost</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 17%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Accumulated
    amortization</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Net</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Intangible right arising from:</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Concession agreements &ndash; equity value</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">739,325</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(236,723)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">502,602</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Concession agreements &ndash; economic value </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,633,689</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(1,013,003)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">620,686</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Concession agreements &ndash; new contracts</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">148,000</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">148,000</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Program contracts </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">28,981,405</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(9,299,819)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">19,681,586</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Program contracts &ndash; commitments </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,709,757</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(484,490)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,225,267</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Service contracts &ndash; S&atilde;o Paulo</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">27,744,119</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(8,618,064)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">19,126,055</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Software license of use</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,287,520</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(755,389)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">532,131</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Right of use &ndash; Other assets</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">217,258</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(80,137)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">137,121</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">62,461,073</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(20,487,625)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">41,973,448</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Changes</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="7" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 23%; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>December </B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>31, </B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="width: 10%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Additions</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfer of contract
    asset</B></P></TD>
    <TD STYLE="width: 12%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfers </B></P></TD>
    <TD STYLE="white-space: nowrap; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Write-offs and disposals</B></P></TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Amortization</B></P></TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>30,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Intangible right arising from: </FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Concession agreements &ndash; equity value (*)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">499,326</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">4</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">19,161</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(925)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(299)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(14,665)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">502,602</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Concession agreements &ndash; economic value&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">652,039</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">3</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">63,182</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">62</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(120)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(94,480)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">620,686</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 3pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Program contracts (*)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 3pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">18,337,459</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">473</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">2,060,625</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">78,782</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(4,131)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(791,622)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">19,681,586</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Program contracts &ndash; commitments&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">1,264,992</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(39,725)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">1,225,267</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Service contracts &ndash; S&atilde;o Paulo </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">17,870,451</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">4,205</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">2,277,462</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(93,088)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(2,092)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(930,883)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">19,126,055</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Software license of use </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">595,404</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">37,986</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(127)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(101,132)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">532,131</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Right of use &ndash; Other assets</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">75,052</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">107,833</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(30)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(45,734)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">137,121</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Right of use &ndash; Investments</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">26,148</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(26,148)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Total </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">39,320,871</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">112,518</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,458,416</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(41,444)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(6,672)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(2,018,241)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">41,825,448</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">(*) As of September 30, 2023, Concession agreements &ndash;
equity value, and Program contracts included leases totaling R$ 46,363 and R$ 337,474 (R$ 54,356 and R$ 168,216 as of December 31, 2022),
respectively.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 65 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->63<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="7" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 23%; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>December </B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>31, </B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="width: 10%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Additions</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfer of contract
    asset</B></P></TD>
    <TD STYLE="width: 12%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfers </B></P></TD>
    <TD STYLE="white-space: nowrap; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Write-offs and disposals</B></P></TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Amortization</B></P></TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>30,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Intangible right arising from: </FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Concession agreements &ndash; equity value (*)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">499,326</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">4</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">19,161</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(925)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(299)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(14,665)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">502,602</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Concession agreements &ndash; economic value&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">652,039</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">3</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">63,182</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">62</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(120)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(94,480)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">620,686</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Concession agreements &ndash; new contracts&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">148,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">148,000</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 3pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Program contracts (*)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 3pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">18,337,459</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">473</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">2,060,625</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">78,782</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(4,131)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(791,622)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">19,681,586</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Program contracts &ndash; commitments&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">1,264,992</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(39,725)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">1,225,267</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Service contracts &ndash; S&atilde;o Paulo </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">17,870,451</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">4,205</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">2,277,462</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(93,088)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(2,092)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(930,883)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">19,126,055</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Software license of use </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">595,404</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">37,986</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(127)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(101,132)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">532,131</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Right of use &ndash; Other assets</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">75,052</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">107,833</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(30)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">(45,734)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">137,121</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Right of use &ndash; Investments</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">26,148</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(26,148)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Total </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">39,320,871</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">260,518</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,458,416</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(41,444)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(6,672)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(2,018,241)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">41,973,448</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="7" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 23%; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>December </B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>31,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2021</B></P>
</DIV></TD>
    <TD STYLE="width: 10%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Additions</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfer of contract
    asset</B></P></TD>
    <TD STYLE="width: 12%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfers </B></P></TD>
    <TD STYLE="white-space: nowrap; width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Write-offs and disposals</B></P></TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Amortization</B></P></TD>
    <TD STYLE="width: 11%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>30, 2023</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Intangible right arising from: </FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Concession agreements - equity value (*)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">491,057</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">7,569</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(173)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(113)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(13,981)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">484,359</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Concession agreements &ndash; economic value&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">681,441</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">13</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">35,978</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">254</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(8)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(82,159)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">635,519</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 3pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Program contracts (*)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">17,152,021</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">8,754</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">1,462,550</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">3,601</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(2,285)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(709,096)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">17,915,545</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Program contracts &ndash; commitments&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">1,317,957</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(39,724)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">1,278,233</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Service contracts &ndash; S&atilde;o Paulo </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">16,158,771</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">208</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">1,722,413</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">4,223</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(20,575)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(796,048)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">17,068,992</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Software license of use </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">598,734</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">214</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">94,058</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">6</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">(87,407)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7.5pt; line-height: 110%">605,605</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Right of use &ndash; Other assets</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">103,853</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">41,947</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(54)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(53,317)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">92,429</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">Total </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">36,503,834</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">51,136</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,322,568</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">7,911</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(23,035)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(1,781,732)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">38,080,682</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">(*) As of September 30, 2022, Concession agreements &ndash;
equity value, and Program contracts included leases totaling R$ 57,020 and R$ 171,331 (R$ 65,012 and R$ 180,669 as of December 31, 2021),
respectively.</P>


<!-- Field: Page; Sequence: 66 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->64<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of June 30, 2020, a contract was signed for the provision
of treatment services and final disposal of solid waste and collection of garbage tax in the Municipality of Diadema for 40 years. To
reach the best operationalization format, treatment services and final disposal of solid waste are in the study phase and, based on the
contractual provision, are subject to a partnership between SABESP and a private party, which will occur through a public call.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(c)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Intangible right arising from concession
agreements</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, the amounts not yet disbursed
were recorded in &ldquo;Program contract commitments&rdquo; under current and noncurrent liabilities, totaling R$&nbsp;26,379 and R$&nbsp;11,851
(R$&nbsp;100,188 and R$&nbsp;12,197 as of December 31, 2022), respectively.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(d)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Public-Private Partnership - PPP</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">SABESP carries out operations related to the PPPs mentioned
below. These operations and their respective guarantees are supported by agreements executed according to Law 11,079/2004.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The amounts recorded in intangible assets are as follows:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 36%; padding-top: 1pt; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 32%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="width: 32%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding-top: 1pt; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: right; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: right; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-top: 1pt; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Alto Tiet&ecirc;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-top: 1pt; padding-bottom: 1pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">239,310</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-top: 1pt; padding-bottom: 1pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">251,545</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-top: 1pt; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">S&atilde;o Louren&ccedil;o</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: right; border-bottom: Black 0.5pt solid">2,598,476</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: right; border-bottom: Black 0.5pt solid">2,725,900</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-top: 1pt; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: right; border-bottom: Black 1.5pt double">2,837,786</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: right; border-bottom: Black 1.5pt double">2,977,445</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The obligations assumed by the Company are as follows:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 16%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 14%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Current liabilities</B></P></TD>
    <TD STYLE="width: 14%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Noncurrent liabilities</B></P></TD>
    <TD STYLE="width: 14%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Total liabilities</B></P></TD>
    <TD STYLE="width: 14%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Current liabilities</B></P></TD>
    <TD STYLE="width: 14%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Noncurrent liabilities</B></P></TD>
    <TD STYLE="width: 14%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Total liabilities</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Alto Tiet&ecirc;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">72,095</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">72,095</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">91,782</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">36,645</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">128,427</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">S&atilde;o Louren&ccedil;o</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">167,736</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,583,118</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,750,854</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">130,631</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,700,123</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,830,754</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">239,831</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">2,583,118</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">2,822,949</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">222,413</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">2,736,768</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">2,959,181</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(e)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Amortization of Intangible Assets</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The average amortization rate totaled 5.1% and 4.9% as
of September 30, 2023 and 2022, respectively.</P>


<!-- Field: Page; Sequence: 67 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->65<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(f)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Right of use</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 46%; padding-right: 3.5pt; padding-left: 3.5pt">
<!-- Field: Rule-Page --><DIV STYLE="margin-top: 1pt; margin-bottom: 1pt; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 0.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page --></TD>
    <TD STYLE="width: 29%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="width: 25%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; border-bottom: Black 0.5pt solid"><B>Nature</B></P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 30, </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>December 31, </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Leases - Contract asset</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">276,893</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Leases - Concession and Program Contract</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cost</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">588,591</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">405,431</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accumulated amortization</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(204,754)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(182,859)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;(=) Net</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">383,837</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">222,572</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other assets </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Vehicles</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">205,593</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">153,384</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Properties</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11,501</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11,711</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Equipment</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">164</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">5,826</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accumulated amortization</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(80,137)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(95,869)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;&nbsp;(=) Net</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">137,121</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">75,052</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
<!-- Field: Rule-Page --><DIV STYLE="margin-top: 1pt; margin-bottom: 1pt; width: 100%"><DIV STYLE="font-size: 0.5pt; border-top: Black 0.5pt solid; border-bottom: Black 0.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page --></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
<!-- Field: Rule-Page --><DIV STYLE="margin-top: 1pt; margin-bottom: 1pt; width: 100%"><DIV STYLE="font-size: 0.5pt; border-top: Black 0.5pt solid; border-bottom: Black 0.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page --></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Right of use</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">520,958</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">574,517</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The lease liability corresponds to total future fixed
lease payments, adjusted to present value, considering an incremental rate on borrowings. For further information, see Note 16.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The table below shows the impact on the Company&rsquo;s
result:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Impact on the
    result</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 54%; padding-top: 1pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 23%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD STYLE="width: 23%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 30, </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 30, </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Right of use amortization</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(67,629)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(70,636)</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial result &ndash; interest expense and inflation adjustment</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(55,130)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(53,962)</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Expenses of short-term leases with low value</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 0.5pt solid">(17,082)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 0.5pt solid">(17,675)</P></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Reduction of profit for the period</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 1.5pt double">(139,841)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 1.5pt double">(142,273)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>


<!-- Field: Page; Sequence: 68 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->66<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(g)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Performance Agreements</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, the accounting balances of
the agreements in force recorded in contract asset and intangible assets were R$ 64,874 and R$ 2,113,499 (R$ 138,550 and R$ 2,126,106
as of December 31, 2022), respectively.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>15</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Property, plant and equipment </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Statement of financial position details</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="4" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD COLSPAN="4" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="4" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD COLSPAN="4" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 25%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; width: 8%; padding-left: 5.4pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Cost</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Accumulated
    depreciation</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Net</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: top; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Annual average
    depreciation rate</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; width: 8%; padding-left: 5.4pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Cost</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Accumulated
    depreciation</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Net</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: top; width: 10%; padding-left: 5.4pt">
    <P STYLE="font: 7pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Annual average
    depreciation rate</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Land</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">94,228</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">94,228</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">94,228</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">94,228</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt/110% Univers, Helvetica, Sans-Serif; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Buildings</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">102,529</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(44,357)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">58,172</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">2.1%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">90,311</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(42,343)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">47,968</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">2.1%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Equipment</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">444,482</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(308,065)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">136,417</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">14.8%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">412,828</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(291,963)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">120,865</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">15.3%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Transportation equipment</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">14,685</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(10,352)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">4,333</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">9.9%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">12,578</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(10,083)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">2,495</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">9.9%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Furniture and fixtures </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">36,281</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(15,567)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">20,714</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">6.7%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">38,528</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(15,032)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">23,496</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">6.7%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Other</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">105,027</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(467)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">104,560</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">5.0%</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">50,189</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(302)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">49,887</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">5.0%</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">797,232</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(378,808)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">418,424</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">10.8%</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">698,662</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(359,723)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">338,939</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">11.2%</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Changes</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="6" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 28%; padding-right: 5.65pt; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Additions</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfers</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Write-offs and disposals</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Depreciation</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 12%; padding-left: 5.4pt">
<DIV STYLE="margin-right: 5.65pt; margin-left: 0in; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 30,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Land</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">94,228</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">94,228</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt Univers, Helvetica, Sans-Serif; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Buildings</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">47,968</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,039</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">8,073</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(908)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">58,172</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Equipment</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">120,865</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">28,264</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">8,171</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(504)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(20,379)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">136,417</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Transportation equipment</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,495</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,354</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(516)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4,333</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Furniture and fixtures </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">23,496</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">5,401</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(6,896)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(65)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(1,222)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">20,714</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">49,887</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">51,538</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,210</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(75)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">104,560</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">338,939</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">88,242</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">14,912</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(569)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(23,100)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">418,424</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>


