<SEC-DOCUMENT>0001292814-23-002466.txt : 20230530
<SEC-HEADER>0001292814-23-002466.hdr.sgml : 20230530
<ACCEPTANCE-DATETIME>20230530082658
ACCESSION NUMBER:		0001292814-23-002466
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230331
FILED AS OF DATE:		20230530
DATE AS OF CHANGE:		20230530

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:		23971554

	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>sbsitr1q23_6k.htm
<DESCRIPTION>6-K
<TEXT>
<HTML>
<HEAD>
<TITLE></TITLE>
</HEAD>
<BODY>



<HR align=left color=#000000 SIZE=2 noShade>



<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>

<HR align=center color=#000000 SIZE=1 width="25%" noShade>



<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;May, 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>

<HR align=center color=#000000 SIZE=1 width="25%" noShade>



<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>

<HR align=center color=#000000 SIZE=1 width="25%" noShade>

<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>

<HR align=center color=#000000 SIZE=1 width="25%" noShade>

<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>


<!-- Field: Page; Sequence: 1 -->
    <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%">&nbsp;</TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<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 - 03/31/2023 - 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>

<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: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 8pt"><B>Table of Contents </B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 8pt"><B>&nbsp;</B></P>
<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; border-collapse: collapse; font-size: 9pt">
<tr>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font: bold 9.5pt Times New Roman, serif; vertical-align: middle; width: 95%; padding-bottom: 5pt">&nbsp;</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font: 11pt Calibri, sans-serif; vertical-align: bottom; width: 5%; padding-bottom: 5pt">&nbsp;</td></tr>
  <tr>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font: bold 11pt Arial, sans-serif; vertical-align: middle; text-align: left; padding-bottom: 5pt">Company Information</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font: 11pt Calibri, sans-serif; vertical-align: bottom; padding-bottom: 5pt">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Capital Breakdown</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">1</td></tr>
  <tr>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font: bold 11pt Arial, sans-serif; vertical-align: middle; text-align: left; padding-bottom: 5pt">Parent Company&rsquo;s Financial Statements</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font: 11pt Calibri, sans-serif; vertical-align: bottom; padding-bottom: 5pt">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Statement of Financial Position &ndash; Assets</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">2</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Statement of Financial Position &ndash; Liabilities</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">3</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Income Statement</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">5</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Statement of Comprehensive Income</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">6</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Statement of Cash Flows (Indirect Method)</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">7</td></tr>
  <tr>
    <td style="border-bottom: Gray 1pt dashed; padding-left: 3%; padding-top: 5pt; font-weight: bold; font-family: Arial, sans-serif; vertical-align: middle; text-align: left; padding-bottom: 5pt">Statement of Changes in Equity</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font: 11pt Calibri, sans-serif; vertical-align: bottom; padding-bottom: 5pt">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 3%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">01/01/2023 to 03/31/2023</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">9</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 3%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">01/01/2022 to 03/31/2022</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">10</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Statement of Value Added</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">11</td></tr>
  <tr style="vertical-align: middle">
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Comments on the Company&rsquo;s Performance</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">12</td></tr>
  <tr style="vertical-align: middle">
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Notes to the Financial Statements</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">22</td></tr>
  <tr style="vertical-align: middle">
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Comments on the Company&rsquo;s Projections</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">78</td></tr>
  <tr style="vertical-align: middle">
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Other Information Deemed as Relevant by the Company</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">79</td></tr>
  <tr>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font: bold 11pt Arial, sans-serif; vertical-align: middle; text-align: left; padding-bottom: 5pt">Reports and Statements</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font: 11pt Calibri, sans-serif; vertical-align: bottom; padding-bottom: 5pt">&nbsp;</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Unqualified Reports on Special Review</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">81</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Executive Officers&rsquo; Statement on the Financial Statements</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">82</td></tr>
  <tr style="vertical-align: middle">
    <td style="border-bottom: Gray 1pt dashed; padding-left: 1.5%; padding-top: 5pt; font-family: Arial, sans-serif; text-align: left; padding-bottom: 5pt">Executive         Officers&rsquo; Statement on the Report of Independent Registered Public Accounting Firm</td>
    <td style="padding-top: 5pt; border-bottom: Gray 1pt dashed; font-family: Arial, sans-serif; text-align: right; padding-bottom: 5pt">83</td></tr>
</table>
<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 8pt"></P>


<!-- Field: Page; Sequence: 2 -->
    <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%">&nbsp;</TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<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 - 03/31/2023 - 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>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 4.1pt 0 6pt">&nbsp;</P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 4.1pt 0 6pt 7.1pt"><B>Company Information / Capital Breakdown</B></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 4.1pt 0 6pt"><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: #D2D2D2">
    <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>03/31/2023</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-in 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>
  </TABLE>
<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 3; Options: NewSection -->
    <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%">&nbsp;</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 - 03/31/2023 - 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: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Parent Company&rsquo;s Financial Statements / Statement of Financial
Position &ndash; Assets</B></P>

<P STYLE="font: 2pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>(R$ thousand)<BR>
<BR>
</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>03/31/2023</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">56,926,791</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">6,403,756</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">836,450</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">1,649,313</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">1,649,313</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">3,392,786</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">Trade Receivables</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.65pt; text-align: right"><FONT STYLE="font-size: 9pt">3,194,099</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">198,687</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">198,687</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">117,296</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">266,437</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">266,437</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">141,474</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">141,474</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">48,301</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">93,173</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">50,523,035</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">10,217,699</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">213,390</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">213,390</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">958,670</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">958,670</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">9,045,639</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">175,872</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">9,168</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">8,714,054</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">146,545</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">196,265</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">149,551</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">117,304</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">46,714</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">364,870</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">39,744,201</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">39,744,201</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">1,122,094</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">19,904,574</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">18,081,949</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">577,503</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: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">58,081</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: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></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%">&nbsp;</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 - 03/31/2023 - 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 Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Parent Company&rsquo;s Financial Statements / Statement of Financial
Position &ndash; Liabilities</B></P>

<P STYLE="font: 2pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

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

<P STYLE="font: 2pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 2pt Arial, Helvetica, Sans-Serif; margin: 0"><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">
    <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>03/31/2023</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">56,926,791</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">6,163,795</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">Labor and Social Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">495,529</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">34,205</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">461,324</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">257,746</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">257,746</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">338,254</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">332,110</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">122,165</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">110,329</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">43,921</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">55,695</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">6,144</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">1,976,816</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">1,308,566</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">1,009,732</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">298,834</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">562,407</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">105,843</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 Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,184,402</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">1,694</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">1,694</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">2,182,708</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">741,725</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">604,532</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">30,256</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">62,601</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">225,982</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">9,272</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 Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">508,340</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">911,048</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">523,686</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">35,365</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">Labor Liabilities and Pension Plan Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">402,266</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: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">86,055</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">387,362</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: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">2,983</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">121,510</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">262,869</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">22,682,251</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">16,319,107</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">8,907,163</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">6,571,995</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">2,335,168</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">7,084,987</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%">&nbsp;</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 - 03/31/2023 - 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 Arial, Helvetica, Sans-Serif; margin: 0"><B>Parent Company&rsquo;s Financial Statements / Statement of Financial
Position &ndash; Liabilities</B></P>

<P STYLE="font: 2pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 2pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

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

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><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">
    <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>03/31/2023</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">326,957</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 Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">5,433,458</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">5,433,458</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">2,143,788</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">12,322</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">2,647,480</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">17,199</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 Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">1,619</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">161,314</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 Liabilities</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">449,736</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: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">191,523</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: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">191,523</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: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">191,523</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">738,163</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">300,537</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">40,041</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">Labor Liabilities and Pension Plan Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">242,639</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: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">17,857</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">437,626</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">430,791</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">6,176</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: 20.6pt; text-align: right"><FONT STYLE="font-size: 9pt">659</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">28,080,745</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">12,155,890</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: 20.55pt; text-align: right"><FONT STYLE="font-size: 9pt">76,927</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">747,212</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%">&nbsp;</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 - 03/31/2023 - 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 Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 12pt/120% Arial, Helvetica, Sans-Serif; margin: 0"><B>Parent Company&rsquo;s Financial Statements / Income Statement</B></P>

<P STYLE="font: 2pt/120% Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 12pt/120% Arial, Helvetica, Sans-Serif; margin: 0"><B>(R$ thousand)</B></P>