<!-- Field: Page; Sequence: 69 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->67<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="6" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 28%; padding-right: 5.65pt; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2021</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Additions</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Transfers</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Write-offs and disposals</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Depreciation</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 12%; padding-left: 5.4pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Land</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">94,213</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">94,213</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt Univers, Helvetica, Sans-Serif; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Buildings</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">45,498</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,278</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(1,180)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(45)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(871)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">46,680</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Equipment</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">115,154</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">20,244</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(8,162)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(403)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(17,186)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">109,647</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Transportation equipment</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,472</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">430</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(3)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(643)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,256</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Furniture and fixtures </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">22,079</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,064</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">29</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(88)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(1,088)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">22,996</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">11,741</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">14,886</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(29)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(78)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(66)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">26,454</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.65pt; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">291,157</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">40,472</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(8,912)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(617)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(19,854)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">302,246</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 70 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->68<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>16</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Borrowings and financing</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify; text-indent: -35.45pt"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt"><B>&nbsp;Borrowings and financing outstanding balance</B></FONT></TD>
    <TD COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 53%; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt"><B>Financial institution</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>Current</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Noncurrent</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>Total</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>Current</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Non<BR>
    current</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>Total</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt"><B>Local currency</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;12th issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">45,450</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">33,710</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">79,160</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">45,450</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">67,681</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">113,131</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;17th issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">144,632</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">144,632</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;18th issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">51,079</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">27,162</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">78,241</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">49,937</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">45,649</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">95,586</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;22nd issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">169,590</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">169,228</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">338,818</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">199,901</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">326,433</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">526,334</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;23rd issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">490,779</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">374,255</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">865,034</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">864,910</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">864,910</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;24th issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">507,770</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">507,770</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">488,478</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">488,478</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;26th issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,290,449</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,290,449</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,239,645</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,239,645</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;27th issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">299,874</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">698,554</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">998,428</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">299,614</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">698,339</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">997,953</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;28th issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">127,687</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,070,366</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,198,053</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,197,756</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,197,756</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;29th issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,306,942</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,306,942</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,275,295</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,275,295</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;30th issue debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">125,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">873,195</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">998,195</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">998,110</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">998,110</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Brazilian Federal Savings Bank</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">105,629</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,516,943</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,622,572</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">99,767</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,422,145</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,521,912</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Brazilian Development Bank - BNDES PAC</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">6,736</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">6,736</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Brazilian Development Bank - BNDES PAC II 9751</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">7,268</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">18,116</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">25,384</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">7,214</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">23,344</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">30,558</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Brazilian Development Bank - BNDES PAC II 9752</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">4,924</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">12,330</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">17,254</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">4,887</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">15,884</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">20,771</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Brazilian Development Bank - BNDES ONDA LIMPA</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">27,177</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">13,551</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">40,728</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">26,949</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">33,617</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">60,566</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Brazilian Development Bank &ndash; BNDES TIET&Ecirc; III</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">155,776</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">545,134</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">700,910</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">154,437</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">656,264</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">810,701</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Brazilian Development Bank - BNDES 2015</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">33,931</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">368,204</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">402,135</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">33,807</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">390,127</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">423,934</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Brazilian Development Bank - BNDES 2014</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">6,629</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">11,738</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">18,367</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">6,572</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">16,525</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">23,097</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Inter-American Development Bank &ndash; IDB 2202 </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">181,349</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,983,377</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">2,164,726</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">181,349</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">2,164,009</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">2,345,358</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Inter-American Development Bank &ndash; IDB INVEST</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">39,550</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">814,674</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">854,224</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">37,340</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">853,725</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">891,065</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Inter-American Development Bank &ndash; IDB INVEST 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">14,100</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">445,227</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">459,327</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">14,100</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">452,085</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">466,185</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Inter-American Development Bank &ndash; IDB INVEST 2023</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">14,100</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">454,823</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">468,923</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;International Finance Corporation - IFC 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">19,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">725,082</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">744,082</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">80,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">670,996</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">750,996</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;International Finance Corporation - IFC 2023</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">486,376</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">486,376</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Leases (Concession Agreements, Program Contracts, and Contract Asset)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">49,299</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">274,389</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">323,688</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">44,453</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">313,391</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">357,844</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Leases (others)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">72,007</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">86,236</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">158,243</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">72,109</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">29,265</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">101,374</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Other</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">4,961</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">3,657</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">8,618</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">6,241</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">5,867</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">12,108</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Interest and other charges</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">362,325</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">362,325</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">417,878</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">417,878</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.3pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt"><B>Total in local currency</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">2,407,484</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">14,111,488</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">16,518,972</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">1,933,373</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">14,249,540</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">16,182,913</P></TD></TR>
  </TABLE>
<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 71 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->69<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;<B>Borrowings and financing outstanding balance</B></FONT></TD>
    <TD COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 53%; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt"><B>Financial institution</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>Current</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Non<BR>
    current</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>Total</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>Current</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Non<BR>
    current</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: center"><B>Total</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt"><B>Foreign currency</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Inter-American Development Bank - IDB 1212 &ndash; US$ 20,556 thousand (US$ 30,834 thousand in December 2022)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">51,468</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">51,469</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">102,937</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">53,628</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">107,256</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">160,884</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Inter-American Development Bank - IDB 4623 &ndash; US$ 113,344 thousand (US$ 74,299 thousand in December 2022)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">545,374</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">545,374</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">367,441</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">367,441</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;International Bank for Reconstruction and Development (IBRD) &ndash; IBRDs 7662 and 8916 - US$ 90,079 thousand (US$ 78,197 thousand in December 2022)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">407,313</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">437,758</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">31,722</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">365,648</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">397,370</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;JICA 15 &ndash; &yen; 6,914,580 thousand (&yen; 8,067,010 thousand in December 2022)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">38,618</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">193,090</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">231,708</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">45,602</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">273,610</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">319,212</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;JICA 18 &ndash; &yen; 6,216,960 thousand (&yen; 7,253,120 thousand in December 2022)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">34,722</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">173,484</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">208,206</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">41,001</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">245,865</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">286,866</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;JICA 17 &ndash; &yen; 3,608,700 thousand (&yen; 3,753,048 thousand in December 2022)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">9,674</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">110,446</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">120,120</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">11,424</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">136,227</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">147,651</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;JICA 19 &ndash; &yen; 24,482,493 thousand (&yen; 26,296,011 thousand in December 2022)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">60,771</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">758,076</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">818,847</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">71,761</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">967,124</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">1,038,885</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;IDB 1983AB &ndash; (US$ 7,692 thousand in December 2022)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">39,962</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">39,962</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&nbsp;Interest and other charges</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">18,968</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">18,968</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">17,487</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.1pt; text-align: right; border-bottom: Black 0.5pt solid">17,487</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.3pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt"><B>Total in foreign currency</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">244,666</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">2,239,252</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">2,483,918</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">312,587</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">2,463,171</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 0.5pt solid">2,775,758</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.3pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt"><B>Total borrowings and financing</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">2,652,150</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">16,350,740</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">19,002,890</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">2,245,960</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">16,712,711</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8.5pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">18,958,671</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="7" STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 0.1pt"><I>&nbsp;</I></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 0.1pt">Exchange rates as of September 30, 2023: US$ 5.0076; &yen;&nbsp;0.03351
    (as of December 31, 2022: US$ 5.2177; &yen; 0.03957).</P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 0.1pt">As of September 30, 2023, the Company did not have balances of borrowings
    and financing raised during the year, maturing within 12 months.</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="7" STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.1pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  </TABLE>

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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 50%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Local currency</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Guarantees</B></P></TD>
    <TD STYLE="width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Maturity</B></P></TD>
    <TD STYLE="width: 23%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Annual interest
    rate</B></P></TD>
    <TD STYLE="width: 10%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Inflation adjustment</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">12th issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2025</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TR + 9.5% </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">17th issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2023</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI + 0.75% (series 1), 4.5% (series 2), and 4.75% (series 3)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IPCA (series 2 and 3)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">18th issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2024</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TJLP + 1.92 % (series 1 and 3) and 8.25% (series 2)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IPCA (series 2)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">22nd issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2025</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI + 0.58% (series 1) and CDI+ 0.90% (series 2) and 6.0% (series 3)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IPCA (series 3)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">23rd issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2027</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI + 0.49% (series 1) and CDI+ 0.63% (series 2)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">24th issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2029</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3.20% (series 1) and 3.37% (series 2)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IPCA (series 1 and 2)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">26th issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2030</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4.65% (series 1) and 4.95% (series 2)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IPCA (series 1 and 2)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">27th issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2027</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI + 1.60% (series 1) and CDI+ 1.80% (series 2) and 2.25% (series 3)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">28th issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2028</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right">CDI + 1.20% (series 1) and CDI+ 1.44% (series 2) and</P>
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right">1.60% (series 3)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">29th issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2036</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right">CDI + 1.29% (series 1), 5.3058% (series 2), and</P>
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right">5.4478% (series 3)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IPCA (series 2 and 3)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">30th issue debentures</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2029</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI + 1.30% (series 1) and CDI+ 1.58% (series 2)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Federal Savings Bank</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2023/2042</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">5% to 9.5%</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TR</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Development Bank - BNDES PAC</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2023</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TJLP + 1.82% </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Development Bank - BNDES PAC II 9751</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2027</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TJLP + 1.72% </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Development Bank - BNDES PAC II 9752</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2027</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TJLP + 1.72% </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Development Bank - BNDES ONDA LIMPA</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2025</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TJLP + 1.92% </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Development Bank &ndash; BNDES TIET&Ecirc; III</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2028</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TJLP + 1.66% </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Development Bank - BNDES 2015</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2035</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TJLP + 2.18% </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Development Bank - BNDES 2014</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2026</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">TJLP + 1.76%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">Inter-American Development Bank &ndash; IDB 2202</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Government</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2035</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI + 0.86%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">Inter-American Development Bank &ndash; IDB INVEST</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2034</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI+ 1.90% and CDI 2.70%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Inter-American Development Bank &ndash; IDB INVEST 2022</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2036</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI + 2.50%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Inter-American Development Bank &ndash; IDB INVEST 2023</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2036</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI + 0.50%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">International Finance Corporation - IFC </FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2032</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">CDI + 2.00%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Leases </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">(Concession Agreements, Program Contracts, and Contract Asset)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2035</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">7.73% to 10.12% </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IPC</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Leases (others)</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2027</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">7.76% to 15.39%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Own funds</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2025</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3% (FEHIDRO); TJLP + 1.5% (FINEP)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  </TABLE>
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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 50%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Foreign currency</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 10%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Guarantees</B></P></TD>
    <TD STYLE="width: 8%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Maturity</B></P></TD>
    <TD STYLE="width: 23%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Annual interest
    rate</B></P></TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Exchange variation</B></P></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Inter-American Development Bank - IDB 1212 </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&ndash; US$ 20,556 thousand </FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Government</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2025</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">SOFR + 4.72%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">US$</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">Inter-American Development Bank - IDB 4623 &ndash; US$ 113,344 thousand </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Government</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2044</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">SOFR + 6.53395%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">US$</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">International Bank for Reconstruction and Development (IBRD) &ndash; </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">IBRDs 7662 and 8916 - US$ 90,079 thousand</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Government</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2034</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">SOFR + 5.96% and 7.06%</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">US$</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">JICA 15 </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&ndash; &yen; 6,914,580 thousand</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Government</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2029</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1.8% and 2.5%</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Yen</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">JICA 18 </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&ndash; &yen; 6,216,960 thousand</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Government</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2029</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1.8% and 2.5%</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Yen</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">JICA 17 </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&ndash; &yen; 3,608,700 thousand</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Government</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2035</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1.2% and 0.01% </FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Yen</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">JICA 19 </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&ndash; &yen; 24,482,493 thousand</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Government</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2037</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1.7% and 0.01% </FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Yen</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD></TR>
  </TABLE>
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<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Payment schedule &ndash; accounting
balances as of September 30, 2023</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="8" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 28%; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2023</B></P></TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2024</B></P></TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2025</B></P></TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2026</B></P></TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2027</B></P></TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2028</B></P></TD>
    <TD STYLE="width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>2029 to 2044 </B></P></TD>
    <TD STYLE="white-space: nowrap; width: 9%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>TOTAL</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><B><I>LOCAL CURRENCY</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">342,735</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,205,249</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,334,931</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,213,264</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,360,087</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">656,199</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,548,625</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">7,661,090</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Federal Savings Bank</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">25,810</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">107,238</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">113,931</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">121,043</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">128,588</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">136,471</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">989,491</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,622,572</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">BNDES</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">58,759</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">235,928</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">215,485</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">205,555</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">192,861</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">72,977</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">223,213</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,204,778</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDBs - National </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">14,100</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">249,099</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">260,899</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">330,209</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">315,069</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">420,959</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,356,865</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,947,200</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IFCs</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">7,600</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">22,800</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">39,200</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">51,800</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">70,800</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">103,600</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">934,658</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,230,458</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Leases </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">(Concession Agreements, Program Contracts, and Contract Asset)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">49,299</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">51,852</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">30,229</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">34,632</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">38,007</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">119,669</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">323,688</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Leases (others)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">26,637</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">59,141</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">50,856</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">20,889</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">720</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">158,243</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,711</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,765</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">142</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">8,618</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Interest and other charges</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">254,428</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">107,897</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">362,325</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt"><I>TOTAL IN LOCAL CURRENCY</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">732,780</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">2,039,651</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">2,069,919</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">1,973,131</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">2,102,757</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">1,428,213</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">6,172,521</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">16,518,972</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><B><I>FOREIGN CURRENCY</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">51,469</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">66,405</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">29,873</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">29,873</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">29,873</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">440,818</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">648,311</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IBRD</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">30,445</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">285,533</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">437,758</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">JICA</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4,837</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">143,785</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">655,119</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,378,881</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Interest and other charges</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">16,032</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">2,936</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">18,968</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt"><I>TOTAL IN FOREIGN CURRENCY</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">20,869</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">228,635</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">240,635</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">204,103</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">204,103</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">204,103</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">1,381,470</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">2,483,918</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt"><I>Total</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 1.5pt double">753,649</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 1.5pt double">2,268,286</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 1.5pt double">2,310,554</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 1.5pt double">2,177,234</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 1.5pt double">2,306,860</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 1.5pt double">1,632,316</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 1.5pt double">7,553,991</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 1.5pt double">19,002,890</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.25pt"><B>&nbsp;</B></FONT></P>


<!-- Field: Page; Sequence: 75 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->73<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.25pt"><B>&nbsp;</B></FONT></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">(II)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Changes</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="12" STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 26%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center"><B>December </B></P>
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center"><B>31, </B></P>
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Addition (lease)</B></P></TD>
    <TD STYLE="width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Funding</B></P></TD>
    <TD STYLE="width: 5%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Borrowing costs</B></P></TD>
    <TD STYLE="width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Inflation adjustment
    and exchange rate changes</B></P></TD>
    <TD STYLE="width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Inflation adjustment
    / exchange rate change and incorporated interest- Capitalized</B></P></TD>
    <TD STYLE="width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Interest paid</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Amortization</B></P></TD>
    <TD STYLE="width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Accrued interest</B></P></TD>
    <TD STYLE="width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Provision for
    interest and fees - Capitalized</B></P></TD>
    <TD STYLE="width: 5%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Expenses with
    borrowing costs </B></P></TD>
    <TD STYLE="white-space: nowrap; width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center"><B>September </B></P>
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: center"><B>30, 2023</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><B><I>LOCAL CURRENCY</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">8,166,366</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(1,556)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">95,247</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">16,096</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(621,835)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(398,865)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">484,283</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">135,735</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">8,341</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">7,883,812</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Federal Savings Bank</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,526,185</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">158,280</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">18,726</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4,690</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(91,347)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(81,035)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">73,143</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">18,475</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,627,117</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">BNDES</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,380,993</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">9,099</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,104</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(75,062)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(182,979)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">60,832</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">13,404</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">189</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,208,580</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB 2202</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,450,550</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(328,627)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(181,349)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">97,143</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">146,846</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">716</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,185,279</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB INVEST 2020</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">943,619</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(138,676)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(37,340)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">27,360</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">74,830</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">499</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">870,292</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IFC 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">774,525</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(57,794)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(7,600)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">86,100</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">686</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">795,917</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IFC 2023</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">500,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(13,624)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">270</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">486,646</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB INVEST 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">469,327</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(36,662)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(7,050)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">54,647</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">192</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">480,454</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB INVEST 2023</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">470,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(1,083)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(5,141)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">26,532</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">490,314</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Leases (Concession Agreements, Program Contracts, and Contract Asset)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">357,844</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(40,850)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(34,157)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">40,850</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">323,687</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Leases (others)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">101,374</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">107,833</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(14,280)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(65,244)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">28,560</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">158,243</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">12,130</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">3,629</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">54</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(473)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(7,173)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">456</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">8</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">8,631</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><I>TOTAL IN LOCAL CURRENCY</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">16,182,913</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">107,833</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">1,131,909</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(16,263)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">123,126</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">22,890</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(1,410,747)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(1,002,792)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">893,806</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">475,668</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">10,629</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">16,518,972</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><B><I>FOREIGN CURRENCY</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDBs</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">532,693</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">192,973</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(2,735)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(19,824)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(16,387)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(51,181)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">26,963</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">752</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">663,254</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IBRD</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">399,762</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">88,969</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(3,032)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(14,890)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(22,089)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(31,009)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">20,746</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">56</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">354</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">438,867</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">JICA</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 0.2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,803,109</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(261,096)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">105</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(26,201)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(152,894)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">18,036</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">584</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">154</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,381,797</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB 1983AB</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">40,194</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(1,813)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(1,447)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(38,323)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">909</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">311</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">169</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><I>TOTAL IN FOREIGN CURRENCY</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">2,775,758</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">281,942</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(5,767)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(297,623)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">105</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(66,124)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(273,407)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">66,654</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">951</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">1,429</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">2,483,918</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.3pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt"><I>Total</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">18,958,671</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">107,833</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">1,413,851</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">(22,030)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">(174,497)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">22,995</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">(1,476,871)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">(1,276,199)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">960,460</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">476,619</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">12,058</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 0.3pt; text-align: right; border-bottom: Black 1.5pt double">19,002,890</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="12" STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 26%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>December </B></P>
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>31, </B></P>
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2021</B></P>
</DIV></TD>
    <TD STYLE="width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Addition (lease)</B></P></TD>
    <TD STYLE="width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Funding</B></P></TD>
    <TD STYLE="width: 5%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Borrowing costs</B></P></TD>
    <TD STYLE="width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Inflation adjustment
    and exchange rate changes</B></P></TD>
    <TD STYLE="width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Inflation adjustment
    / exchange rate change and incorporated interest- Capitalized</B></P></TD>
    <TD STYLE="width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Interest paid</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Amortization</B></P></TD>
    <TD STYLE="width: 7%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Accrued interest</B></P></TD>
    <TD STYLE="width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Provision for interest
    and fees - Capitalized</B></P></TD>
    <TD STYLE="width: 5%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Expenses with borrowing
    costs </B></P></TD>
    <TD STYLE="white-space: nowrap; width: 6%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 30</B></P>
    <P STYLE="font: 6.5pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>, 2022</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><B><I>LOCAL CURRENCY</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">7,467,968</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,000,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(3,786)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">131,416</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(490,679)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(521,761)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">387,729</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">196,825</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">8,383</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">8,176,095</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Brazilian Federal Savings Bank</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,483,113</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">91,299</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">11,913</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4,663</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(87,562)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(74,686)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">59,322</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">28,331</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,516,393</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">BNDES</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,392,844</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">200,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4,001</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,083</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(77,467)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(160,601)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">46,377</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">31,086</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">194</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,438,517</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB 2202</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,589,442</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(281,971)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(181,349)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">71,988</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">169,562</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">716</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,368,388</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB INVEST 2020</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">956,942</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(108,921)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(34,800)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">95,097</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">499</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">908,817</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB INVEST 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">470,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(3,922)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">15,509</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">43</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">481,630</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IFC 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">760,000</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(9,385)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">21,139</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">152</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">771,906</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Leases </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">(Concession Agreements, Program Contracts, and Contract Asset)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">397,311</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(40,939)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(28,589)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">40,939</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 2pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">368,722</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Leases (others)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">125,969</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">41,947</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(13,022)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(64,211)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">26,044</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">116,727</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">14,094</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,654</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">35</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(599)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(4,138)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">571</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">32</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">13,651</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><I>TOTAL IN LOCAL CURRENCY</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">14,427,683</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">41,947</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,524,953</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(17,093)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">147,365</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,748</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,101,160)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,070,135)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">743,576</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">446,975</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">9,987</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">16,160,846</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><B><I>FOREIGN CURRENCY</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDBs</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">387,837</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">154,692</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(3,444)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(2,971)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(7,400)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(56,273)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">8,994</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">358</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">481,793</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IBRD</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">420,881</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">19,115</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(3,166)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(13,946)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">61</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(3,779)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(30,895)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,515</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">20</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">258</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">392,064</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">JICA</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,401,887</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">15,546</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(535,408)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,837</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(32,498)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(171,909)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">19,479</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,654</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">153</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,701,741</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB 1983AB</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">85,548</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(4,149)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,051)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(40,115)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">971</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">491</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">312</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">42,007</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt"><I>TOTAL IN FOREIGN CURRENCY</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,296,153</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">189,353</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(6,610)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(556,474)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,898</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(44,728)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(299,192)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">32,959</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,165</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,081</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,617,605</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt"><I>Total</I></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">17,723,836</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">41,947</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">2,714,306</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(23,703)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(409,109)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">8,646</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(1,145,888)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(1,369,327)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">776,535</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">450,140</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">11,068</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">18,778,451</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.25pt"><B>&nbsp;</B></FONT></P>


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<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 7.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Main events in the nine-month period
ended September 30, 2023</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>Debentures</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In the first quarter of 2023, the Company paid the final
amortization of the 17th issue debentures, totaling R$&nbsp;152,157 million, of which R$&nbsp;145,284 million in principal and R$&nbsp;6,873
million in interest.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In the first quarter of 2023, the Company paid the final
amortization of the 2nd series of the 22nd issue debentures, totaling R$&nbsp;214,404 million, of which R$&nbsp;200,000 million in principal
and R$&nbsp;14,404 million in interest.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>IDB INVEST 2023</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In the second quarter of 2023, the Company raised R$
470.0 million with the Inter-American Investment Corporation (IDB INVEST).</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The proceeds from this contract will be used to partially
finance the Company&rsquo;s investments related to the 4th Stage of the Tiet&ecirc; River Cleaning Project.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The principal will be amortized in semi-annual payments
in December and June, starting in December 2023 and ending in December 2036. Interests mature semi-annually in June and December, starting
in June 2023 and ending in December 2036, at CDI + 0.5% p.a.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The loan is collateralized by Soci&eacute;t&eacute; de
Promotion et de Participation pour la Coop&eacute;ration Economique (PROPARCO). Interests mature semi-annually in June and December, starting
in June 2023 and ending in December 2036, at CDI + 2.0% p.a.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Symbol; font-size: 10pt">&#183;</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">The covenants agreed upon for IDB INVEST
2023 are:</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt 21.25pt; text-align: justify">Calculated every quarter, when disclosing
the quarterly information or annual financial statements:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt 21.25pt; text-align: justify">- Net debt/adjusted EBITDA equal to or
lower than 3.50;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt 21.25pt; text-align: justify">- Adjusted EBITDA/paid financial expenses
equal to or higher than 2.35;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt 21.25pt; text-align: justify">They should be maintained for two (2) consecutive
quarters or not, for any four (4) consecutive quarters.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>IDB 1983AB</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In the second quarter of 2023, the Company paid the final
amortization of IDB 1983AB, totaling R$&nbsp;39.7 million, of which R$&nbsp;38.3 million in principal and R$&nbsp;1.4 million in interest.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>BNDES PAC 2008</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In the second quarter of 2023, the Company paid the final
amortization of BNDES PAC 2008, totaling R$ 1.1 million.</P>


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    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>IFC 2023</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In the second quarter of 2023, the Company contracted
financing of R$&nbsp;1.0 billion with the International Finance Corporation (IFC), which is expected to be received by September 2023.
The proceeds raised from this contract will be exclusively used to cover the costs of the New Pinheiros Project.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In the third quarter of 2023, R$ 0.5 billion was raised.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The principal will be amortized in semi-annual payments
in October and April, starting in October 2025 and ending in April 2033. Interests mature semi-annually in October and April, starting
in October 2023 and ending in April 2033, at CDI + 1.7% p.a. SABESP must also pay to IFC a commitment fee of 1% p.a. on the portion that
has not been disbursed or canceled.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Symbol; font-size: 10pt">&#183;</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">The covenants agreed upon for IFC 2023
are:</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt 21.25pt; text-align: justify">Calculated every quarter, when disclosing
the quarterly information or annual financial statements:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt 21.25pt; text-align: justify">- Net debt/adjusted EBITDA equal to or
lower than 3.50;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt 21.25pt; text-align: justify">- Adjusted EBITDA/paid financial expenses
equal to or higher than 2.35;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt 21.25pt; text-align: justify">They should be maintained for two (2) consecutive
quarters or not, for any four (4) consecutive quarters.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 7.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Lease</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has lease agreements signed as Assets Lease.
During the construction period, work costs are capitalized to contract assets and the lease amount is recorded in the same proportion.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">After startup, the lease payment period starts (240 monthly
installments), and the amount is periodically restated by the contracted price index.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The amounts payable for the right of use of assets are
also recorded in this line. See Note 14 (f).</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 7.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(c)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Covenants</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The table below shows the most restrictive covenants
as of September 30, 2023.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 65%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 35%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Covenants</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Adjusted EBITDA / Adjusted Financial Expenses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 9pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif">Equal to or higher than 2.80</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">EBITDA / Financial Expenses Paid</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 9pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif">Equal to or higher than 2.35</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Adjusted Net Debt / Adjusted EBITDA</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 9pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif">Equal to or lower than 3.80</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Net Debt / Adjusted EBITDA</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 9pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif">Equal to or lower than 3.50</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Other Onerous Debt <SUP>(1)</SUP> / Adjusted EBITDA</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 9pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif">Equal to or lower than 1.30</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Adjusted Current Ratio</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 9pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif">Higher than 1.00</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="2" STYLE="padding-top: 6pt; padding-bottom: 1pt; font-size: 9pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(1) The contractual definition of &ldquo;Other Onerous Debts&rdquo; corresponds to the sum of pension plan obligations and healthcare plan, installment payments of tax debts, and installment payments of debts with the electricity supplier.</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, and December 31, 2022, the
Company met the requirements set forth by its borrowings and financing agreements.</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 7.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(d)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Borrowings and financing &ndash;
Credit limited</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 68%; padding-right: 3.5pt; padding-left: 3.5pt">
<!-- Field: Rule-Page --><DIV STYLE="margin-top: 1pt; margin-bottom: 1pt; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 0.5pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page --></TD>
    <TD STYLE="width: 3%; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 29%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Agent</B></P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(in millions of reais (*))</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Brazilian Federal Savings Bank</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">949</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Brazilian Development Bank (BNDES) </FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">220</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Inter-American Development Bank (IDB)</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">935</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">International Bank for Reconstruction and Development (IBRD) </FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,121</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">International Finance Corporation - IFC </FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">500</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">19</P></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">TOTAL</FONT></TD>
    <TD STYLE="vertical-align: top; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,744</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">(*) Brazilian Central Bank&rsquo;s exchange rate as of
September 30, 2023 (US$ 1.00 = R$ 5.0076; &yen; 1.00 = R$ 0.03351).</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Financing resources contracted have specific purposes
and are released for the execution of their respective investments, according to the progress of the works.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>17</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Taxes and contributions</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Current assets</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 44%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 28%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 28%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 10pt/110% Frutiger Light; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Recoverable taxes</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 10pt/110% Frutiger Light; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Income tax and social contribution</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">228,443</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">206,517</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Withheld income tax (IRRF) on financial investments</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">20,770</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">33,283</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other federal taxes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">13,529</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,106</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">262,742</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">242,906</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 60%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 40%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 10pt/110% Frutiger Light; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Recoverable taxes</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 10pt/110% Frutiger Light; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Income tax and social contribution</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">228,443</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Withheld income tax (IRRF) on financial investments</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">20,771</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other federal taxes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">13,529</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">262,743</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Current liabilities</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 44%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 28%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 28%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Taxes and contributions payable</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Income tax and social contribution</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">108,272</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Cofins and Pasep</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">115,377</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">134,624</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">INSS (social security contribution)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">44,393</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">44,515</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">IRRF (withholding income tax)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">6,592</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">63,361</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">35,523</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">50,961</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">310,157</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">293,461</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">On February 08, 2023, the Federal Supreme Court (STF)
unanimously decided that a final decision favorable to companies on taxes paid on a continuous base would lose its effects if the STF
later rules against it.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">The Company analyzed the matter judged in this decision, which
covers Social Contribution on Net Profit, as well as other taxes that fit into the decision granted, and did not identify any impact on
the Financial Statements.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