<P STYLE="font: 3pt/120% Arial, Helvetica, Sans-Serif; margin: 0"><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">
    <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: 48%; padding-left: 7.75pt; line-height: 10.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%">
    <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 03/31/2023</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 03/31/2022</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">3.01</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Revenue from Sales and/or Services</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">5,698,369</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">4,870,390</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Cost of Sales and/or Services</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-3,653,723</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-3,116,386</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">3.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Cost of Sales and/or Services</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,500,708</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,248,865</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">3.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Construction Costs</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,153,015</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-867,521</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Gross Profit</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">2,044,646</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">1,754,004</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">3.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Operating Income/Expenses</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-652,173</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-619,926</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Selling Expenses</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-388,462</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-374,281</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.04.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Selling Expenses</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-225,657</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-196,587</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">3.04.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Allowance for Doubtful Accounts</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-162,805</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-177,694</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">3.04.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">General and Administrative Expenses</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-284,679</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-253,792</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">3.04.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Operating Income</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">20,352</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">10,308</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.04.04.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Operating Income</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">23,045</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">11,405</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.04.04.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Cofins and Pasep</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,693</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,097</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">3.04.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Other Operating Expenses</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-5,718</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-7,744</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.04.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Equity Results of Investments in Affiliates</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">6,334</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">5,583</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.05</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Income before Financial Result and Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">1,392,473</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">1,134,078</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.06</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Result</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-259,528</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">340,124</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">3.06.01</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Revenue</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">219,119</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">199,013</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.06.01.01</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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">230,108</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">210,043</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.06.01.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Exchange Variation Gains</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-201</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,263</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.06.01.03</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Cofins and Pasep</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-10,788</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-9,767</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.06.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial&nbsp;&nbsp;Expenses</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-478,647</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">141,111</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.06.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial&nbsp;&nbsp;Expenses</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-562,471</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-453,018</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">3.06.02.02</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Exchange Variation Losses</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">83,824</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">594,129</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.07</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Profit before Taxes on Income </FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">1,132,945</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">1,474,202</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.08</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</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-385,733</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-498,663</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.08.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Current</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-383,488</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-489,505</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.08.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Deferred</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,245</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-9,158</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.09</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Result from Continued Operations</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">747,212</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">975,539</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.11</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Profit/Loss for the Period</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">747,212</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">975,539</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">3.99</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Earnings per Share - (Reais/Share)</FONT></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: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.99.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Basic Earnings per Share</FONT></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: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.99.01.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Common </FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">1.0932</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">1.42725</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">3.99.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Diluted Earnings per Share</FONT></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: 1.75pt; padding-left: 2pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">3.99.02.01</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Common </FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">1.0932</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">1.42725</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt/120% Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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 Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

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

<P STYLE="font: 4pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

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

<P STYLE="font: 3pt Arial, Helvetica, Sans-Serif; margin: 0"><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">
    <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: 48%; padding-left: 7.75pt; line-height: 10.05pt; text-align: left"><FONT STYLE="font-size: 9pt"><B>Description</B></FONT></TD>
    <TD STYLE="width: 22%">
    <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 03/31/2023</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 03/31/2022</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">4.01</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">747,212</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">975,539</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">4.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Comprehensive Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">747,212</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">975,539</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>


<!-- Field: Page; Sequence: 8 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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 Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

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

<P STYLE="font: 3pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

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

<P STYLE="font: 3pt Arial, Helvetica, Sans-Serif; margin: 0"><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">
    <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 03/31/2023</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 03/31/2022</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">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">395,306</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">616,843</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">6.01.01</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">2,513,490</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">2,161,586</FONT></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">1,132,945</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">1,474,202</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: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">70,031</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">78,415</FONT></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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-95,653</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-81,830</FONT></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">3,515</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">2,406</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">657,145</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">589,746</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">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">316,805</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">219,454</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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-13,316</FONT></TD>
    <TD STYLE="padding-top: 1.65pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-523,312</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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">6,915</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">7,604</FONT></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">-28,976</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-63,518</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">162,805</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">177,694</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">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 (PRC)</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-345</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-743</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 Results of Investments in Affiliates</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-6,334</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-5,583</FONT></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 (Public-Private Partnership)</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">123,045</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">122,150</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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">4,119</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">3,451</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">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">155,387</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">134,962</FONT></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">-26,519</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-20,685</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: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">51,921</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">47,173</FONT></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">-1,460,999</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-897,725</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">Trade Receivables</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-183,680</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-299,418</FONT></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: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">10,172</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-10,415</FONT></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">6,951</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-4,000</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">6.01.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Recoverable Taxes</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-23,531</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">12,978</FONT></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 Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-33,323</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-36,990</FONT></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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-742</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-13,378</FONT></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">-414,033</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-218,600</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">Labor and Social Obligations</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,630</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-73,155</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">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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-58,324</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-53,476</FONT></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">-225,360</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-64,184</FONT></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">-274,097</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-55,564</FONT></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">-232,389</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">4,652</FONT></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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-31,604</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-86,310</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">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">1,591</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">135</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: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-657,185</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-647,018</FONT></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: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-543,850</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-347,631</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">6.01.03.02</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: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-113,335</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-299,387</FONT></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: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-583,553</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,102,680</FONT></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 Asset and Intangible Assets</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; text-align: right"><FONT STYLE="font-size: 9pt">-570,332</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-651,660</FONT></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">-30,954</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; text-align: right"><FONT STYLE="font-size: 9pt">-8,566</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">6.02.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Restricted Cash</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-10,827</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">1,261</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">6.02.07</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; line-height: 9.35pt; text-align: left"><FONT STYLE="font-size: 9pt">Financial Investments</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.7pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">28,560</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.9pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">-443,715</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 9 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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 Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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

<P STYLE="font: 3pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

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

<P STYLE="font: 3pt Arial, Helvetica, Sans-Serif; margin: 0"><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">
    <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 03/31/2023</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 03/31/2022</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">6.03</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Net Cash from Financing Activities</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-842,788</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">259,400</FONT></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">121,611</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">1,084,506</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-top: 1.75pt; padding-left: 2pt; text-align: left"><FONT STYLE="font-size: 9pt">6.03.02</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Amortization</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-716,239</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-661,268</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">6.03.04</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-left: 7.75pt; text-align: left"><FONT STYLE="font-size: 9pt">Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-208,764</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-156,364</FONT></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">-39,396</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-7,474</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">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: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,031,035</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 1.95pt; text-align: right"><FONT STYLE="font-size: 9pt">-226,437</FONT></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">836,450</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">491,492</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>


<!-- Field: Page; Sequence: 10 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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 Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Parent Company&rsquo;s Financial Statements / Statement of Changes in
Equity / 01/01/2023 to 03/31/2023</B></P>

<P STYLE="font: 4pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

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

<P STYLE="font: 3pt 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: 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: 24%; 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: 16%; border-bottom: black 1pt solid; padding-left: 77.1pt; 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: 14.7pt; padding-left: 8.85pt; line-height: 96%; text-align: justify"><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: 11.55pt; 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 15.6pt 0 0; text-align: right"><B>Retained Earnings/Accumulated</B></P>
    <P STYLE="font: 7pt/7.95pt Arial, Helvetica, Sans-Serif; margin: 0 13.65pt 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 15.95pt 0 0; text-align: right"><B>Other Comprehensive</B></P>
    <P STYLE="font: 7pt/7.95pt Arial, Helvetica, Sans-Serif; margin: 0 13.95pt 0 0; text-align: right"><B>Income</B></P></TD>
    <TD STYLE="width: 10%; border-bottom: black 1pt solid; padding-right: 1.6pt; 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: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 14.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 11.6pt; text-align: right"><FONT STYLE="font-size: 7pt">12,155,890</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 13.65pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 13.95pt; text-align: right"><FONT STYLE="font-size: 7pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.65pt; 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: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.6pt; text-align: right"><FONT STYLE="font-size: 7pt">12,155,890</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.65pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.95pt; text-align: right"><FONT STYLE="font-size: 7pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.65pt; 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">5.05</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: 8.7pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.55pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.65pt; text-align: right"><FONT STYLE="font-size: 7pt">747,212</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.95pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.55pt; text-align: right"><FONT STYLE="font-size: 7pt">747,212</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">5.05.01</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Net Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 8.7pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 14.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 11.55pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 13.65pt; text-align: right"><FONT STYLE="font-size: 7pt">747,212</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 13.95pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 1.55pt; text-align: right"><FONT STYLE="font-size: 7pt">747,212</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: 8.75pt; 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: 14.75pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.6pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">12,155,890</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.65pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">747,212</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.95pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">177,643</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.65pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">28,080,745</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 11 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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 Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Parent Company&rsquo;s Financial Statements / Statement of Changes in
Equity / 01/01/2022 to 03/31/2022</B></P>

<P STYLE="font: 4pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

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

<P STYLE="font: 3pt 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: 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: 24%; 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: 16%; border-bottom: black 1pt solid; padding-left: 77.1pt; 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: 14.7pt; padding-left: 8.85pt; line-height: 96%; text-align: justify"><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: 11.55pt; 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 15.6pt 0 0; text-align: right"><B>Retained Earnings/Accumulated</B></P>
    <P STYLE="font: 7pt/7.95pt Arial, Helvetica, Sans-Serif; margin: 0 13.65pt 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 15.95pt 0 0; text-align: right"><B>Other Comprehensive</B></P>
    <P STYLE="font: 7pt/7.95pt Arial, Helvetica, Sans-Serif; margin: 0 13.95pt 0 0; text-align: right"><B>Income</B></P></TD>
    <TD STYLE="width: 10%; border-bottom: black 1pt solid; padding-right: 1.65pt; 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: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 14.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 11.6pt; text-align: right"><FONT STYLE="font-size: 7pt">9,885,485</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 13.65pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 13.95pt; text-align: right"><FONT STYLE="font-size: 7pt">46,374</FONT></TD>
    <TD STYLE="padding-top: 1.25pt; padding-right: 1.7pt; 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: 8.75pt; text-align: right"><FONT STYLE="font-size: 7pt">15,000,000</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.6pt; text-align: right"><FONT STYLE="font-size: 7pt">9,885,485</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.65pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.95pt; text-align: right"><FONT STYLE="font-size: 7pt">46,374</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.7pt; 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">5.05</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: 8.7pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 14.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.55pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.65pt; text-align: right"><FONT STYLE="font-size: 7pt">975,539</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.95pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.6pt; text-align: right"><FONT STYLE="font-size: 7pt">975,539</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">5.05.01</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-left: 5.95pt; text-align: left"><FONT STYLE="font-size: 7pt">Net Income for the Period</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 8.7pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 14.75pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 11.55pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 13.65pt; text-align: right"><FONT STYLE="font-size: 7pt">975,539</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 13.95pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.9pt; padding-right: 1.6pt; text-align: right"><FONT STYLE="font-size: 7pt">975,539</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: 8.75pt; 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: 14.75pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">0</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 11.6pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">9,885,485</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.65pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">975,539</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 13.95pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">46,374</FONT></TD>
    <TD STYLE="padding-top: 2.95pt; padding-right: 1.7pt; line-height: 7.05pt; text-align: right"><FONT STYLE="font-size: 7pt">25,907,398</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 12 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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 Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-indent: 26.2pt">&nbsp;</P>