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    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>18</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Deferred taxes and contributions</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Statement of financial position details</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 52%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 24%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 24%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"><B>Deferred income tax assets </B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Provisions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">628,572</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">560,404</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 10pt Frutiger Light; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Pension plan obligations - G1</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">127,287</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">141,606</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Donations of underlying assets on concession agreements</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">45,516</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">46,088</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Allowance for doubtful accounts</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">222,462</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">199,363</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Other</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">209,546</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">171,798</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total deferred tax asset</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,233,383</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,119,259</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"><B>Deferred income tax liabilities</B></FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Temporary difference on concession of intangible asset</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(343,356)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(353,817)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Capitalization of borrowing costs</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(474,811)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(457,669)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Profit on supply to government entities</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(342,570)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(346,650)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Actuarial gain &ndash; G1 Plan </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(93,561)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(93,561)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Construction margin</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(41,265)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(43,323)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Borrowing costs</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt 7.1pt; text-align: right; text-indent: -7.1pt; border-bottom: Black 0.5pt solid">(9,945)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(13,517)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total deferred tax liabilities</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt 7.1pt; text-align: right; text-indent: -7.1pt; border-bottom: Black 0.5pt solid">(1,305,508)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,308,537)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Deferred tax liability, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(72,125)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(189,278)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 82 -->
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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Changes</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 49%; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Deferred income tax assets</B></FONT></TD>
    <TD STYLE="width: 17%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>December 31,</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="width: 17%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>Net</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>change</B></P>
</DIV></TD>
    <TD STYLE="width: 17%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 30,</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Provisions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">560,404</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">68,168</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">628,572</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Pension plan obligations - G1</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">141,606</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(14,319)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">127,287</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Donations of underlying assets on concession agreements</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">46,088</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(572)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45,516</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Allowance for doubtful accounts</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">199,363</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">23,099</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">222,462</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">171,798</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">37,748</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">209,546</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,119,259</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">114,124</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,233,383</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Deferred income tax liabilities</B></FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Temporary difference on concession of intangible asset</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(353,817)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">10,461</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(343,356)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Capitalization of borrowing costs</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(457,669)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(17,142)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(474,811)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Profit on supply to government entities</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(346,650)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">4,080</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(342,570)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Actuarial gain &ndash; G1</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(93,561)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(93,561)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Construction margin</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(43,323)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,058</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(41,265)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Borrowing costs</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(13,517)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,572</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(9,945)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,308,537)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,029</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,305,508)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Deferred tax liability, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(189,278)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">117,153</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(72,125)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 83 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->81<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 49%; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Deferred income tax assets</B></FONT></TD>
    <TD STYLE="width: 17%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>December 31,</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2021</B></P>
</DIV></TD>
    <TD STYLE="width: 17%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>Net</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>change</B></P>
</DIV></TD>
    <TD STYLE="width: 17%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 30,</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Provisions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">503,374</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(32,524)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">470,850</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Pension plan obligations - G1</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">150,577</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(6,679)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">143,898</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Donations of underlying assets on concession agreements</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">47,589</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,193)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">46,396</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Allowance for doubtful accounts</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">183,963</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(21,572)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">162,391</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">127,092</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">34,046</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">161,138</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,012,595</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(27,922)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">984,673</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Deferred income tax liabilities</B></FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Temporary difference on concession of intangible asset</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(368,235)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11,017</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(357,218)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Capitalization of borrowing costs</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(404,931)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(42,389)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(447,320)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Profit on supply to government entities</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(353,262)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">5,183</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(348,079)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Actuarial gain &ndash; G1</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(109,271)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(109,271)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Construction margin</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(46,079)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,070</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(44,009)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Borrowing costs</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(14,556)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(172)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(14,728)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,296,334)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(24,291)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,320,625)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Deferred tax liability, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(283,739)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(52,213)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(335,952)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 84 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->82<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(c)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Reconciliation of the effective tax
rate</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The amounts recorded as income tax and social contribution
expenses in the financial statements are reconciled to the statutory rates, as shown below:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: center; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 40%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: center; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 15%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 5.65pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>July to </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 15%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 5.65pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>January to </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 15%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 5.65pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>July to </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2022</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 15%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 5.65pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>January to </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2022</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Profit before income taxes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,277,649</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,467,427</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,638,213</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,702,154</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Statutory rate</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">34%</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">34%</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">34%</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">34%</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Estimated expense at statutory rate</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(434,401)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,178,925)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(556,992)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,258,732)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Tax benefit of interest on capital</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">44,492</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">32,878</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Permanent differences:</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: justify; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">&#9;Provision Law 4,819/1958 &ndash; G0 (i)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(10,181)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(31,111)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(6,876)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(21,861)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: justify; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">&#9;Donations</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,889)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(6,361)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(2,434)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(7,316)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: justify; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">&#9;Other differences</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">15,117</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">41,728</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">9,149</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">31,934</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: justify; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: justify; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">Income tax and social contribution</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(431,354)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(1,130,177)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(557,153)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(1,223,097)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: justify; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: justify; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">Current income tax and social contribution</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(461,143)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,247,330)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(501,204)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,170,884)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: justify; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">Deferred income tax and social contribution</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">29,789</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">117,153</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(55,949)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(52,213)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 12pt; text-align: justify; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">Effective rate</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">34%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">33%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">34%</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">33%</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 43.75pt"></TD><TD STYLE="width: 21.3pt">(i)</TD><TD>Permanent difference related to the provision for the actuarial liability. See Note 21 (ii) and (v).</TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 85 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->83<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Frutiger Light; margin: 0; text-align: justify">&nbsp;</P>

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<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>19</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Provisions</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

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<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Lawsuits and proceedings that resulted
in provisions</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(I)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Statement of financial position details</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company is a party to several legal claims and administrative
proceedings arising from the normal course of business, including civil, tax, labor, and environmental matters. Management recognizes
provisions consistently with the recognition and measurement criteria established in Note 3.15 to the Annual Financial Statements as of
December 31, 2022. The terms and payment amounts are defined based on the outcome of these lawsuits.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 33%">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 2.85pt 1pt 0; text-align: center"><B>&nbsp;</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 2.85pt 1pt 0; text-align: center"><B>&nbsp;</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Provisions</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Escrow deposits</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Provisions net
    of deposits</B></P></TD>
    <TD STYLE="padding-left: 5.4pt; width: 1%; padding-right: 5.4pt; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Provisions</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Escrow deposits</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 11%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Provisions net
    of deposits</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Customer claims (i)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">169,416</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(6,647)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">162,769</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">151,023</FONT></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; white-space: nowrap; padding-bottom: 1pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(6,226)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">144,797</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Supplier claims (ii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">326,771</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(90,673)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">236,098</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">257,080</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(53)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">257,027</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other civil claims (iii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">111,689</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(1,252)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">110,437</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">99,462</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(1,131)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">98,331</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Tax claims (iv)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">98,907</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(16,568)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">82,339</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">79,532</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(16,037)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">63,495</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Labor claims (v)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">667,495</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(15,918)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">651,577</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">654,277</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(13,979)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">640,298</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Environmental claims (vi)</FONT></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; border-bottom: Black 0.5pt solid; text-align: right; margin-right: 0; margin-left: 0"><FONT STYLE="font-weight: normal">474,462</FONT></P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; border-bottom: Black 0.5pt solid; text-align: right; margin-right: 0; margin-left: 0"><FONT STYLE="font-weight: normal">(48)</FONT></P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; border-bottom: Black 0.5pt solid; text-align: right; margin-right: 0; margin-left: 0"><FONT STYLE="font-weight: normal">474,414</FONT></P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; border-bottom: Black 0.5pt solid; text-align: right; margin-right: 0; margin-left: 0"><FONT STYLE="font-weight: normal">406,872</FONT></P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; border-bottom: Black 0.5pt solid; text-align: right; margin-right: 0; margin-left: 0"><FONT STYLE="font-weight: normal">(36)</FONT></P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; border-bottom: Black 0.5pt solid; text-align: right; margin-right: 0; margin-left: 0"><FONT STYLE="font-weight: normal">406,836</FONT></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; border-bottom: Black 1.5pt double; text-align: right; margin-right: 0; margin-left: 0"><FONT STYLE="font-weight: normal">1,848,740</FONT></P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; border-bottom: Black 1.5pt double; text-align: right; margin-right: 0; margin-left: 0"><FONT STYLE="font-weight: normal">(131,106)</FONT></P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; border-bottom: Black 1.5pt double; text-align: right; margin-right: 0; margin-left: 0"><FONT STYLE="font-weight: normal">1,717,634</FONT></P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,648,246</P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(37,462)</P></TD>
    <TD STYLE="padding-left: 5.4pt; padding-right: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,610,784</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Current</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">1,014,493</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">-</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">1,014,493</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">924,038</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">924,038</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Noncurrent</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">834,247</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">(131,106)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; font-size: 12pt; text-align: right; font-weight: bold; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; font-weight: normal; line-height: 110%">703,141</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">724,208</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(37,462)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">686,746</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 86 -->
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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(II)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Changes</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="6" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 29%; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>December </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>31, </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Additional provisions</B></P></TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Interest and
    inflation adjustment</B></P></TD>
    <TD STYLE="width: 11%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Use of the accrual</B></P></TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>Amounts not used</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>(reversal)</B></P>
</DIV></TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>30,</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Customer claims (i)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">151,023</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">29,098</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">23,673</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(24,871)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(9,507)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">169,416</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Supplier claims (ii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">257,080</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">110,734</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">14,104</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(54,905)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(242)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">326,771</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other civil claims (iii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">99,462</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">68,527</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">19,266</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(14,431)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(61,135)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">111,689</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Tax claims (iv)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">79,532</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">16,513</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">4,794</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(496)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,436)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">98,907</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Labor claims (v)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">654,277</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">52,265</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45,004</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(37,144)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(46,907)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">667,495</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Environmental claims (vi)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">406,872</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">41,343</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">40,454</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(14,207)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">474,462</P></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Subtotal</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,648,246</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">318,480</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">147,295</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(131,847)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(133,434)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,848,740</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Escrow deposits</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(37,462)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(149,389)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(3,225)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">56,929</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,041</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(131,106)</P></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,610,784</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">169,091</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">144,070</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(74,918)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(131,393)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,717,634</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="6" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 29%; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>December 31,</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2021</B></P>
</DIV></TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Additional provisions</B></P></TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Interest and
    inflation adjustment</B></P></TD>
    <TD STYLE="width: 11%; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Use of the accrual</B></P></TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>Amounts not used</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>(reversal)</B></P>
</DIV></TD>
    <TD STYLE="width: 12%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 30, </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Customer claims (i)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">168,258</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">10,957</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">18,274</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(29,025)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(14,587)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">153,877</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Supplier claims (ii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">477,854</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">61,295</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">42,070</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(303,892)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(8,098)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">269,229</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other civil claims (iii)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">95,601</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">15,986</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">10,874</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(7,151)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(7,710)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">107,600</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Tax claims (iv)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">57,509</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">17,890</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">6,833</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,500)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,320)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">79,412</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Labor claims (v)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">349,962</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">79,700</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">27,698</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(37,513)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(36,619)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">383,228</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Environmental claims (vi)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">331,326</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">29,249</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">39,498</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(300)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(8,267)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">391,506</P></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Subtotal</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,480,510</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">215,077</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">145,247</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(379,381)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(76,601)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,384,852</FONT></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Escrow deposits</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(32,017)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(53,100)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(4,499)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">9,797</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,239</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(76,580)</P></TD></TR>
  <TR>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,448,493</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">161,977</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">140,748</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(369,584)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(73,362)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,308,272</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Lawsuits deemed as contingent liabilities</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company is a party to lawsuits and administrative
proceedings relating to environmental, tax, civil, and labor claims, which are assessed as contingent liabilities in the financial statements,
since it either does not expect outflows to be required or the amount of the obligations cannot be reliably measured. Contingent liabilities,
net of deposits, are represented as follows:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="white-space: nowrap; width: 44%; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; width: 29%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.75pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; width: 27%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.75pt solid"><B>Parent Company</B></P></TD></TR>

<TR>
    <TD STYLE="width: 46%; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; width: 27%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.75pt solid"><B>September 30,
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; width: 27%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.75pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Customer claims (i)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">161,477</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">200,966</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Supplier claims (ii)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">998,155</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,147,606</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other civil claims (iii)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,016,704</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,146,048</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Tax claims (iv)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,070,805</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,869,583</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Labor claims (v)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,830,301</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,471,423</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Environmental claims (vi)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.75pt solid">4,073,787</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.75pt solid">3,302,843</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">11,151,229</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">9,138,469</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(c)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Explanation of the nature of main
classes of lawsuits</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 42.55pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(i)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Customer claims </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Refer mainly to lawsuits from customers claiming that
their tariffs should be equal to those of other consumer categories, lawsuits for reduction of sewage tariff due to system losses, consequently
requiring the refund of amounts charged by the Company, and lawsuits for reduction of tariff for being eligible to the Social Welfare
Entity category.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 42.55pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(ii)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Supplier claims</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Include lawsuits filed by some suppliers alleging underpayment
of inflation adjustments and economic and financial imbalance of the agreements, and are in progress at different courts.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 42.55pt"><B>(iii)</B></TD><TD STYLE="text-align: justify"><B>Other civil claims</B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Refer mainly to indemnities for property damage, pain
and suffering, and loss of profits allegedly caused to third parties, such as vehicle accidents, claims, and challenges on the methodology
to collect tariffs, among others, filed at different court levels.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 42.55pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(iv)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Tax claims</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Tax claims refer mainly to tax collections and fines
in general challenged due to disagreements regarding notification or differences in the interpretation of legislation by the Company's
Management.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 42.55pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(v)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Labor claims</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company is a party to several labor lawsuits, involving
issues such as overtime, shift schedule, health hazard premium, and hazardous duty premium, prior notice, change of function, salary equalization,
service outsourcing, and others, which are at various court levels.</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 42.55pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(vi)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Environmental claims</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">These refer to several administrative proceedings and
lawsuits filed by government entities, including Companhia Ambiental do Estado de S&atilde;o Paulo (CETESB) and the Public Prosecution
Office of the S&atilde;o Paulo State, which aim at certain obligations to do and not to do, with the provision of fines for non-compliance
and imposition of compensation for environmental damages allegedly caused by the Company.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The main objects in which the Company is involved are:
a) blame SABESP for discharging or releasing sewage without proper treatment; b) invest in the water and sewage treatment system of the
municipality, under penalty of paying a fine; c) pay compensation for environmental damages; amongst others.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(d)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Guarantee insurance </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of May 25, 2023, the Company executed an agreement
effective for one year for the issue of policies under several types of guarantee insurance. The limit that can be used is R$ 600 million.
The guarantee insurance for escrow deposit is used in legal claims, where instead of immediately disbursing cash, the Company uses the
guarantee provided by the insurance until the end of these proceedings, limited to up to five years. As of September 30, 2023, R$ 512.3
million was available for use.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>20</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Labor liabilities and pension plan
obligations</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 52%; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 24%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 24%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30, 2023</B></P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31, 2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Salaries and payroll charges</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">42,225</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">70,089</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Provision for vacation</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">271,269</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">254,469</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Provision for Christmas bonus</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">88,117</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Healthcare plan (i)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">83,329</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">70,136</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Provision for profit sharing (ii)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">74,337</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">96,227</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Incentivized Dismissal Program - IDP (iii)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">342,222</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">-</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Consent Decree (TAC)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">6,869</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">6,114</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Knowledge Retention Program (KRP)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,238</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,469</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Total</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">909,606</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">498,504</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(i)</B></FONT></TD><TD><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Healthcare plan</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Benefits granted are paid after the event, free of choice,
and are sponsored by the contributions of SABESP and the employees. In the third quarter of 2023, the Company contributed 9.3%, on average,
of gross payroll, totaling R$ 85,971 (8.8% in the third quarter of 2022, totaling R$ 68,982).</P>


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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(ii)</B></FONT></TD><TD><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Profit sharing</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Based on an agreement with the labor union, the Profit
Sharing Program corresponds to up to one month&rsquo;s salary for each employee, depending on the achievement of the goals established,
from January to December, and should be paid in the subsequent year.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 21.3pt"><B>(iii)</B></TD><TD><B>Incentivized Dismissal Program - IDP</B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">In June 2023, the Company implemented the Incentivized
Dismissal Program (IDP or Program) to pacifically reduce the workforce and provide gains in efficiency, increase of competitiveness, and
optimization of costs.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The deadline for registrations in the Program was from
June 1 to 30, 2023, and the employment terminations will occur from July 1, 2023 to June 30, 2024. The IDP received registrations from
1,862 employees.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">For all Program participants, compliance with the clauses
contained in the Collective Bargaining Agreement effective on the date of termination is guaranteed, and the following indemnity incentives
will be granted:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 17.85pt"></TD><TD STYLE="width: 17.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">a.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">half of the indemnified advance notice,
proportional to the service time at SABESP, equivalent to the percentage of the FGTS balance for termination purposes on the date of termination
(according to the table below);</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.7pt; text-align: justify; text-indent: -21.3pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 17.85pt"></TD><TD STYLE="width: 17.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">b.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">indemnity incentive proportional to
the service time at SABESP based on the base salary + function bonus, for each complete year of work (according to the table below); and</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.7pt; text-align: justify; text-indent: -21.3pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 17.85pt"></TD><TD STYLE="width: 17.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">c.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">health plan: starting from the subsequent
month of termination, the health plan will be the responsibility of the policyholder and SABESP will reimburse the monthly fee up to an
individual amount of R$ 1,878.30/month for the policyholder and his/her spouse, for 24 consecutive and uninterrupted months. If the policyholder
chooses a health plan with a monthly fee lower than the reimbursable amount, he/she will not be entitled to any difference, thus not generating
any credit or balance to be offset against future installments over the course of the 24 consecutive and uninterrupted months.</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.7pt; text-align: justify; text-indent: -21.3pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 42%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Service time at
    SABESP (years)</B></P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 26%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>% of the FGTS balance</B></P></TD>
    <TD STYLE="vertical-align: top; width: 32%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>% of the compensation
    for each complete year of work</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">&gt; 15</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">20%</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">20%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">11 - 15</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">12.5%</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">12.5%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">6 - 10</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">5%</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">5%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">0 - 5</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">2.5%</FONT></TD>
    <TD STYLE="padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">2.5%</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, R$&nbsp;442,119 was recorded
due to the provision for employee indemnity incentives, of which R$&nbsp;342,222 in current liabilities and R$&nbsp;99,897 in noncurrent
liabilities under &ldquo;Labor Obligations&rdquo;.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>21</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Pension plan obligations</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has Post-Employment Benefit Plans in the
following modalities: Defined Benefit (BD) &ndash; G1 (i) and G0 (ii); and Defined Contribution (CD) &ndash; Sabesprev Mais (iii) and
VIVEST (iv), whereby only the latter is open for new adhesions. See the reconciliation of expenses with such plans in item (v).</P>


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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B><U>Defined benefit plans</U></B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>Summary of pension plan obligations- Liabilities</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 55%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 15%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>G1 Plan</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 15%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>G0 Plan</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 15%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Total</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Pension plan obligations as of December 31, 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(148,116)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(2,002,075)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(2,150,191)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(Expenses) / revenues recognized in 2023</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">13,152</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(168,915)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(155,763)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Payments made in 2023</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">30,796</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">148,240</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">179,036</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Pension plan obligations as of September 30, 2023</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(104,168)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(2,022,750)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(2,126,918)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 55%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 15%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>G1 Plan</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 15%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>G0 Plan</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 15%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Total</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Pension plan obligations as of December 31, 2021</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(129,600)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(2,192,062)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(2,321,662)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(Expenses) recognized in 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(8,779)</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(132,714)</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(141,493)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Payments made in 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">29,387</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">140,497</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">169,884</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Pension plan obligations as of September 30, 2022</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(108,992)</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(2,184,279)</P></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(2,293,271)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 14.2pt"></TD><TD STYLE="width: 22.7pt"><B>(i)</B></TD><TD STYLE="text-align: justify"><B>G1 Plan </B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify">The defined benefit plan (&ldquo;G1 Plan&rdquo;)
managed by SABESPREV receives similar contributions established in a plan of subsidy of actuarial study of SABESPREV, as follows:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.85pt"></TD><TD STYLE="width: 17.85pt"><FONT STYLE="font-family: Symbol; font-size: 10pt">&#183;</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">0.99% of the portion of the salary of
participation up to 20 salaries; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 3pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.85pt"></TD><TD STYLE="width: 17.85pt"><FONT STYLE="font-family: Symbol; font-size: 10pt">&#183;</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">8.39% of the surplus, if any, of the
portion of the salary of participation over 20 salaries.</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 14.2pt"></TD><TD STYLE="width: 22.7pt"><B>(ii)</B></TD><TD STYLE="text-align: justify"><B>G0 Plan </B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify">According to State Law 4,819/1958, employees
who started providing services before May 1974 acquired a legal right to receive supplemental pension payments, which rights are referred
to as &quot;G0 Plan&quot;. The Company pays supplemental retirement and pension amounts on behalf of the S&atilde;o Paulo State and seeks
reimbursements of such amounts, which are recorded in the &ldquo;Balances with related parties&rdquo; line, limited to the amounts considered
virtually certain to be reimbursed by the S&atilde;o Paulo State.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 14.2pt"></TD><TD STYLE="width: 22.7pt"><B>(iii)</B></TD><TD STYLE="text-align: justify"><B>Sabesprev Mais Plan </B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify">Managed by SABESPREV, the sponsor's contributions
correspond to the result obtained by applying a percentage of 100% to the basic contribution made by the participant.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 14.2pt"></TD><TD STYLE="width: 22.7pt"><B>(ii)</B></TD><TD STYLE="text-align: justify"><B>VIVEST Plan </B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify">Managed by VIVEST, the sponsor's contributions
correspond to the result obtained by applying a percentage of 100% to the basic contribution made by the participant.</P>


<!-- Field: Page; Sequence: 91 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->89<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 14.2pt"></TD><TD STYLE="width: 22.7pt"><B>(v)</B></TD><TD STYLE="text-align: justify"><B>Reconciliation of expenditures with pension plan obligations </B></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 0 35.45pt; text-align: justify"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 36%; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 15%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>July to September</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="width: 17%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="width: 15%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>July to September</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="width: 17%; padding-right: 5.4pt; padding-left: 5.4pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>January to September</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">G1 Plan (i)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(4,384)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(13,152)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,922</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">8,779</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">G0 Plan (ii)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">56,305</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">168,915</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">44,238</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">132,714</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Sabesprev Mais Plan (iii)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">7,032</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">20,514</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">6,686</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">18,993</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">VIVEST Plan (iv)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">142</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">340</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">85</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">216</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Subtotal</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">59,095</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">176,617</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">53,931</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">160,702</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Capitalized</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(576)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,954)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(878)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(2,472)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Reimbursement of additional retirement and pension benefits paid (G0)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(26,361)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(77,412)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(24,014)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(68,416)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,492</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">4,655</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,333</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,916</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Pension plan obligations (Note 27)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">33,650</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">101,906</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">30,372</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">93,730</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>22</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Services payable</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">This line records the balances payable, mainly from services
received from third parties, such as the supply of electric power, reading of hydrometers and delivery of water and sewage bills, cleaning,
surveillance and security services, collection, legal counsel services, audit, marketing, and advertising and consulting services, among
others. The amounts payable to the municipal governments related to transfers provided for in the concession agreements are also recorded.
The balances as of September 30, 2023, and December 31, 2022, were R$ 756,547 and R$ 723,242, respectively.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>23</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Equity </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Share capital</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">As of September 30, 2023, and December 31, 2022, the
authorized, subscribed, and paid-in capital, totaling R$ 15,000,000, was composed of 683,509,869 registered, book-entry common shares
with no par value, as follows:</P>


<!-- Field: Page; Sequence: 92 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->90<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 4.8pt; padding-right: 8.5pt; padding-bottom: 2.4pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>September 30,
    2023</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 52%; padding-top: 4.8pt; padding-right: 8.5pt; padding-bottom: 2.4pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Number of shares</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>%</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 15%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Number of shares</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 9%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>%</B></P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 4.8pt; padding-right: 8.5pt; padding-bottom: 2.4pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&nbsp;S&atilde;o Paulo State </FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">343,506,664</FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">50.3</FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">343,506,664</FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">50.3</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 4.8pt; padding-right: 8.5pt; padding-bottom: 2.4pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&nbsp;Other shareholders </FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"></FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"></FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 4.8pt; padding-right: 8.5pt; padding-bottom: 2.4pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&nbsp;&nbsp;&nbsp;In Brazil <SUP>(1)</SUP></FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">253,006,352</FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">37.0</FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">257,339,417</FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">37.6</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-top: 4.8pt; padding-right: 8.5pt; padding-bottom: 2.4pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&nbsp;&nbsp;&nbsp;Abroad <SUP>(2) </SUP></FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: right; border-bottom: Black 0.5pt solid">86,996,853</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: right; border-bottom: Black 0.5pt solid">12.7</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: right; border-bottom: Black 0.5pt solid">82,663,788</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: right; border-bottom: Black 0.5pt solid">12.1</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 4.8pt; padding-right: 8.5pt; padding-bottom: 2.4pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"></FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"></FONT></TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding: 4.8pt 5.4pt 2.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-top: 4.8pt; padding-right: 8.5pt; padding-bottom: 2.4pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&nbsp;Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: right; border-bottom: Black 1.5pt double">683,509,869</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: right; border-bottom: Black 1.5pt double">100.0</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: right; border-bottom: Black 1.5pt double">683,509,869</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: right; border-bottom: Black 1.5pt double">100.0</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 1pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 11.35pt"></TD><TD STYLE="width: 22.7pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">(1)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">As of September 30, 2023, the common
shares traded in Brazil were held by 44,906 shareholders. It includes six shares held by Cia Paulista de Parcerias &ndash; CPP, a company
controlled by the S&atilde;o Paulo State Government.</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 1pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 11.35pt"></TD><TD STYLE="width: 22.7pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">(2)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt">Shares traded as American Depositary
Receipts (ADR) on the New York Stock Exchange, through The Bank New York Mellon, the depositary bank of the Company&rsquo;s ADRs.</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Interest on capital </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/107% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Annual Shareholders' Meeting held on April 28, 2023,
approved the distribution of dividends as interest on capital totaling R$&nbsp;741,301, corresponding to minimum mandatory dividends and
R$&nbsp;130,857 as supplementary minimum dividends, totaling R$&nbsp;872,158, which was paid on June 26, 2023.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>24</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Earnings per share</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>Basic and diluted</B></P>