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

<P STYLE="font: 3pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 3pt Arial, Helvetica, Sans-Serif; margin: 0"><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">
    <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 03/31/2023</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 03/31/2022</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">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">5,949,048</FONT></TD>
    <TD STYLE="padding-top: 1.2pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">5,020,137</FONT></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">4,909,274</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">4,298,220</FONT></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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">23,045</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">11,405</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">1,179,534</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">888,206</FONT></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">-162,805</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">-177,694</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">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">-2,502,821</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-2,109,805</FONT></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">-2,151,327</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-1,815,325</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">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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-345,776</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">-286,735</FONT></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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-5,718</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">-7,745</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">7.03</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">3,446,227</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">2,910,332</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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-657,145</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">-589,746</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">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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">-657,145</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2pt; text-align: right"><FONT STYLE="font-size: 9pt">-589,746</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">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">2,789,082</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">2,320,586</FONT></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">Wealth Received in Transfer</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">236,241</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">214,363</FONT></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 Results of Investments in Affiliates</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">6,334</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">5,583</FONT></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">229,907</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">208,780</FONT></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">3,025,323</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">2,534,949</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">3,025,323</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">2,534,949</FONT></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">663,868</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">592,898</FONT></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">Salaries and Wages</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">453,047</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">423,433</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">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">172,881</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">134,812</FONT></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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">37,940</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">34,653</FONT></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 and Contributions</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">959,120</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">980,831</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">898,314</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">922,600</FONT></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: 5.75pt; text-align: right"><FONT STYLE="font-size: 9pt">43,235</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">42,331</FONT></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">17,571</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">15,900</FONT></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">655,123</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-14,319</FONT></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">646,449</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">-20,789</FONT></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: 5.8pt; text-align: right"><FONT STYLE="font-size: 9pt">8,674</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">6,470</FONT></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">747,212</FONT></TD>
    <TD STYLE="padding-top: 1.75pt; padding-right: 2.05pt; text-align: right"><FONT STYLE="font-size: 9pt">975,539</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">747,212</FONT></TD>
    <TD STYLE="padding-top: 1.7pt; padding-right: 2.05pt; line-height: 9.35pt; text-align: right"><FONT STYLE="font-size: 9pt">975,539</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0; text-indent: 14.2pt"><B>&nbsp;</B></P>

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


<!-- Field: Page; Sequence: 13; Options: NewSection -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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="color: navy; font: 14pt/12pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><B>Highlights</B></P>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 28.35pt 0 0; text-align: justify">The Company recorded a net income
of R$ 747.2 million in 1Q23, compared to the R$ 975.6 million reported in 1Q22, a decrease of R$ 228.4 million (-23.4%).</P>

<P STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 28.35pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 28.35pt 0 0; text-align: justify">Adjusted EBITDA totaled R$ 2,035.0
million, up by R$ 313.7 million (+18.2%) over the R$ 1,721.3 million reported in 1Q22.</P>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 28.35pt 0 0; text-align: justify"><B>Revenue from sanitation services</B></P>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 28.35pt 0 0; text-align: justify">Increase of R$ 611.1 million, impacted
by (i) an average tariff adjustment of 12.8% since May 2022; (ii) a 1.4% increase in total billed volume; and (iii) a higher average tariff
due to the increase in the billed volume in the non-residential category.</P>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 28.35pt 0 0; text-align: justify"><B>Costs, administrative &amp; selling
expenses (excluding construction costs)</B></P>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 28.35pt 0 0; text-align: justify">Growth of R$ 296.9 million, mainly
due to the (i) R$ 112.8 million increase in services; (ii) R$ 76.1 million increase in salaries, payroll charges, benefits, and pension
plan obligations; (iii) R$ 67.4 million increase in depreciation and amortization; and (iv) R$ 35.7 million increase with general expenses.</P>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 28.35pt 0 0; text-align: justify"><B>Impacts from the exchange variation</B></P>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 28.35pt 0 0; text-align: justify">Exchange variation income on borrowings
and financing fell by R$ 510.4 million, due to the lower appreciation of the Brazilian real against the U.S. dollar and the Japanese yen
in 1Q23, compared to the appreciation of 1Q22, as shown in the table below:</P>

<P STYLE="font: 9.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 28.35pt 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: 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: 12pt Times New Roman, Times, Serif; background-color: #95B3D7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1Q23</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: 12pt Times New Roman, Times, Serif; background-color: #95B3D7; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1Q22</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">2,634.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">2,603.7</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: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">14.0%</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">15.0%</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: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">(2.6%)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">(15.1%)</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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">(3.3%)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">(19.5%)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 8pt/12pt Trebuchet MS, Times, Serif; margin: 0 0 0 3.8pt; text-align: justify"><I>&nbsp;</I></P>

<P STYLE="color: navy; font: 14pt/12pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="color: navy; font: 14pt/12pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="color: navy; font: 14pt/12pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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: 10.5pt/12pt Trebuchet MS, 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: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>1.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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="5" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Var.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; width: 58%; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 11%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 11%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 10%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 10%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4,909.3 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4,298.2 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;611.1 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.2 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1,179.5 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;888.2 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;291.3 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32.8 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(390.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(316.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(74.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23.5 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5,698.4 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4,870.4 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;828.0 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17.0 </B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3,173.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2,876.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(296.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.3 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1,153.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(867.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(285.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32.9 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.3 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.6 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.7 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.5 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.6 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.6 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.0 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;461.5 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1,392.5 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1,134.2 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;258.3 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22.8 </B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(259.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;340.1 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(599.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(176.3)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1,133.0 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1,474.3 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(341.3)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(23.1)</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(385.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(498.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;112.9 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(22.6)</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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>(=) Net income</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;747.2 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;975.6 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(228.4)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(23.4)</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.09 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.43 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0; color: red"><B><I>&nbsp;</I></B></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0 0.7in 0 0"><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: 12pt Times New Roman, Times, Serif; margin: 0; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; 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="5" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Var.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; width: 58%; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 11%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 11%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 10%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 10%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;747.2 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;975.6 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(228.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(23.4)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;385.8 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;498.7 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(112.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(22.6)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;259.5 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(340.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;599.6 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(176.3)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(14.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(12.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;461.5 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>(=) Adjusted EBIT*</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1,377.9 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1,131.6 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;246.3 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21.8 </B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;657.1 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;589.7 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67.4 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.4 </FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>(=) Adjusted EBITDA**</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2,035.0 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1,721.3 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;313.7 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18.2 </B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(%) Adjusted EBITDA margin</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt; color: black">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35.7 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt; color: black">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35.3 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</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 EBIT corresponds to income before: (i) other operating income (expenses), net; (ii) financial
result; and (iii) income tax and social contribution.</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.</FONT></I></P>

<P STYLE="color: red; font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 0; text-align: justify">The net operating revenue, which
considers construction revenue, totaled R$ 5,698.4 million in 1Q23, up by 17.0% over 1Q22.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 0; text-align: justify">Costs and expenses, which consider
construction costs, totaled R$ 4,326.8 million, up by 15.6% over 1Q22.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 0; text-align: justify">Adjusted EBIT, of R$ 1,377.9 million,
increased by 21.8% over the R$ 1,131.6 million recorded in 1Q22.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 0; text-align: justify">Adjusted EBITDA, of R$ 2,035.0 million,
increased by 18.2% over the R$ 1,721.3 million recorded in 2022 (R$ 7,401.4 million in the last 12 months).</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 0; text-align: justify">The Adjusted EBITDA margin was 35.7%
in 1Q23, compared to 35.3% in 1Q22 (32.3% in the last 12 months).</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 0; text-align: justify">Excluding the effects of revenue
and construction costs, the adjusted EBITDA margin reached 44.5% in 1Q23, compared to 42.7% in 1Q22 (41.1% in the last 12 months).</P>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 0; text-align: justify">The Company recorded a net income
of R$ 747.2 million in 1Q23, compared to R$ 975.6 million in 1Q22.</P>

<P STYLE="font: 10.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 49.6pt 6pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, 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: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>2.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: navy"><B>Revenue from
sanitation services</B></FONT></TD></TR></TABLE>

<P STYLE="color: navy; font: 10pt/12pt 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 0; text-align: justify">The gross operating revenue from sanitation
services, which excludes construction revenue, totaled R$ 4,909.3 million in 1Q23, an increase of R$ 611.1 million (+14.2%) over the R$
4,298.2 million recorded in 1Q22.</P>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 21.25pt 6pt 0; text-align: justify">The main factors that led to the
increase were:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.1pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">Average
tariff adjustment of 12.8% since May 2022; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.1pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">Increase
of 1.4% in the total billed volume.</FONT></TD></TR></TABLE>

<P STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 7.1pt 6pt 0; text-align: justify">&nbsp;</P>

<P STYLE="color: red; font: 10.5pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 21.25pt 0 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, 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: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>3.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: navy"><B>Construction
revenue</B></FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: justify">Construction revenue increased by R$
291.3 million (+32.8%), due to higher investments made.</P>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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: 14pt Times New Roman, Times, Serif; margin: 0; color: red"><B>&nbsp;</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, 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: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>4.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: navy"><B>Billed volume</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10.5pt/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 0; text-align: justify">The following tables show the water
and sewage billed volumes, on a quarter-over-quarter basis, per customer category and region.</P>

<P STYLE="font: 10.5pt/12pt Trebuchet MS, Times, 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: #8EA9DB">
    <TD COLSPAN="10" STYLE="border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">WATER AND SEWAGE BILLED VOLUME <SUP>1</SUP> PER CUSTOMER CATEGORY &ndash; million m<SUP>3</SUP></FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Water</B></FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Sewage</B></FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Water + Sewage</B></FONT></TD></TR>
  <TR STYLE="background-color: #D9E1F2">
    <TD STYLE="vertical-align: top; width: 24%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Category</B></FONT></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Var. %</B></FONT></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Var. %</B></FONT></TD>
    <TD STYLE="width: 10%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="width: 10%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="width: 8%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Var. %</B></FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Residential</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">472.2</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">472.6</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(0.1)</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">412.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">409.5</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">0.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">885.0</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">882.1</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">0.3</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Commercial</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">46.7</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">41.4</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">12.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">43.9</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">40.3</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">8.9</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">90.6</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">81.7</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">10.9</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Industrial</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">8.6</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">8.1</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">6.2</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">9.3</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">9.1</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">2.2</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">17.9</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">17.2</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">4.1</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Public</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">10.0</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">9.5</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">4.9</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">9.2</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">8.5</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">8.1</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">19.1</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">18.0</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">6.4</FONT></TD></TR>
  <TR STYLE="background-color: #F2F2F2">
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Total retail</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>537.5</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>531.6</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.1</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>475.2</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>467.4</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.7</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1,012.6</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>999.0</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.4</B></FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Wholesale<SUP>3</SUP></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">12.2</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">11.9</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">2.5</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">5.6</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">5.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(3.4)</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">17.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">17.7</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">0.6</FONT></TD></TR>
  <TR STYLE="background-color: #F2F2F2">
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Overall Total</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>549.7</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>543.5</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.1</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>480.8</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>473.2</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.6</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1,030.4</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1,016.7</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.4</B></FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Water</B></FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Sewage</B></FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Water + Sewage</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top; background-color: #8EA9DB">
    <TD COLSPAN="10" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">WATER AND SEWAGE BILLED VOLUME <SUP>1</SUP> PER REGION - million m3</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Water</B></FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Sewage</B></FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Water + Sewage</B></FONT></TD></TR>
  <TR STYLE="background-color: #D9E1F2">
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Region</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Var. %</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Var. %</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Var. %</B></FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Metropolitan</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">358.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">354.3</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">1.3</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">316.5</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">311.0</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">1.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">675.2</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">665.3</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">1.5</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Regional<SUP>2</SUP></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">178.7</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">177.3</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">0.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">158.7</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">156.4</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">1.5</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">337.4</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">333.7</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">1.1</FONT></TD></TR>
  <TR STYLE="background-color: #F2F2F2">
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Total retail</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>537.5</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>531.6</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.1</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>475.2</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>467.4</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.7</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1,012.6</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>999.0</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.4</B></FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Wholesale<SUP>3</SUP></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">12.2</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">11.9</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">2.5</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">5.6</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">5.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(3.4)</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">17.8</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">17.7</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">0.6</FONT></TD></TR>
  <TR STYLE="background-color: #F2F2F2">
    <TD STYLE="vertical-align: top; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Overall Total</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>549.7</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>543.5</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.1</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>480.8</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>473.2</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.6</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1,030.4</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1,016.7</B></FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1.4</B></FONT></TD></TR>
  </TABLE>
<P STYLE="color: red; font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 7.1pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="color: red; font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 7.1pt 0 0; text-align: justify">&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
Including coastal and interior regions</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>3
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>

<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>

<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>

<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>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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: 10.5pt/12pt Trebuchet MS, 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: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>5.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: navy"><B>Costs, administrative
&amp; selling expenses, and construction costs</B></FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 0 0; text-align: justify">Costs, administrative and selling
expenses, and construction costs increased by R$ 582.4 million in 1Q23 (+15.6%). Excluding construction costs, the increase was R$ 296.9
million (+10.3%).</P>

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">Costs, administrative and selling
expenses, and construction costs as a percentage of net revenue were 75.9% in 1Q23 compared to 76.9% in 1Q22.</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="5" STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Var.</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom; background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; width: 59%; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 12%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 12%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 9%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">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; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">744.2</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">668.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">76.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">11.4</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">General supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">87.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">71.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">15.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">21.7</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Treatment supplies</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">164.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">147.3</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">17.6</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">11.9</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Services</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">624.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">512.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">112.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">22.0</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Electricity</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">395.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">412.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(16.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(3.9)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">General expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">314.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">279.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">35.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">12.8</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Tax expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">21.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">19.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">2.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">14.7</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">657.1</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">589.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">67.4</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">11.4</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Allowance for doubtful accounts</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">162.8</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">177.7</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(14.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(8.4)</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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Costs, administrative &amp; selling expenses</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>3,173.8</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>2,876.9</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>296.9</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>10.3</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Construction costs</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">1,153.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">867.5</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">285.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">32.9</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Costs, adm &amp; selling expenses, and construction costs</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>4,326.8</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>3,744.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>582.4</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">% of net revenue</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">75.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">76.9</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: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: navy"><B>Salaries, payroll charges and benefits,
and Pension plan obligations</B></P>

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

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">The R$ 76.1 million increase (+11.4%)
recorded in 1Q23 was mainly due to:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">The
average salary adjustment of 12.9% (R$ 54.1 million) in May 2022 and the application of 1% referring to the Career and Salary Plan in
February 2023, partially offset by the 1.8% decline in the average number of employees; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">R$
16.4 million in health care expenses.</FONT></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: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: navy"><B>General supplies</B></P>

<P STYLE="font: 10pt 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 0; text-align: justify">Increase of R$ 15.6 million (+21.7%),
mostly with the maintenance of water and sewage systems, networks, and connections, totaling R$ 16.1 million.</P>

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

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

<P STYLE="font: 10pt 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 6pt 0; text-align: justify">Increase of R$ 17.6 million (+11.9%),
due to (i) the increase in product prices, some of which were impacted by the international market, such as aluminum polychloride; and
(ii) the higher use of algaecides, coagulants, and disinfectants in several water treatment stations to maintain the quality of raw water.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

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

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

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">Service expenses totaled R$ 624.9
million, an increase of R$ 112.8 million (+22.0%) over the R$ 512.1 million recorded in 1Q22. The main increases were:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">R$
38.2 million paid to technical services, mainly IT consulting, maintenance, and support;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">R$
19.9 million for the maintenance of water and sewage networks, connections, and systems;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">R$
18.5 million with meter reading and bill delivery;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">R$
10.4 million with paving and replacing of sidewalks;</FONT></TD></TR></TABLE>

<P STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 14.15pt 6pt 0; text-align: justify; text-indent: -14.15pt"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 7pt; color: windowtext">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">R$ 9.1 million with advertising; and</FONT></P>

<P STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 14.15pt 6pt 0; text-align: justify; text-indent: -14.15pt"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 7pt; color: windowtext">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">R$ 8.6 million with surveillance.</FONT></P>

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

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

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

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">Electricity expenses totaled R$ 395.8
million in 1Q23, a decrease of R$ 16.2 million (-3.9%) from the R$ 412.0 million recorded in 1Q22. Of the total, the Free Market Tariffs
(ACL) accounted for 55.1% of total expenses in 1Q23 (52.0% in 1Q22) while the Regulated Market Tariffs (ACR) accounted for 44.9% (48.0%
in 1Q22).</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">The main factors that contributed to
this variation were:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">An
average decrease of 2.2% in ACL prices (including Grid Market Tariffs - TUSD), with a 4.8% increase in consumption; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">An
average decrease of 14.0% in ACR tariffs, with a decrease of 2.1% in consumption.</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">Electricity tariffs were impacted,
among others, by (i) the tariff flag from water shortage in 1Q22; and (ii) the lower tax burden on electricity bills since June 2022,
as a consequence of Supplementary Law 194/2022.</P>

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

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

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

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">Increase of R$ 35.7 million (+12.8%),
totaling R$ 314.8 million in 1Q23, compared to the R$ 279.1 million recorded in 1Q22, mainly from the higher provision for transfer to
the Municipal Funds for Environmental Sanitation and Infrastructure, of R$ 23.5 million.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">Expenses with municipal transfers totaled
R$ 186.5 million in 1Q23, compared to the R$ 163.0 million reported in 1Q22 (+14.4%), mainly due to higher operating revenue.</P>

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

<P STYLE="color: navy; font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 0 0; text-align: justify"><B>Depreciation and amortization</B></P>