<P STYLE="font: 10pt/105% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Basic earnings per share are calculated by dividing the
equity attributable to owners by the weighted average number of outstanding common shares during the period. The Company does not have
potentially dilutive common shares outstanding or debts convertible into common shares. Accordingly, basic and diluted earnings per share
are equal.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 48%; padding-bottom: 2pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 13%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>July to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>September</B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="width: 13%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>January to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>September</B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="width: 13%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>July to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>September</B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 13%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>January to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>September</B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; font-size: 9pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif">Profit attributable to the Company&rsquo;s owners</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; font-size: 9pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif">846,295</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; font-size: 9pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif">2,337,250</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; font-size: 9pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif">1,081,060</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; font-size: 9pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif">2,479,057</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; font-size: 9pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif">Weighted average number of common shares issued</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">683,509,869</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">683,509,869</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">683,509,869</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">683,509,869</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; font-size: 9pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 2pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 2pt; font-size: 9pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif">Basic and diluted earnings per share (reais per share)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">1.23816</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">3.41948</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">1.58163</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">3.62695</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/105% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 93 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->91<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>25</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Operating segment information </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company&rsquo;s Management, composed of the Board
of Directors and the Executive Board, has determined the operating segment used to make strategic decisions, such as sanitation services.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Result</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>July to September
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 41%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 21%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Sanitation (i)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 18%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Reconciliation to
    the income statement (ii)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 20%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Balance according
    to the financial statements</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross operating revenue&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">5,539,361</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,332,813</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6,872,174</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross sales deductions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(418,928)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(418,928)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Net operating revenue </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">5,120,433</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,332,813</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,453,246</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Costs, selling, general, and administrative expenses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(3,454,184)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,303,156)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(4,757,340)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before other operating expenses, net and equity accounting </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,666,249</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">29,657</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,695,906</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other operating income (expenses), net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6,028</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Equity accounting</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4,635</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Financial result, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(428,920)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before taxes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,277,649</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Depreciation and amortization</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(713,461)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-&nbsp;&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(713,461)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 94 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->92<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 41%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 21%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Sanitation (i)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 18%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Reconciliation to
    the income statement (ii)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 20%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Balance according
    to the financial statements</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross operating revenue&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">15,640,913</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,775,580</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">19,416,493</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross sales deductions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,110,341)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,110,341)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Net operating revenue </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">14,530,572</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,775,580</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">18,306,152</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Costs, selling, general, and administrative expenses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(10,537,390)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(3,691,003)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(14,228,393)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before other operating expenses, net and equity accounting </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,993,182</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">84,577</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">4,077,759</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other operating income (expenses), net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">71,148</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Equity accounting</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">21,016</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Financial result, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(702,496)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before taxes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,467,427</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Depreciation and amortization</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(2,041,377)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-&nbsp;&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(2,041,377)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; text-indent: 301.2pt">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>July to September
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 41%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 21%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Sanitation (i)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 18%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Reconciliation to
    the income statement (ii)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 20%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Balance according
    to the financial statements</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross operating revenue&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">5,539,361</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,332,813</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6,872,174</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross sales deductions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(418,928)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(418,928)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Net operating revenue </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">5,120,433</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,332,813</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,453,246</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Costs, selling, general, and administrative expenses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(3,454,184)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,303,156)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(4,757,340)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before other operating expenses, net and equity accounting </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,666,249</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">29,657</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,695,906</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other operating income (expenses), net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6,028</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Equity accounting</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6,711</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Financial result, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(430,996)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before taxes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,277,649</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Depreciation and amortization</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(713,461)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-&nbsp;&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(713,461)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 41%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 21%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Sanitation (i)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 18%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Reconciliation to
    the income statement (ii)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 20%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Balance according
    to the financial statements</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross operating revenue&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">15,640,913</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,775,580</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">19,416,493</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross sales deductions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,110,341)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,110,341)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Net operating revenue </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">14,530,572</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,775,580</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">18,306,152</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Costs, selling, general, and administrative expenses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(10,537,390)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(3,691,003)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(14,228,393)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before other operating expenses, net and equity accounting </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,993,182</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">84,577</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">4,077,759</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other operating income (expenses), net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">71,148</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Equity accounting</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">23,092</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Financial result, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(704,572)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before taxes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,467,427</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Depreciation and amortization</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(2,041,377)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(2,041,377)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 97 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->95<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>July to September
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 41%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 21%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Sanitation (i)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 18%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Reconciliation to
    the income statement (ii)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 20%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Balance according
    to the financial statements</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross operating revenue&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">5,012,389</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,350,255</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6,362,644</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross sales deductions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(374,905)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(374,905)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Net operating revenue </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">4,637,484</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,350,255</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">5,987,739</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Costs, selling, general, and administrative expenses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(3,151,290)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,319,898)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(4,471,188)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before other operating expenses, net and equity accounting </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,486,194</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">30,357</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,516,551</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other operating income (expenses), net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(2,787)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Equity accounting</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">5,941</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Financial result, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">118,508</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before taxes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,638,213</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Depreciation and amortization</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(613,711)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(613,711)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->96<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 41%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; width: 21%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Sanitation (i)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 18%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Reconciliation to
    the income statement (ii)</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 20%; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Balance according
    to the financial statements</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross operating revenue&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">13,762,081</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,393,182</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">17,155,263</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross sales deductions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,031,734)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,031,734)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Net operating revenue </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">12,730,347</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,393,182</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">16,123,529</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Costs, selling, general, and administrative expenses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(9,258,316)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(3,316,893)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(12,575,209)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before other operating expenses, net and equity accounting </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,472,031</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">76,289</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,548,320</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Other operating income (expenses), net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,129</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Equity accounting</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">17,448</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Financial result, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">134,257</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Income from operations before taxes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,702,154</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Depreciation and amortization</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(1,801,622)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(1,801,622)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 28.35pt">(i)</TD><TD STYLE="text-align: justify">See Note 31 for further information about non-cash items, other than depreciation and amortization that
impact segment results, and for additional information on long-lived assets.</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/110% Georgia, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 28.35pt">(ii)</TD><TD STYLE="text-align: justify">Construction revenue and related costs are not reported to the CODM. Revenue from construction is recognized
under ICPC 01 (R1) / IFRIC 12 (Concession Agreements) and CPC 47/IFRS 15 (Revenue from Contracts with Customers), as all performance obligations
are met over time. See Note 13 (b) for further information.</TD></TR></TABLE>


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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->97<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>26</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Operating income</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>(a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Reconciliation from gross operating
revenue to net operating revenue:</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0 0 0 14.2pt; text-align: justify; text-indent: -14.2pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD COLSPAN="2">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 44%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>July to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>January to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>July to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 2022</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>January to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 2022</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Revenue from sanitation services (i)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">5,539,361</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">15,640,913</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">5,012,389</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">13,762,081</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Construction revenue</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,332,813</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,775,580</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,350,255</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,393,182</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Sales tax</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(397,781)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,046,901)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(356,454)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(976,380)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Regulation, Control and Oversight Fee (TRCF)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(21,147)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(63,440)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(18,451)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(55,354)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Net revenue</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">6,453,246</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">18,306,152</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">5,987,739</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">16,123,529</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt 14.2pt; text-align: justify">(i) Includes R$&nbsp;27,514 and R$&nbsp;77,268
referring to the TRCF charged from customers from July to September and from January to September 2023 (R$&nbsp;24,042 and R$&nbsp;67,576
from April to June and from January to June 2022), respectively, referring to the municipalities regulated by ARSESP.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>27</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Operating costs and expenses </B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company
    and Consolidated</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 44%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>July to</B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>January to</B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>July to</B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>September 2022</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>January to</B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>September 2022</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Operating costs</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Salaries, payroll charges, and benefits</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(606,845)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(2,214,111)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(583,682)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,684,376)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Pension plan obligations </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(2,099)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(5,940)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(7,598)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(22,144)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Construction costs (Note 25)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,303,156)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(3,691,003)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,319,898)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(3,316,893)</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;General supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(95,075)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(266,688)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(93,015)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(255,430)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Treatment supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(113,231)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(416,668)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(149,871)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(439,670)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 9pt Univers, Helvetica, Sans-Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif">&#9;Outsourced services</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(543,457)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,459,593)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(460,105)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,257,805)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Electricity</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(367,400)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,148,416)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(358,734)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,145,179)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;General expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(251,771)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(718,766)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(230,122)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(634,781)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Depreciation and amortization</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(661,485)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,887,732)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(564,568)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,659,603)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(3,944,519)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(11,808,917)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(3,767,593)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(10,415,881)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  </TABLE>

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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->98<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
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    <TD STYLE="width: 44%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
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<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

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    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

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    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>July to</B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>September 2022</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

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    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>September 2022</B></P>
</DIV></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 44%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Selling expenses</FONT></TD>
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    <TD STYLE="width: 14%; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="width: 14%; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(653)</FONT></TD>
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(524)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(155)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(840)</FONT></TD></TR>
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    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;General expenses</FONT></TD>
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(85,003)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(24,768)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(76,456)</FONT></TD></TR>
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    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Depreciation and amortization</FONT></TD>
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    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(50,710)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(16,769)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(50,171)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(747,968)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(234,054)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(664,166)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 9pt Univers, Helvetica, Sans-Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(536,895)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(135,822)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(566,448)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 9pt Univers, Helvetica, Sans-Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 9pt Univers, Helvetica, Sans-Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif">Administrative expenses</FONT></TD>
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Salaries, payroll charges, and benefits</FONT></TD>
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    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Pension plan obligations</FONT></TD>
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  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;General supplies</FONT></TD>
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(28,508)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
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  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Electricity</FONT></TD>
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  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;General expenses</FONT></TD>
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    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Depreciation and amortization</FONT></TD>
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    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
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    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
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    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
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  <TR STYLE="vertical-align: bottom">
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    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(419,083)</FONT></TD>
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  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Operating costs and expenses</FONT></TD>
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Salaries, payroll charges, and benefits</FONT></TD>
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(93,730)</FONT></TD></TR>
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    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,303,156)</FONT></TD>
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    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,319,898)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(3,316,893)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;General supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(96,569)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(274,434)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(107,811)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(289,206)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 9pt Univers, Helvetica, Sans-Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif">&#9;Treatment supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(113,231)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(416,668)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(149,871)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(439,670)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 9pt Univers, Helvetica, Sans-Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif">&#9;Outsourced services</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(724,478)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,992,551)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(635,343)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,746,788)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Electricity</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(367,964)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,150,538)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(359,349)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,147,384)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;General expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(458,088)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,168,481)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(361,501)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(997,301)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Depreciation and amortization</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(713,461)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(2,041,377)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(613,711)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,801,622)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Tax expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(22,849)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(63,953)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(23,324)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(61,175)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Bad debt expense,&#9; net of recoveries&#9; (Note 9 (c)) </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(156,664)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(536,895)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(135,822)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(566,448)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(4,757,340)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(14,228,393)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: right; border-bottom: Black 1.5pt double">(4,471,188)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: right; border-bottom: Black 1.5pt double">(12,575,209)</P></TD></TR>
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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->99<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
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<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>28</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Financial income (expenses)</B></FONT></TD></TR></TABLE>

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    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
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    <TD STYLE="white-space: nowrap; width: 44%; padding-top: 2.4pt; padding-right: 2.85pt; padding-bottom: 2.4pt; line-height: 110%">&nbsp;</TD>
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    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>July to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0 0; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 14%">
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    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>January to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 2023</B></P>
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    <TD STYLE="vertical-align: bottom; width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>July to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 2022</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>January to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0 0; text-align: center"><B>September 2022</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial expenses</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 10pt/110% Verdana, Helvetica, Sans-Serif; padding: 2.4pt 2.85pt 2.4pt 7.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and charges on borrowings and financing &ndash; local currency </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(297,330)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(824,396)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(271,251)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(676,593)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and charges on borrowings and financing &ndash; foreign currency </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(22,370)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(66,654)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(14,625)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(32,959)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other financial expenses </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(131,018)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(310,674)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(89,156)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(253,105)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Inflation adjustment on borrowings and financing </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(14,563)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(123,126)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">14,689</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(147,365)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other inflation adjustments </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(44,732)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(140,599)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(40,596)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(139,751)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and inflation adjustment on provisions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(51,088)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(141,052)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(3,854)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(97,764)</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 9pt/110% Univers, Helvetica, Sans-Serif; padding: 2.4pt 2.85pt 2.4pt 7.1pt"><FONT STYLE="font-family: Georgia, Times, Serif">Total financial expenses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(561,101)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(1,606,501)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(404,793)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(1,347,537)</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial revenue</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Inflation adjustment gains </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">34,761</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">145,269</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">350,124</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">476,989</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Income on financial investments </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">83,370</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">281,935</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">115,359</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">296,360</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest income </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">72,563</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">207,910</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">61,452</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">203,056</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Cofins and Pasep </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(8,994)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(29,710)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(30,746)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(51,648)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">62</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">79</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">-</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">14</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total financial income</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">181,762</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">605,483</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">496,189</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">924,771</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial income (expenses), net of exchange rate changes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(379,339)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(1,001,018)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">91,396</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(422,766)</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange gain (losses)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange rate changes on borrowings and financing</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(49,911)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">297,623</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">27,258</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">556,474</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange rate changes on assets</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">338</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">909</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(147)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">443</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other exchange rate changes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(8)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(10)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">1</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">106</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange rate changes, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(49,581)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">298,522</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">27,112</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">557,023</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; white-space: nowrap; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial income (expenses)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(428,920)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(702,496)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">118,508</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">134,257</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->100<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="white-space: nowrap; width: 57%; padding-top: 2.4pt; padding-right: 2.85pt; padding-bottom: 2.4pt; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; vertical-align: bottom; width: 43%; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>

<TR>
    <TD STYLE="white-space: nowrap; width: 58%; padding-top: 2.4pt; padding-right: 2.85pt; padding-bottom: 2.4pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 21%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>July to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0 0; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; width: 21%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2.4pt; text-align: center"><B>January to</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0; text-align: center"><B>September 2023</B></P>
</DIV></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial expenses</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 10pt/110% Verdana, Helvetica, Sans-Serif; padding: 2.4pt 2.85pt 2.4pt 7.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and charges on borrowings and financing &ndash; local currency </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(297,330)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(824,396)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and charges on borrowings and financing &ndash; foreign currency </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(22,370)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(66,654)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other financial expenses </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(131,018)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(310,674)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Inflation adjustment on borrowings and financing </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(14,563)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(123,126)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other monetary variations </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(44,732)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(140,599)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and inflation adjustment on provisions</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(51,088)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(141,052)</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 9pt/110% Univers, Helvetica, Sans-Serif; padding: 2.4pt 2.85pt 2.4pt 7.1pt"><FONT STYLE="font-family: Georgia, Times, Serif">Total financial expenses</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(561,101)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(1,606,501)</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial revenue</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Inflation adjustment gains </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">34,761</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">145,269</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Income on financial investments </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">81,294</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">279,859</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest income </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">72,563</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">207,910</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Cofins and Pasep </FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(8,994)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(29,710)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">62</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">79</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total financial income</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">179,686</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">603,407</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial income (expenses), net of exchange rate changes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(381,415)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(1,003,094)</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange gain (losses)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange rate changes on borrowings and financing</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(49,911)</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">297,623</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange rate changes on assets</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">338</FONT></TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">909</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Other exchange rate changes</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(8)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(10)</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Exchange rate changes, net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(49,581)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">298,522</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 5.4pt; vertical-align: bottom; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial income (expenses)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(430,996)</P></TD>
    <TD STYLE="padding-right: 5.4pt; vertical-align: bottom; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(704,572)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 103 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->101<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>29</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Other operating income (expenses),
net</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="white-space: nowrap">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.75pt solid"><B>Parent Company and
    Consolidated</B></P></TD>
    <TD COLSPAN="2">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.75pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 44%; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in; border-bottom: Black 0.75pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>July to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in; border-bottom: Black 0.75pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>January to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2023</B></P>
</DIV></TD>
    <TD STYLE="width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in; border-bottom: Black 0.75pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>July to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2022</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 14%">
<DIV STYLE="margin-right: 2.85pt; margin-left: 2.85pt; padding: 0in; border-bottom: Black 0.75pt solid">