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

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">The R$ 67.4 million increase (+11.4%)
was mainly due to the beginning of operations of intangible assets, totaling R$ 5.3 billion.</P>

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

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify; color: navy"><B>Allowance for doubtful accounts</B></P>

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

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">Decrease of R$ 14.9 million, from R$
177.7 million in 1Q22 to R$ 162.8 million in 1Q23, due to the higher number of overdue bills received in 1Q23.</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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: 12pt Times New Roman, Times, Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, 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: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>6.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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: 12%; 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">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Financial expenses, net of revenue</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(257.2)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(171.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(85.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">49.6</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Monetary and exchange variations, net</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(2.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">512.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(514.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(100.4)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Financial Result</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(259.5)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>340.1</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(599.6)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(176.3)</B></FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; 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: 10%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; 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; font: 12pt Times New Roman, Times, Serif; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Financial expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">&nbsp;&nbsp;&nbsp;Interest and charges on domestic borrowings and financing</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(273.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(189.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(83.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">44.0</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">&nbsp;&nbsp;&nbsp;Interest and charges on international borrowings and financing</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(21.0)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(8.6)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(12.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">144.2</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">&nbsp;&nbsp;&nbsp;Other financial expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(122.1)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(114.3)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(7.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">6.8</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>Total financial expenses</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(416.2)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(312.5)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(103.7)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>33.2</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Financial revenue</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">159.0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">140.6</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">18.4</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">13.1</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(257.2)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(171.9)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(85.3)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>49.6</B></FONT></TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, 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; 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: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">Increase
of R$ 83.5 million in interest and charges on domestic borrowings and financing, mainly due to (i) higher interest on debentures, of R$
49.5 million, including the effect from the amortization of the 17th and 21st issues, as well as the proceeds of the 30th issue, totaling
R$ 32.2 million in financial expenses; and (ii) a rise in the average DI rate (from 10.27% in 1Q22 to 13.65% in 1Q23), which impacted
interest on domestic borrowings;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">Increase
of R$ 12.4 million in interest and charges on international borrowings and financing, mainly the lower appreciation of the Brazilian real
against the U.S. dollar and the Yen in 1Q23 (2.63% and 3.29%, respectively), compared to the appreciation observed in 1Q22 (15.10% and
19.50%, respectively);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">Increase
of R$ 18.4 million in financial revenues, mainly on financial investments in 1Q23, as a result of the higher average DI rate.</FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; 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: 64%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; 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: 8%; 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; font: 12pt Times New Roman, Times, Serif; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>R$</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>%</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Monetary and exchange variations on liabilities</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; background-color: white; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">&nbsp;&nbsp;&nbsp;Monetary variations on borrowings and financing </FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(70.5)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(70.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">0.2</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(0.3)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">&nbsp;&nbsp;&nbsp;Exchange variations on borrowings and financing</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">83.8</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">594.2</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(510.4)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(85.9)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">&nbsp;&nbsp;&nbsp;Other monetary variations</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(75.7)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(69.9)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">(5.8)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">8.3</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(62.4)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>453.6</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(516.0)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(113.8)</B></FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Monetary and exchange variations on assets</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">60.1</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">58.4</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">1.7</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">2.9</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(2.3)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>512.0</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(514.3)</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>(100.4)</B></FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 20 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">The effect on the net monetary and exchange
variations in 1Q23 was R$ 514.3 million, featuring the negative variation of R$ 510.4 million in exchange variations on borrowings and
financing, due to the lower appreciation of the Brazilian real against the U.S. dollar and the Yen in 1Q23 (2.63% and 3.29%, respectively),
compared to the appreciation observed in 1Q22 (15.10% and 19.50%, respectively).</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, 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: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>7.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: navy"><B>Income tax and
social contribution</B></FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">The R$ 112.9 million decrease in 1Q23 was mainly due
to:</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">Higher
costs and expenses, of R$ 582.4 million; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Symbol; font-size: 10pt; color: windowtext">&#183;</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.15pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt; color: black">Lower
gains with exchange variation, of R$ 510.4 million.</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">The factors above were mitigated
by higher net operating revenue, of R$ 828.0 million.</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: 10.5pt/12pt Trebuchet MS, 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: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: #000099"><B>8.</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 14pt; color: navy"><B>Indicators</B></FONT></TD></TR></TABLE>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; color: navy"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt"><B>a)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt"><B>Operating</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black"><B>1Q23</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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black"><B>1Q22</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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Water Connections<SUP>1</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">10,206</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">9,872</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">3.4</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Sewage connections<SUP>1</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">8,684</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">8,451</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">2.8</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Population directly served - water<SUP>2</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">28.1</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">27.8</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">1.1</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Population directly served - sewage<SUP>2</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">24.8</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">24.6</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Number of employees</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">12,211</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">12,435</FONT></TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">-1.8</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: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">Volume of water produced<SUP>3</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">733.0</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">714.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">2.6</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: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">IPM - Measured Water Loss (%)<SUP>4</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">29.5</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">27.9</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">5.7</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: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">IPDt (liters/connection x day)<SUP>4</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">255</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">248</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt; color: black">2.8</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 7.1pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 99.2pt 0 14.2pt; text-indent: -14.2pt">1. Total connections, active and inactive,
in thousand units at the end of the period.</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 99.2pt; margin-bottom: 0">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 7.1pt; text-indent: -7.1pt">3. Millions of m<SUP>3</SUP><SUB>.</SUB>
Excludes volumes produced in the municipalities of Agua&iacute;, Tapiratiba, and Tejup&aacute; in 1Q22.</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 99.2pt 0 7.1pt; text-indent: -7.1pt">4. Excludes volumes and connections in
Mau&aacute;, Agua&iacute;, and Tapiratiba in 1Q22.</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; text-align: left; margin-top: 0; margin-right: 99.2pt; margin-bottom: 0"><SUP>*</SUP> Unaudited by external auditors</P>

<P STYLE="font: 9pt Times New Roman, Times, 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: 12pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0; color: navy"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt"><B>b)</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt"><B>Economic</B></FONT></TD></TR></TABLE>

<P STYLE="font: 12pt 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Economic variables at the close of the quarter *</FONT></TD>
    <TD STYLE="white-space: nowrap; width: 14%; border-top: Black 1pt solid; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q23</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 14%; border-top: Black 1pt solid; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt"><B>1Q22</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">2.09</FONT></TD>
    <TD STYLE="white-space: nowrap; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">3.20</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">National Consumer Price Index <SUP>(1)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">1.88</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">3.42</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Consumer Price Index <SUP>(1)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">1.46</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">2.95</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">DI <SUP>(2)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">13.65</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">10.27</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">U.S. dollar <SUP>(3)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">5.0804</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">4.7378</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">Yen <SUP>(3)</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">0.03827</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 9pt">0.03902</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: center; color: red"><B>&nbsp;</B></P>

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

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

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0; 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 6pt; text-indent: -7.1pt"><SUP>*</SUP> Unaudited by external auditors</P>

<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 0 6pt; text-indent: -7.1pt">&nbsp;</P>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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: 12pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-indent: -7.1pt">&nbsp;</P>

<P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0 0 6pt; text-indent: -7.1pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt 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: 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>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0 2.55pt 0 0; text-align: right"><B><I>R$ thousand</I></B></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: 33%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>DEBT PROFILE</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 7%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 8%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 5%; padding-right: 3.5pt; padding-left: 3.5pt; font: 12pt Times New Roman, Times, Serif; text-align: center">&nbsp;</TD></TR>
  <TR STYLE="background-color: #8DB4E2">
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2023</B></FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2024</B></FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2025</B></FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2026</B></FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2027</B></FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2028</B></FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2029 onwards</B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>TOTAL</B></FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>% of total</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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="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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Debentures</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">377,852</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,077,166</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,207,210</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,085,512</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,720,562</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">651,547</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,527,548</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">7,647,397</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">42</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Brazilian Federal Savings Bank</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">74,079</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">101,891</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">108,253</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">115,014</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">122,187</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">129,675</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">901,743</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,552,842</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">9</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">BNDES</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">179,344</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">234,620</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">214,281</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">204,396</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">191,790</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">72,559</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">221,836</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,318,826</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">7</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">IDB 2202</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">90,674</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">181,349</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">181,349</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">181,349</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">181,349</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">181,349</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,257,504</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">2,254,923</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">12</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">IDB INVEST</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">32,770</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">53,650</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">82,575</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">144,821</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">147,159</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">182,022</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">695,813</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,338,810</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">7</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">IFC</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">80,000</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">80,000</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">80,000</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">80,000</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">80,000</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">80,000</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">271,224</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">751,224</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">4</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Lease (Concession Agreements, Program Contracts, and Contract Asset) <SUP>1</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">55,373</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">16,401</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">9,518</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">4,061</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">476</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">85,829</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Leases (others) <SUP>2</SUP></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">44,849</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">47,149</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">36,931</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">30,224</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">33,411</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">154,407</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">346,971</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">2</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Other</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">8,296</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">2,986</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">2,753</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">141</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">14,176</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Interest and other charges</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">348,622</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">2,301</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">350,923</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">2</FONT></TD></TR>
  <TR STYLE="background-color: #C5D9F1">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B><I>Total in local currency</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1,247,010</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1,795,213</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1,933,088</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1,852,225</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2,473,747</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1,330,563</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>5,030,075</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>15,661,921</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>86</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="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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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="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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">IDB</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">26,108</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">52,217</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">63,444</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">22,455</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">22,455</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">22,455</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">328,061</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">537,195</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">3</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">IBRD</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">15,444</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">30,887</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">30,887</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">30,887</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">30,887</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">30,887</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">218,304</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">388,183</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">2</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">JICA</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">87,629</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">164,209</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">164,209</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">164,209</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">164,209</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">164,209</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">748,430</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">1,657,104</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">9</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">IDB 1983AB</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">39,010</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">39,010</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Interest and other charges</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">12,510</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">12,510</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">0</FONT></TD></TR>
  <TR STYLE="background-color: #C5D9F1">
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B><I>Total in foreign currency</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>180,701</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>247,313</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>258,540</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>217,551</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>217,551</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>217,551</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1,294,795</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2,634,002</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>14</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="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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: justify"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B><I>TOTAL</I></B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1,427,711</B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2,042,526</B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2,191,628</B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2,069,776</B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>2,691,298</B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1,548,114</B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>6,324,870</B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>18,295,923</B></FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify; color: navy"><B>&nbsp;</B></P>