    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>January to </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>September 2022</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Other operating income, net </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">14,281</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">93,241</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">22,115</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">45,985</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Other operating expenses </FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.75pt solid">(8,253)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.75pt solid">(22,093)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.75pt solid">(24,902)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.75pt solid">(43,856)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Other operating income (expenses), net</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">6,028</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">71,148</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">(2,787)</P></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">2,129</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Other operating income includes revenue from the sale
of property, plant and equipment, contracts awarded in public bids, right to sell electricity, indemnities and reimbursement of expenses,
fines and guarantees, property leases, reuse water, PURA projects and services, net of Cofins and Pasep.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">Other operating expenses usually record the derecognition
of concession assets due to obsolescence, discontinued construction works, unproductive wells, projects considered economically unfeasible,
losses on property, plant and equipment, estimated losses, and operational assets indemnification.</P>

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>30</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Commitments</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">The Company has agreements to manage and maintain its
activities, as well as to build new projects aiming at achieving the objectives proposed in its target plan. The main unrecognized committed
amounts as of September 30, 2023 are as follows:</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom; background-color: white">
    <TD STYLE="white-space: nowrap; width: 35%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 13%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>1 year</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 13%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>1-3 years</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 13%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>3-5 years</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 13%; padding-right: 3.5pt; padding-left: 3.5pt">
<DIV STYLE="padding: 0in 0in 1pt; border-bottom: Black 0.5pt solid">

    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center"><B>More than</B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center"><B>5 years</B></P>
</DIV></TD>
    <TD STYLE="white-space: nowrap; width: 13%; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Total</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: white">
    <TD STYLE="white-space: nowrap; padding-top: 1pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Contractual obligations &ndash; Expenses </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,215,485</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,431,822</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">262,859</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">604,943</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,515,109</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: white">
    <TD STYLE="white-space: nowrap; padding-top: 1pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Contractual obligations - Investments</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,305,298</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">4,239,732</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,824,677</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">105,800</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">9,475,507</P></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: white">
    <TD STYLE="white-space: nowrap; padding-top: 1pt; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,520,783</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">5,671,554</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">2,087,536</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">710,743</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">12,990,616</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 104 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->102<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD><P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Quarterly Information</B></P></TD><TD>&nbsp;</TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>31</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Supplemental cash flow information</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Parent Company</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 62%; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 19%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2023</B></P></TD>
    <TD STYLE="padding-right: 5.4pt; width: 19%; padding-left: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total additions to contract assets (Note 13)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,734,020</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,559,587</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total additions to intangible assets (Note 14 (b))</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">112,518</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">51,136</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Items not affecting cash (see breakdown </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt; line-height: 110%">below</FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,637,045)</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,103,092)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total additions to intangible and contract assets according to the statement of cash flows</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,209,493</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,507,631</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Investments and financing operations affecting intangible assets but not cash:</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest capitalized in the period (Note 13 (a))</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">499,614</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">458,786</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Contractors payable</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">496,897</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">276,409</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Performance agreements</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">448,124</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">249,661</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Right of use </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">107,833</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">41,947</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Construction margin (Note 25)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">84,577</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">76,289</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,637,045</P></TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,103,092</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 11pt Arial, Helvetica, Sans-Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 77%; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; width: 23%; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Consolidated</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to September
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total additions to contract assets (Note 13)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,734,020</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total additions to intangible assets (Note 14 (b))</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">260,518</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Items not affecting cash (see breakdown </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt; line-height: 110%">below</FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,637,045)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total additions to intangible and contract assets according to the statement of cash flows</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,357,493</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Investments and financing operations affecting intangible assets but not cash:</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest capitalized in the period (Note 13 (a))</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">499,614</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Contractors payable</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">496,897</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Performance agreements</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">448,124</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Right of use </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">107,833</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Construction margin (Note 25)</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">84,577</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-bottom: 1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 5.4pt; white-space: nowrap; padding-left: 5.4pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,637,045</P></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 105; Options: NewSection; Value: 103 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->103<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 9.5pt Georgia, Times, Serif; margin: 0 56.4pt 0 14.2pt; text-align: justify"><B></B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Projections</B></P>
<P STYLE="font: 9.5pt Georgia, Times, Serif; margin: 0 56.4pt 0 14.2pt; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 9.5pt Georgia, Times, Serif; margin: 0 56.4pt 0 14.2pt; text-align: justify"><B>Comments on the Company&rsquo;s Projections</B></P>

<P STYLE="font: 9.5pt Georgia, Times, Serif; margin: 0 56.4pt 0 14.2pt"><B>&nbsp;</B></P>

<P STYLE="font: 9.5pt Georgia, Times, Serif; margin: 4.1pt 56.4pt 0 14.2pt"><B>&nbsp;</B></P>

<P STYLE="font: 9.5pt/112% Georgia, Times, Serif; margin: 0 56.4pt 0 14.2pt; text-align: justify">The projections presented in the Reference
Form are annual and not on a quarterly basis. Therefore, the quarterly comparison between information disclosed in the Reference Form
and quarterly results shall not apply.</P>

<P STYLE="font: 9.5pt Georgia, Times, Serif; margin: 1.2pt 56.4pt 0 14.2pt">&nbsp;</P>

<P STYLE="font: 9.5pt Georgia, Times, Serif; margin: 0 56.4pt 0 14.2pt; text-align: justify">Projections are monitored every year and
disclosed in the Reference Form.</P>


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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->104<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0.6pt 0 0 1pt"><B>Other Information Deemed as Relevant by the Company</B></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0.6pt 0 0 1pt">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0 68.75pt 0 65.05pt; text-indent: 0in"><B>1.<FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 7pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT>CHANGES IN INTEREST HELD BY THE CONTROLLING SHAREHOLDER, BOARD MEMBERS, AND EXECUTIVE OFFICERS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 2.35pt 0 0.05pt"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top; background-color: silver">
    <TD COLSPAN="5" STYLE="border: black 1pt solid">
    <P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0 67.75pt 0 68.55pt; text-align: center"><B>CONSOLIDATED SHAREHOLDING POSITION
    OF CONTROLLING SHAREHOLDERS AND MANAGEMENT, AND OUTSTANDING SHARES </B></P>
    <P STYLE="font: 11pt/11.65pt Times New Roman, Times, Serif; margin: 0 0 0 0.85pt; text-align: center"><B>Position as of 09/30/2023</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 35%; border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 12.65pt; padding-left: 0.65pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Shareholder</B></FONT></TD>
    <TD STYLE="width: 21%; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-right: 3.45pt; padding-left: 4.35pt; line-height: 12.7pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Number of Common Shares (Units)</B></FONT></TD>
    <TD STYLE="width: 9%; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 12.65pt; padding-left: 0.9pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>%</B></FONT></TD>
    <TD STYLE="width: 23%; border-bottom: black 1pt solid; border-right: black 1pt solid">
    <P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0 8.15pt 0 9.1pt; text-align: center"><B>Total Number of Shares</B></P>
    <P STYLE="font: 11pt/11.65pt Times New Roman, Times, Serif; margin: 0 8.35pt 0 9.1pt; text-align: center"><B>(Units)</B></P></TD>
    <TD STYLE="width: 12%; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 12.65pt; padding-left: 1.05pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.15pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Controlling Shareholder</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Treasury Department</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.45pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">343,506,664</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.5pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">50.3%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.55pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">343,506,664</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">50.3%</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid">
    <P STYLE="font: 11pt/12.55pt Times New Roman, Times, Serif; margin: 0 0 0 3.45pt; text-align: left">Companhia Paulista de Parcerias</P>
    <P STYLE="font: 11pt/11.7pt Times New Roman, Times, Serif; margin: 0 0 0 3.45pt; text-align: left">- CPP</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">6</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-right: 2.6pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">6</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-right: 2.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.35pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Management</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.25pt; padding-left: 3.45pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Board of Directors</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.25pt; padding-right: 2.55pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">1,100</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.25pt; padding-right: 2.55pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.25pt; padding-right: 2.6pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">1,100</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.25pt; padding-right: 2.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Executive Board</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.6pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">1.300</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.55pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.65pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">1.300</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.35pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Fiscal Council</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.2pt; padding-right: 5.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">110</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.2pt; padding-right: 5.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.2pt; padding-right: 5.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">110</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.2pt; padding-right: 5.15pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.35pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Treasury Shares</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.65pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.65pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.45pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.35pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Other Shareholders</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Total</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.6pt; line-height: 11.65pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>343,509,180</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.55pt; line-height: 11.65pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>50.3%</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.6pt; line-height: 11.65pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>343,509,180</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.35pt; line-height: 11.65pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>50.3%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.25pt; padding-left: 3.45pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Outstanding Shares</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.25pt; padding-right: 2.65pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">340,000,689</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.25pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">49.7%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.25pt; padding-right: 2.55pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">340,000,689</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.25pt; padding-right: 2.35pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">49.7%</FONT></TD></TR>
  </TABLE>

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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->105<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Other Information Deemed as Relevant by the Company</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top; background-color: silver">
    <TD COLSPAN="5" STYLE="border: black 1pt solid">
    <P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0 67.75pt 0 68.55pt; text-align: center"><B>CONSOLIDATED SHAREHOLDING POSITION
    OF CONTROLLING SHAREHOLDERS AND MANAGEMENT, AND OUTSTANDING SHARES </B></P>
    <P STYLE="font: 11pt/11.65pt Times New Roman, Times, Serif; margin: 0.05pt 0 0 0.85pt; text-align: center"><B>Position as of 09/30/2022</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 35%; border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 12.65pt; padding-left: 0.65pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Shareholder</B></FONT></TD>
    <TD STYLE="width: 21%; border-bottom: black 1pt solid; border-right: black 1pt solid">
    <P STYLE="font: 11pt/12.65pt Times New Roman, Times, Serif; margin: 0 3.55pt 0 4.35pt; text-align: center"><B>Number of</B></P>
    <P STYLE="font: 11pt/12.6pt Times New Roman, Times, Serif; margin: 0 3.45pt 0 4.35pt; text-align: center"><B>Common Shares (Units)</B></P></TD>
    <TD STYLE="width: 9%; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 12.65pt; padding-left: 0.9pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>%</B></FONT></TD>
    <TD STYLE="width: 23%; border-bottom: black 1pt solid; border-right: black 1pt solid">
    <P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0 8.15pt 0 9.1pt; text-align: center"><B>Total Number of Shares</B></P>
    <P STYLE="font: 11pt/11.6pt Times New Roman, Times, Serif; margin: 0 8.35pt 0 9.1pt; text-align: center"><B>(Units)</B></P></TD>
    <TD STYLE="width: 12%; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 12.65pt; padding-left: 1.05pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.35pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Controlling Shareholder</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Treasury Department</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.35pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">343,506,664</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">50.3%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.5pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">343,506,664</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.3pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">50.3%</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid">
    <P STYLE="font: 11pt/12.55pt Times New Roman, Times, Serif; margin: 0 0 0 3.45pt; text-align: left">Companhia Paulista de Parcerias</P>
    <P STYLE="font: 11pt/11.7pt Times New Roman, Times, Serif; margin: 0 0 0 3.45pt; text-align: left">- CPP</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">6</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-right: 2.6pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">6</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-right: 2.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Management</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Board of Directors</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.55pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">100</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.55pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.6pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">100</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.35pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">0%</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Executive Board</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.65pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.65pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.65pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.35pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Fiscal Council</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.45pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Treasury Shares</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.2pt; padding-right: 2.65pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.2pt; padding-right: 2.65pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.2pt; padding-right: 2.7pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.2pt; padding-right: 2.45pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.35pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Other Shareholders</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 5.45pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 5.45pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 5.45pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 5.2pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">-</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.35pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Total</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.35pt; padding-right: 2.6pt; line-height: 11.65pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>343,506,770</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.35pt; padding-right: 2.55pt; line-height: 11.65pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>50.3%</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.35pt; padding-right: 2.6pt; line-height: 11.65pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>343,506,770</B></FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.35pt; padding-right: 2.35pt; line-height: 11.65pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>50.3%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; text-align: left">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 4.3pt; padding-left: 3.45pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Outstanding Shares</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.6pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">340,003,099</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.6pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">49.7%</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.6pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">340,003,099</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 4.3pt; padding-right: 2.4pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">49.7%</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0.25pt 0 0"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Times New Roman, Times, Serif; margin-top: 0.05pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 65.05pt"></TD><TD STYLE="width: 21.3pt"><B>2.</B></TD><TD><B>SHAREHOLDING POSITION</B></TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 3.45pt 0 0.05pt"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top; background-color: silver">
    <TD COLSPAN="5" STYLE="border: black 1pt solid; padding-right: 20.6pt; padding-left: 3.45pt; line-height: 12.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>SHAREHOLDING POSITION OF HOLDERS OF MORE THAN 5% OF EACH TYPE AND CLASS OF COMPANY SHARES, UP TO THE INDIVIDUAL LEVEL</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top; background-color: silver">
    <TD COLSPAN="3" STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid">
    <P STYLE="font: 11pt/12.5pt Times New Roman, Times, Serif; margin: 0 0 0 3.45pt; text-align: left"><B>Company:</B></P>
    <P STYLE="font: 11pt/11.65pt Times New Roman, Times, Serif; margin: 0 0 0 3.45pt; text-align: left"><B>CIA SANEAMENTO B&Aacute;SICO ESTADO
    S&Atilde;O PAULO</B></P></TD>
    <TD COLSPAN="2" STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-right: 13.75pt; padding-left: 58.15pt; line-height: 12.7pt; text-align: left; text-indent: -25.6pt"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Position as of 09/30/2023 (Number of shares)</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; text-align: left">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 6.95pt; padding-left: 29.05pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Common Shares</B></FONT></TD>
    <TD COLSPAN="2" STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 6.95pt; padding-left: 1.15pt; line-height: 11.65pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Total</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 33%; border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 7.15pt; padding-left: 3.45pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Shareholder</B></FONT></TD>
    <TD STYLE="width: 21%; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 7.15pt; padding-left: 19.9pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Number of Shares</B></FONT></TD>
    <TD STYLE="width: 9%; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 7.15pt; padding-left: 0.95pt; line-height: 11.65pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>%</B></FONT></TD>
    <TD STYLE="width: 22%; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 7.15pt; padding-left: 22.4pt; line-height: 11.65pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>Number of Shares</B></FONT></TD>
    <TD STYLE="width: 15%; border-bottom: black 1pt solid; border-right: black 1pt solid; padding-top: 7.15pt; padding-left: 1.15pt; line-height: 11.65pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; padding-top: 12.55pt; padding-left: 3.45pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">Treasury Department</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-left: 36.7pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">343,506,664</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-left: 22.4pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">50.3</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-left: 41.65pt; line-height: 11.7pt; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif">343,506,664</FONT></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; padding-top: 12.55pt; padding-right: 2.35pt; line-height: 11.7pt; text-align: right"><FONT STYLE="font-family: Times New Roman, Times, Serif">50.3</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>