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

<P STYLE="font: 10pt 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 0; text-align: justify">The table below shows the most restrictive
clauses in 1Q23:</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: 76%; border-top: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 24%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Covenants</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Adjusted EBITDA / Adjusted Financial Expenses</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Equal to or higher than 2.80</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">EBITDA / Financial Expenses Paid</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Equal to or higher than 2.35</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Adjusted Net Debt / Adjusted EBITDA</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Equal to or lower than 3.80</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Net Debt / Adjusted EBITDA</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Equal to or lower than 3.50</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Total Adjusted Debt / Adjusted EBITDA</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Lower than 3.65</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Other Onerous Debt <SUP>1</SUP> / Adjusted EBITDA</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; 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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Adjusted Current Ratio</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Higher than 1.00</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 7pt Arial, Helvetica, Sans-Serif; margin: 0 106.3pt 6pt 0">1 &ldquo;Other Onerous Debt&rdquo; corresponds 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: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">In 1Q23, the Company met the requirements
of its borrowings and financing agreements.</P>

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


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Comments on the Company&rsquo;s Performance</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: 12pt Times New Roman, Times, Serif; margin: 0 14.15pt 6pt 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt 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: 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: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">Investments totaled R$ 1,236.1 million
in 1Q23, presented as additions in the notes to the quarterly information under Contract Asset, Intangible Assets, and Property, Plant
and Equipment, of R$ 1,204.8 million, R$ 0.4 million, and R$ 30.9 million, respectively. Cash disbursed in 1Q23 referring to investments,
including from previous periods, totaled R$ 601.3 million.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 14.15pt 6pt 0; text-align: justify">The table below shows investments broken
down by water, sewage, and region:</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; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B><I>R$ million</I></B></FONT></TD></TR>
  <TR STYLE="background-color: #95B3D7">
    <TD STYLE="white-space: nowrap; width: 55%; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-bottom: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Investments per Region</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 17%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Water</B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 15%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Sewage </B></FONT></TD>
    <TD STYLE="white-space: nowrap; width: 13%; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; border-right: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt; text-align: center"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Total</B></FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Metropolitan Region</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">315.8 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">568.4 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">884.2 </FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">Regional Systems (coastal and interior regions)</FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">188.0 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">163.9 </FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt">351.9 </FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Total</B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>503.8 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>732.3 </B></FONT></TD>
    <TD STYLE="white-space: nowrap; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 3.5pt; padding-left: 3.5pt; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>1,236.1 </B></FONT></TD></TR>
  </TABLE>
<P STYLE="color: red; font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 7.1pt 6pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 7.1pt 6pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10.5pt/12pt Trebuchet MS, Times, Serif; margin: 0 7.1pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 23; Options: NewSection -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/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>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 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 March 31, 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; font: 12pt/110% Times New Roman, Times, Serif">&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>March 31,</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>March 31,</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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total municipalities that have already signed contracts</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">351</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">351</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">342</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45,931,674</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45,292,307</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">42,639,277</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">94.79%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">94.49%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">93.83%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.65pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">4,678,421</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">17,767,561</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">4,084,343</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.65pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">95.30%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">95.37%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">95.02%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Municipalities with expired contracts:</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">8</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11,443</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11,519</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">211,225</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 7.1pt; 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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.02%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.02%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.46%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.65pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3,822</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">15,236</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">11,316</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.65pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.08%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.08%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.26%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Municipalities with concession agreements due by 2030:</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">23</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">23</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">25</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,064,090</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,072,138</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,110,000</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2.20%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2.24%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2.44%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.65pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Revenue from sanitation services (excluding construction revenue)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">189,704</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">711,452</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">170,205</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.65pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3.86%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3.82%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">3.96%</FONT></TD></TR>

<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 52%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt/110% Times New Roman, Times, Serif"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Municipality of S&atilde;o Paulo:</FONT></TD>
    <TD STYLE="width: 16%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt/110% Times New Roman, Times, Serif; text-align: right">&nbsp;</TD>
    <TD STYLE="width: 16%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt/110% Times New Roman, Times, Serif; text-align: right">&nbsp;</TD>
    <TD STYLE="width: 16%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt/110% Times New Roman, Times, Serif; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 8.65pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Percentage of intangible and contract assets</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">43.21%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">43.33%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">43.15%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 8.65pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">44.53%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45.14%</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">44.12%</FONT></TD></TR>
  </TABLE>
<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<!-- Field: Page; Sequence: 24 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;&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; 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 gradual
recovery of the economic activities, 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 May 11, 2023.</P>

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


<!-- Field: Page; Sequence: 25 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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>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 March 31, 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 March 31, 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 according to 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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: 12pt/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: 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>


<!-- Field: Page; Sequence: 26 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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 March 31, 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.</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>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/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
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>


<!-- Field: Page; Sequence: 27 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, 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$ 2,668,775 as
of March 31, 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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="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>March 31, 2023</B></P></TD>
    <TD COLSPAN="2" STYLE="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>December 31,
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 48%; padding-bottom: 1pt; font: 12pt/110% Times New Roman, Times, Serif; text-align: justify">&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="white-space: nowrap; width: 11%">
    <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="white-space: nowrap; width: 11%">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>R$</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Borrowings and financing &ndash; US$</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">196,159</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">996,566</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">191,022</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">43,368,135</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,659,699</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">45,369,189</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">9,142</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,368</P></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap">
    <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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total exposure</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,668,775</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Borrowing cost &ndash; US$</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(32,178)</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Borrowing cost &ndash; Yen</FONT></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(2,595)</P></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap">
    <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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">2,634,002</P></TD>
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 5.65pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap">
    <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 5.1% decrease in the balance of the foreign currency-denominated
debt from March 31, 2023, compared to December 31, 2022, was mainly impacted by the depreciation of the US dollar and 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; font: 12pt/110% Times New Roman, Times, Serif; 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>March 31, 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>Variation</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">US$</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">R$ 5.0804</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">R$ 5.2177</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-2.6%</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Yen</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">R$ 0.03827</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">R$ 0.03957</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-3.3%</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$&nbsp;83,825 from
January to March 2023 (a decrease of R$&nbsp;692,434 from January to March 2022), due to exchange rare changes. See Note 16 (ii). As of
March 31, 2023, if the Brazilian real had depreciated or appreciated by 10 percentage points, in addition to the impacts already mentioned
above, against the U.S. dollar and Yen with all other variables held constant, the effects on the result before taxes on the three-month
period ended March 31, 2023, would have been R$ 266,878 (R$ 263,032 for the three-month period ended March 31, 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>


<!-- Field: Page; Sequence: 28 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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: 79%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt/110% Times New Roman, Times, Serif">&nbsp;</TD>
    <TD STYLE="width: 21%; 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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(*)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Net currency exposure as of March 31, 2023 in US$ - Liabilities </B></FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">196,159</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">US$ rate as of March 31, 2023</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">5.0804</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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">5.2500</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Difference between the rates</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(0.1696)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(33,269)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%"><B>Net currency exposure as of March 31, 2023 in Yen - Liabilities</B></FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">43,368,135</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Yen rate as of March 31, 2023</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">0.03827</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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">0.04047</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Difference between the rates</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(0.0022)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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">(95,410)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><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">(128,679)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">&nbsp;</TD></TR>
  <TR>
    <TD COLSPAN="2" STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: justify"><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 March 31, 2024, were used, according to the Focus-BACEN and B3&rsquo;s Benchmark Rate report, of March 31, 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>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, 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 variable interest rates:</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: 34%; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; font: 12pt/110% Times New Roman, Times, Serif; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 34%">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 30%">
    <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: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">CDI (i)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">8,941,806</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">TR (ii)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,655,154</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">IPCA (iii)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">2,994,354</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">TJLP (iv)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,368,508</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">SOFR (v)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">996,567</FONT></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: right"><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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Interest and charges</FONT></TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">360,055</P></TD>
    <TD>&nbsp;</TD>
    <TD>
    <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; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.65pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total </FONT></TD>
    <TD STYLE="white-space: nowrap">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">16,316,444</P></TD>
    <TD>&nbsp;</TD>
    <TD>
    <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>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 9pt/110% Georgia, Times, Serif; margin-top: 0pt; margin-bottom: 6pt; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 15pt; text-align: right">(i)</TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify">CDI - (<I>Certificado de Dep&oacute;sito Interbanc&aacute;rio</I>), an interbank deposit
certificate</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 9pt/110% Georgia, Times, Serif; margin-top: 0pt; margin-bottom: 6pt; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 15pt; text-align: right">(ii)</TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify">TR &ndash; Interest Benchmark Rate</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 9pt/110% Georgia, Times, Serif; margin-top: 0pt; margin-bottom: 6pt; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 15pt; text-align: right">(iii)</TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify">IPCA - (<I>&Iacute;ndice Nacional de Pre&ccedil;os ao Consumidor Amplo</I>), a consumer price
index</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 9pt/110% Georgia, Times, Serif; margin-top: 0pt; margin-bottom: 6pt; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 15pt; text-align: right">(iv)</TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify">TJLP - (<I>Taxa de Juros a Longo Prazo</I>), a long-term interest rate index</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 9pt/110% Georgia, Times, Serif; margin-top: 0pt; margin-bottom: 6pt; width: 100%"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 15pt; text-align: right">(v)</TD><TD STYLE="width: 5pt"></TD><TD STYLE="text-align: justify">SOFR - <I>Secured Overnight Financing Rate</I></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">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 March 31, 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 three-month period ended March 31, 2022 would have been R$ 163,164 (R$ 153,698 for the three-month period ended March 31, 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 March 31, 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 balance sheet date. See Notes 6, 7, 8, 9, and 10.</P>


<!-- Field: Page; Sequence: 30 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&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>

<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: 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AA(bra)</FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AA(bra)</FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Banco BV</FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">AA(bra)</FONT></TD>
    <TD STYLE="font: 12pt Times New Roman, Times, Serif; 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="font: 12pt Times New Roman, Times, Serif; 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="width: 46%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt/110% Times New Roman, Times, Serif">&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>March 31, 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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Cash and cash equivalents and financial investments</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">AA(bra)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,156,298</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">AAA(bra)</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">1,017,191</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt"><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">312,274</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="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt">&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">2,485,763</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">(*) As of March 31, 2023, this category includes R$ 297,858
(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>

<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 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 March 31, 2023.</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>


<!-- Field: Page; Sequence: 31 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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: 37%; padding-bottom: 1pt; font: 12pt/110% Times New Roman, Times, Serif; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 9%; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>April to December
    2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 9%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 9%; padding-left: 2.85pt">
    <P STYLE="font: bold 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid">2025</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 9%; padding-left: 2.85pt">
    <P STYLE="font: bold 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid">2026</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 9%; padding-left: 2.85pt">
    <P STYLE="font: bold 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid">2027</P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 9%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 9%; padding-left: 2.85pt">
    <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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%"><B>As of March 31, 2023</B></FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: bold 10pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: bold 10pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: bold 10pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: bold 10pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Liabilities</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: bold 10pt/110% Times New Roman, Times, Serif; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Borrowings and financing</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">2,470,033</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">3,756,930</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">3,808,172</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">3,528,549</FONT></TD>
    <TD STYLE="font: bold 10pt/110% Times New Roman, Times, Serif; 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: 8pt; font-weight: normal; line-height: 110%">3,853,172</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">13,740,507</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">31,157,363</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Trade payables and contractors</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">257,746</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: bold 10pt/110% Times New Roman, Times, Serif; 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: 8pt; font-weight: normal; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">257,746</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Services payable</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">604,532</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: bold 10pt/110% Times New Roman, Times, Serif; 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: 8pt; font-weight: normal; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">604,532</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Public-Private Partnership - PPP</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">377,136</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">459,463</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">419,969</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">419,969</FONT></TD>
    <TD STYLE="font: bold 10pt/110% Times New Roman, Times, Serif; 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: 8pt; font-weight: normal; line-height: 110%">419,969</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; font: 12pt/110% Times New Roman, Times, Serif; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">3,617,986</FONT></TD>
    <TD STYLE="font: 12pt/110% Times New Roman, Times, Serif; 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: 8pt; line-height: 110%">5,714,492</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Program Contract Commitments</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">61,996</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,192</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,192</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,192</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; border-bottom: Black 0.5pt solid; text-align: right"><FONT STYLE="font-weight: normal">1,192</FONT></P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">12,529</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">79,293</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 12pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">Total</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,771,443</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,217,585</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,229,333</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,949,710</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; border-bottom: Black 1.5pt double; text-align: right"><FONT STYLE="font-weight: normal">4,274,333</FONT></P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">17,371,022</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">37,813,426</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 March 31, 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: 32 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, 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>March 31, 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%">1,735,296</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%">12.8900%(**)</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%">223,680</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%">(8,941,806)</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%">12.8900%(**)</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%">(1,152,599)</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%">(7,206,510)</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%">(928,919)</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%">1,655,154</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%">0.0174%(**)</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%">(288)</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%">(2,994,354)</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%">5.9559%(*)</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%">(178,341)</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%">(1,368,508)</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%">(90,048)</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%">(996,567)</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%">0.0435%(**)</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%">(434)</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: 8pt; 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">(1,198,030)</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 of March 31, 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 of March 31, 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: 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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 its ability to increase 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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 48%; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 26%; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 26%; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"><B>&nbsp;</B></FONT></TD>
    <TD STYLE="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-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">18,295,923</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(836,450)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">(1,649,313)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 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></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-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">15,810,160</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">28,080,745</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 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></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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 0.5pt solid">43,890,905</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 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></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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">36%</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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>

<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>4.3</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 will be 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>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&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: 12pt Times New Roman, Times, 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">836,450</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">836,450</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">1,867,485</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">1,867,485</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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,649,313</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">1,649,313</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">1,677,873</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">1,677,873</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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">48,301</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">48,301</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">37,474</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">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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">3,407,489</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">3,407,489</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">3,277,808</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">3,277,808</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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">9,168</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">9,168</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">9,193</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">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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">239,718</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">239,718</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">212,674</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">212,674</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">&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$ 1,157,357 as of March 31, 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$ 1,067,536 (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: 12pt Times New Roman, Times, 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">18,295,923</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">18,348,334</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">18,958,671</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">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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">257,746</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">257,746</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">430,946</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">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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">604,532</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">604,532</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">723,242</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">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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">74,923</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">74,923</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">112,385</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">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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">2,873,462</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">2,873,462</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">2,959,181</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">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 March 31, 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>


<!-- Field: Page; Sequence: 35 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&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>

<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: 12pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 38%; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 31%; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 31%; padding-left: 2.85pt">
    <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: 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-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-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">56,149</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">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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">780,301</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">836,450</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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>

<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 March 31, 2023, the average yield of cash equivalents
corresponded to 95.83% of CDI (95.69% as of December 31, 2022).</P>

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


<!-- Field: Page; Sequence: 36 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, 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>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: 12pt Times New Roman, Times, 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>March 31, 2023</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>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%">297,858</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%">340,461</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%">594,689</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%">415,160</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">1,145</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">1,649,313</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 March 31, 2023, the average yield of the financial investments corresponded
to 102.90% 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: 12pt Times New Roman, Times, 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: 2.85pt; white-space: nowrap; width: 27%; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 27%; padding-left: 2.85pt">
    <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: 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">Agreement with the S&atilde;o Paulo Municipal Government (i)</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">41,432</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">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="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">512</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">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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,357</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">48,301</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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>


<!-- Field: Page; Sequence: 37 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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">&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"><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: 12pt Times New Roman, Times, 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="width: 26%; padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; 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%">2,400,402</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: 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">432,196</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,832,598</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; 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%">596,384</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: 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: 2.85pt; 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%">4,220</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: 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">361,425</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">962,029</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; 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%">3,758</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: 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">45,145</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">48,903</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">964,400</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; 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%">4,807,930</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: 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,400,441)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,407,489</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; 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%">3,194,099</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: 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">213,390</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">3,407,489</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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">&nbsp;</P>