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    <!-- Field: /Page -->

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0 10.2pt 0 0">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Reports and Statements / Unqualified Report on Special Review</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">(Free translation from the original issued in Portuguese. In the event of
any discrepancies, the Portuguese language version shall prevail.)</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">INDEPENDENT AUDITOR&rsquo;S REVIEW REPORT ON THE INDIVIDUAL
AND CONSOLIDATED INTERIM FINANCIAL INFORMATION</P>

<P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">To the</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">Shareholders and Management of</P>

<P STYLE="font: bold 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify; text-indent: 0in">Companhia de Saneamento B&aacute;sico
do Estado de S&atilde;o Paulo - SABESP</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">S&atilde;o Paulo - SP</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="color: #98002E; font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>Introduction</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">We have reviewed the interim financial information of
<B>Companhia de Saneamento B&aacute;sico do Estado de S&atilde;o Paulo (&ldquo;Company&rdquo;)</B>, included in the Quarterly Information,
for the quarter ended September 30, 2023, which comprise the interim statements of financial position as at September 30, 2023, and the
respective interim statements of income and comprehensive income for the three- and nine-month periods then ended, and the interim statements
of changes in equity and cash flows for the nine-month period then ended, as well as the corresponding notes.</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">The Company&rsquo;s Management is responsible for the
preparation of this interim financial information, in accordance with NBC TG 21 (R4) and International Accounting Standard (IAS) 34 -
Interim Financial Reporting, issued by the International Accounting Standards Board (IASB), and for its presentation in accordance with
standards issued by the Brazilian Securities and Exchange Commission (CVM) applicable to Quarterly Information. Our responsibility is
to express a conclusion on this interim financial information based on our review.</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify; color: #98002E"><B>Scope of the review</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">We conducted our review in accordance with Brazilian
and international standards on review engagements (NBC TR 2410 and ISRE 2410 - Review of Interim Financial Information Performed by the
Independent Auditor of the Entity). A review of interim financial information consists principally of applying analytical and other review
procedures and making enquiries of and having discussions with persons responsible for financial and accounting matters. An interim review
is substantially less in scope than an audit conducted in accordance with auditing standards, and has not provided us assurance that we
would become aware of any or all significant matters that might be identified in an audit. Accordingly, we do not express such an audit
opinion.</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify; color: #98002E"><B>Conclusion on the interim financial
information </B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">Based on our review, we are not aware of any fact that
would lead us to believe that the individual and consolidated interim financial information included in the quarterly information referred
to above has not been prepared, in all material respects, in accordance with NBC TG 21 (R4) and IAS 34, applicable to Quarterly Information
(ITR), and presented in accordance with the standards issued by CVM.</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt">&nbsp;</P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="border-collapse: collapse; font: 11pt Arial, Helvetica, Sans-Serif; width: 100%"><TR STYLE="vertical-align: top; text-align: left"><TD STYLE="width: 90%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">ITR - Quarterly Information Form - 09/30/2023 - CIA SANEAMENTO BASICO EST SAO PAULO</P><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P></TD><TD STYLE="width: 10%"><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">Version : 1</P></TD></TR><TR STYLE="vertical-align: top; text-align: left"><TD>&nbsp;</TD><TD>&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Reports and Statements / Unqualified Report on Special Review</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0">(Free translation from the original issued in Portuguese. In the event of
any discrepancies, the Portuguese language version shall prevail.)</P>


<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: justify; text-indent: -21.3pt">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify; color: #98002E"><B>Other matters</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>Interim statements of value added (DVA)</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">The interim financial information referred to above includes
the statements of value added for the nine-month period ended September 30, 2023, prepared under the responsibility of the Company&rsquo;s
Management and presented as supplementary information for the purposes of IAS 34. These statements were submitted to review procedures
executed with the review of the interim financial information, with the purpose of concluding whether they are reconciled with the interim
financial information and accounting records, as applicable, and if their form and contents meet the criteria defined in NBC TG 09 &ndash;
Statement of Value Added. Based on our review, we are not aware of any fact that would lead us to believe that these statements of value
added were not prepared, in all material respects, in accordance with the criteria established in this standard and consistently with
the interim financial information taken as a whole.</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>Audit and review of financial statements and comparative
quarterly information</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">The quarterly information mentioned in the first paragraph
includes financial information corresponding to income (loss), changes in equity, cash flows and added value for the quarter ended September
30, 2022, obtained from its quarterly information, and to the statements of financial position as at December 31, 2022, obtained from
the financial statements as at December 31, 2022, presented for comparison purposes. The review of the financial information for the period
ended September 30, 2022, and the audit of the financial statements for the year ended December 31, 2022, were conducted under the responsibility
of other independent auditors, whose review and audit reports thereon, dated August&nbsp;10, 2023 and March 23, 2023.</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">The accompanying financial information has been translated
into English for the convenience of readers outside Brazil.</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: right">S&atilde;o Paulo, November 09, 2023.</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 11pt Arial, Helvetica, Sans-Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 100%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify"><FONT STYLE="font-family: Trebuchet MS, Times, Serif"><B><IMG SRC="image_001.jpg" ALT="" STYLE="height: 25.2pt; width: 60.6pt"></B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 11pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>BDO RCS Auditores Independentes SS Ltda.</B></P>
    <P STYLE="font: 11pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-variant: small-caps"><B>CRC 2 SP 013846/O-1</B></FONT></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">
    <P STYLE="font: 11pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>
    <P STYLE="font: 11pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P></TD></TR>
  </TABLE>
<P STYLE="font: bold 11pt Trebuchet MS, Times, Serif; margin: 0">D&aacute;rio Vieira de Lima</P>

<P STYLE="font: bold 11pt Trebuchet MS, Times, Serif; margin: 0">Accountant CRC 1 SP 238754/O-6</P>


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    <!-- Field: /Page -->

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Reports and Statements / Executive Officers&rsquo; Statement on the Financial
Statements</B></P>
<P STYLE="font: 9pt/192% Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 9pt/192% Arial, Helvetica, Sans-Serif; margin: 0">Executive Officers&rsquo; Statement on the Quarterly Information STATEMENT</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0.35pt 0 0; text-align: justify">The Executive Officers of Companhia de
Saneamento B&aacute;sico do Estado de S&atilde;o Paulo - SABESP, with Corporate Taxpayers&rsquo; ID (CNPJ/MF) number 43.776.517/0001-80,
headquartered at Rua Costa Carvalho, n&ordm; 300, Pinheiros, S&atilde;o Paulo, declare that, according to paragraph 1 of article 27, item
VI of CVM Resolution 80, of March 29, 2022, that:</P>

<P STYLE="font: 9pt/192% Arial, Helvetica, Sans-Serif; margin: 9.65pt 0 0; text-align: justify">They reviewed, discussed, and agreed with
the quarterly information for the period ended September 30, 2023.</P>

<P STYLE="font: 9pt/192% Arial, Helvetica, Sans-Serif; margin: 9.65pt 0 0; text-align: justify">S&atilde;o Paulo, November 9, 2023.</P>

<P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.1pt 0 0; text-align: justify">Companhia de Saneamento B&aacute;sico do Estado
de S&atilde;o Paulo - SABESP</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 9.9pt 0 0">Andr&eacute; Gustavo Salcedo Teixeira Mendes<BR>
CEO</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 9.7pt 0 0">Catia Cristina Teixeira Pereira</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Chief Economic, Financial, and Investor Relations Officer</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 9.95pt 0 0">Sabrina de Menezes Correa Furstenau Sabino<BR>
People and Corporate Management Officer</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 9.9pt 0 0">Paula Alessandra Bonin Costa Violante<BR>
Engineering and Innovation Officer</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 9.7pt 0 0">Roberval Tavares de Souza</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Operation and Maintenance Officer</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 9.7pt 0 0">Bruno Magalh&atilde;es D'Abadia</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Regulation and New Businesses Officer</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 9.9pt 0 0">Caio Marcelo de Medeiros Melo<BR>
Customers Officer</P>


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    <!-- Field: /Page -->

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Reports and Statements / Executive Officers&rsquo; Statement on the Report
of Independent Registered Public Accounting Firm Statements</B></P>
<P STYLE="font: 9pt/192% Arial, Helvetica, Sans-Serif; margin: 8.4pt 0 0">Executive Officers&rsquo; Statement on the Report of Independent
Registered Public Accounting Firm STATEMENT</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0.35pt 0 0; text-align: justify">The Executive Officers of Companhia de
Saneamento B&aacute;sico do Estado de S&atilde;o Paulo - SABESP, with Corporate Taxpayers&rsquo; ID (CNPJ/MF) number 43.776.517/0001-80,
headquartered at Rua Costa Carvalho, n&ordm; 300, Pinheiros, S&atilde;o Paulo, declare that, according to paragraph 1 of article 27, item
V of CVM Resolution 80, of March 29, 2022, that:</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 9.9pt 0 0">They reviewed, discussed, and agreed with the Report of Independent
Registered Public Accounting Firm on the quarterly information for the period ended September 30, 2023.</P>

<P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 9.7pt 0 0">S&atilde;o Paulo, November 9, 2023.</P>

<P STYLE="font: 9pt/20pt Arial, Helvetica, Sans-Serif; margin: 0">Companhia de Saneamento B&aacute;sico do Estado de S&atilde;o Paulo
- SABESP</P>

<P STYLE="font: 9pt/20pt Arial, Helvetica, Sans-Serif; margin: 0">Andr&eacute; Gustavo Salcedo Teixeira Mendes</P>

<P STYLE="font: 9pt/10pt Arial, Helvetica, Sans-Serif; margin: 0">CEO</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 9.65pt 0 0">Catia Cristina Teixeira Pereira</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Chief Economic, Financial, and Investor Relations Officer</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 9.95pt 0 0">Sabrina de Menezes Correa Furstenau Sabino<BR>
People and Corporate Management Officer</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 9.95pt 0 0">Paula Alessandra Bonin Costa Violante<BR>
Engineering and Innovation Officer</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 9.7pt 0 0">Roberval Tavares de Souza</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Operation and Maintenance Officer</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 9.65pt 0 0">Bruno Magalh&atilde;es D'Abadia</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Regulation and New Businesses Officer</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 9.9pt 0 0">Caio Marcelo de Medeiros Melo<BR>
Customers Officer</P>

<P STYLE="font: 10pt/11.7pt Georgia, Times, Serif; margin: 0">&nbsp;</P>



<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 0.5pt; text-align: justify"></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 0.5pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 0.5pt; text-align: justify"></P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%"><P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">&nbsp;</P><P STYLE="text-align: right; font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.7pt 0 0 1pt">PAGE: <!-- Field: Sequence; Type: Arabic; Name: PageNo -->110<!-- Field: /Sequence --> of 110</P></TD></TR></TABLE>
<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 0.5pt; text-align: justify"></P>

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<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B><U></U></B></FONT>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B><U>SIGNATURE&nbsp;</U></B></FONT><FONT size=1>&nbsp;</FONT></DIV>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

<DIV align=justify><FONT color=#000000 size=3 face="Times New Roman">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in the city S&#227;o Paulo, Brazil. <BR></FONT></DIV>

<DIV align=justify><FONT color=#000000 size=3 face="Times New Roman">Date:&nbsp;November 24, 2023</FONT></DIV>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

<DIV align=center>

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<TR>

   <TD vAlign=top width="50%" colSpan=3>

   <DIV align=left><FONT color=#000000 size=3 face="Times New Roman"><B>Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo - SABESP </B></FONT></DIV></TD></TR>

<TR>

   <TD height=16></TD>

   <TD height=16></TD>

   <TD height=16></TD></TR>

<TR>

   <TD vAlign=top align=left><FONT color=#000000 size=2 face="Times New Roman">By:</FONT></TD>

   <TD vAlign=bottom align=left>/s/&nbsp;&nbsp;<FONT style="FONT-FAMILY: times new roman" size=3>Catia Cristina Teixeira Pereira</FONT>&nbsp;&nbsp;&nbsp;&nbsp;

   <HR align=left color=#000000 SIZE=1 noShade>

</TD>

   <TD></TD></TR>

<TR>

   <TD><FONT size=1>&nbsp;</FONT></TD>

   <TD vAlign=bottom width="53%" align=center>

   <DIV align=left><FONT color=#000000 size=2 face="Times New Roman">Name: Catia Cristina Teixeira Pereira </FONT></DIV>

   <DIV align=left><FONT color=#000000 size=2 face="Times New Roman">Title: Chief Financial Officer and Investor Relations Officer </FONT></DIV></TD>

   <TD></TD></TR></TABLE></DIV>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

<P>&nbsp;</P>

<DIV><FONT size=1></FONT>&nbsp;</DIV>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B>FORWARD-LOOKING STATEMENTS </B></FONT></DIV>

<P align=justify><FONT size=2 face="'Times New Roman, Times, Serif'">This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations. </FONT></P>

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