<!-- Field: Page; Sequence: 38 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, 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: 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: 12pt Times New Roman, Times, 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: 2.85pt; white-space: nowrap; width: 31%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 31%; padding-left: 2.85pt">
    <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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="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: 9pt; line-height: 110%">2,397,133</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: 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: 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="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="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: 9pt; line-height: 110%">504,992</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: 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="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: 9pt; line-height: 110%">268,663</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: 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="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: 9pt; line-height: 110%">171,855</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: 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="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: 9pt; line-height: 110%">143,411</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: 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="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: 9pt; line-height: 110%">265,634</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: 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="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: 9pt; line-height: 110%">73,728</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: 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">982,514</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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; font: 11pt/110% Times New Roman, Times, Serif; 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; 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="white-space: nowrap; font: 11pt/110% Times New Roman, Times, Serif; padding-bottom: 1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Total past-due</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,410,797</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 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="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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,807,930</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 52%; 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: 2.85pt; white-space: nowrap; width: 24%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 24%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="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: 9pt; line-height: 110%">1,428,517</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: 9pt; line-height: 110%">1,280,088</FONT></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%">Reversal of losses</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: 9pt; line-height: 110%">(8,449)</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: 9pt; line-height: 110%">(10,516)</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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(19,627)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(18,265)</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: 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="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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,400,441</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,251,307</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 39 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 60%; padding-bottom: 1pt; 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: 2.85pt; width: 20%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 20%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 2.85pt; 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%">(190,138)</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: 9pt; line-height: 110%">(205,069)</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) with state entities &ndash; related parties </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: 9pt; line-height: 110%">(743)</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: 9pt; line-height: 110%">(1,406)</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%">Reversal of losses with the private sector/government entities</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: 9pt; line-height: 110%">8,449</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: 9pt; line-height: 110%">10,516</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">19,627</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">18,265</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: 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="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(162,805)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(177,694)</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 March 31, 2023, the Company has registered warrants
issued in its favor, currently totaling R$ 2,869,198<BR>
(R$ 2,807,318 as of December 31, 2022), which are not recognized in the Financial Statements because of the difficulty to obtain 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: 12pt Times New Roman, Times, Serif; width: 100%; background-color: white; border-collapse: collapse">
  <TR>
    <TD STYLE="width: 50%; 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="width: 25%; padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 25%; padding-left: 2.85pt">
    <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: 2.85pt; text-align: right; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">2,716,516</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; padding-right: 2.85pt; text-align: right; line-height: 12.1pt"><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: 2.85pt; text-align: right; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">105,845</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; padding-right: 2.85pt; text-align: right; line-height: 12.1pt"><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: 2.85pt; text-align: right; line-height: 12.1pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">13,951</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; padding-right: 2.85pt; text-align: right; line-height: 12.1pt"><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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 0.5pt solid">32,886</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/12.1pt Georgia, Times, Serif; margin: 0; text-align: right; border-bottom: Black 1.5pt double">2,869,198</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 40 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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>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: 12pt/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: 12pt/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: 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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 54%; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 22%; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 24%; padding-left: 2.85pt">
    <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"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">Accounts receivable</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></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">Current:</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></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;Sanitation services </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">138,798</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">144,937</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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="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">(50,338)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(49,595)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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="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></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: 9pt">&#9;- Monthly flow</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">8,767</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">13,376</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: 9pt">&#9;- GESP Agreement &ndash; 2015</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">101,460</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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="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></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 current</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">198,687</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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="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: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&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">Noncurrent:</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify">&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">&#9;Agreement for the installment payment of sanitation services</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">1,361</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,361</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;Reimbursement of additional retirement and pension benefits paid (G0):</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></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">957,309</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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="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></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 noncurrent</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">958,670</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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="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></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 receivables </FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,157,357</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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="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></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">Assets:</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></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">Sanitation services</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">89,821</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">96,703</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">Reimbursement of additional retirement and pension benefits paid (G0)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,067,536</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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="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></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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,157,357</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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="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></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">Liabilities:</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></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">Interest on capital payable </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">372,550</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">372,550</FONT></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 41 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 54%; padding-bottom: 1pt; text-align: justify">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; width: 23%">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2023</B></P></TD>
    <TD STYLE="width: 23%">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    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: 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>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-bottom: 1pt; text-align: justify"><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">162,966</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">143,699</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">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">(167,612)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(131,301)</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; 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></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 10pt Verdana, Helvetica, Sans-Serif; padding-bottom: 1pt; text-align: justify"><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">(52,593)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(36,632)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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: 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 March 31, 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$&nbsp;1,505,719 and R$&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: 12pt/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: 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 Marcy 31, 2023
and December 31, 2022, the amounts corresponding to such actuarial liability were R$&nbsp;2,010,180 and R$&nbsp;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: 12pt/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 March 31, 2023, the balance of the agreement totaled
R$ 8,786 and R$ 99,686 (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: 12pt/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>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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: 12pt/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 January to March 2023, expenses with employees assigned
to other state entities totaled R$&nbsp;672 (R$&nbsp;164 from January to March 2022).</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 January to March 2023 and in the same period in 2022.</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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 March 31, 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: 12pt/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 March 31, 2023, totaled R$ 133,608 (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: 12pt/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 Key Personnel </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 January to March 2023, expenses related to the compensation
of the members of the Fiscal Council appointed by the controlling shareholder and Management members totaled R$&nbsp;1,658 (R$ 1,597 from
January to March 2022).</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 January to March 2023, additional amounts of R$&nbsp;285,
referring to the executive officers&rsquo; bonus, were recorded (R$ 360 from January to March 2022).</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% 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>

<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"><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">As of March 31, 2023, the balance of principal and interest
of this agreement totaled R$ 7,351 recorded in current assets under &ldquo;Other assets&rdquo; (R$ 12,953 as of December 31, 2022), at
CDI + 1.2% p.a.</P>


<!-- Field: Page; Sequence: 43 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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 mature on December 30, 2021, and the last on December 30, 2023.</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>&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 March 31, 2023, the balance of principal and interest
of this agreement totaled R$ 321 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 Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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 March 31, 2023, the
balance of these financings totaled R$ 7.8 million (R$ 5.1 million 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>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>


<!-- Field: Page; Sequence: 44 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, 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 COLSPAN="2" STYLE="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 COLSPAN="3" STYLE="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>Profit (loss)
    for the period</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 34%; padding-right: 3.5pt; padding-left: 3.5pt">&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: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; text-align: center"><B>March</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>2023</B></P>
</DIV></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/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: 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 March</B></P>
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>2023</B></P>
</DIV></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 March</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="width: 11%; 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>(*)</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 March</B></P>
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0.2pt 0; 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: 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-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%">&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-top: 0.2pt; padding-bottom: 0.2pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 3.5pt; padding-left: 3.5pt">&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="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">64,001</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">4,630</FONT></TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,289</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="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">31,166</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">389</FONT></TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(2)</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="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">11,189</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">402</FONT></TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">267</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="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">33,745</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">4,016</FONT></TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">2,922</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="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">82,536</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">8,610</FONT></TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">7,677</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 (**)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">15,535</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(28)</FONT></TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(148)</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="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">6,181</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">5,439</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(258)</FONT></TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">67,034</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(122)</FONT></TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(6,427)</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">6,710</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(340)</FONT></TD>
    <TD STYLE="padding-top: 0.2pt; padding-bottom: 0.2pt; 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-top: 0.2pt; padding-bottom: 0.2pt; 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;SABESP
contributed R$&nbsp;5,077 as of December 2022, corresponding to 25% of the interest in the PGE. As of March 31, 2023, Servitec and Tecniplan
had an outstanding payable amount of R$&nbsp;10,156 related to the remaining interest of 75% in PGE.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(***)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;SABESP
contributed R$&nbsp;5,439 as of January 2023, corresponding to 49% of the interest in Cantareira SP Energia. As of March 31, 2023, Pacto
SP Energia had an outstanding payable amount of R$&nbsp;5,661 related to the remaining interest of 51% in Cantareira.</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 6pt; text-align: justify">(****)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Infranext&rsquo;s
share capital will be R$&nbsp;12,000. As of March 31, 2023, SABESP had an outstanding payable amount of R$&nbsp;4,950.</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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, 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 COLSPAN="2" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Investments</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 COLSPAN="3" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Equity accounting</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center; border-bottom: Black 0.5pt solid"><B>Interest percentage</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 28%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="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: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>March </B></P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>31, </B></P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="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: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>December</B></P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>31, </B></P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="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 Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to March</B></P>
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="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 Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to March</B></P>
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>2023</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>(*)</B></P></TD>
    <TD STYLE="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 Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>January to March</B></P>
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>2022</B></P>
</DIV></TD>
    <TD STYLE="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: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>March</B></P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>31,</B></P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="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: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>December</B></P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 0; text-align: center"><B>31,</B></P>
    <P STYLE="font: 7.5pt Georgia, Times, Serif; margin: 1pt 0 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">&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="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></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: 8pt">Sesamm</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: 8pt">23,041</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: 8pt">21,374</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">1,667</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">464</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: 8pt">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: 8pt">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: 8pt">&Aacute;guas de Andradina </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: 8pt">9,349</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: 8pt">9,233</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">116</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">(1)</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: 8pt">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: 8pt">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: 8pt">&Aacute;guas de Castilho</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: 8pt">3,357</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: 8pt">3,236</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">121</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">80</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: 8pt">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: 8pt">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: 8pt">Attend Ambiental</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: 8pt">15,186</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: 8pt">13,379</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">1,807</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">1,315</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: 8pt">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: 8pt">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: 8pt">Aquapolo Ambiental</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: 8pt">40,442</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: 8pt">36,223</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">4,219</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">3,762</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: 8pt">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: 8pt">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: 8pt">Paulista Geradora de Energia</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: 8pt">6,422</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: 8pt">6,429</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">(7)</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">(37)</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: 8pt">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: 8pt">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: 8pt">Cantareira SP Energia</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: 8pt">5,803</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: 8pt">490</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">5,439</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: 8pt">(126)</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</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: 8pt">-</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: 8pt">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: 8pt">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: 8pt">FOXX URE-BA Ambiental</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: 8pt">13,407</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: 8pt">13,852</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">865</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: 8pt">(24)</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(1,286)</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: 8pt">-</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: 8pt">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: 8pt">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: 8pt">Infranext Solu&ccedil;&otilde;es em Pavimenta&ccedil;&atilde;o </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">297</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">450</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt 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: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(153)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt 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: 8pt 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: 8pt">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: 8pt">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: 8pt">Total</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: 8pt">117,304</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: 8pt">104,666</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6,304</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: 8pt">7,620</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(1,286)</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: 8pt">5,583</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">&nbsp;</P>
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">FOXX URE-BA Ambiental &ndash; Fair value (**)</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: 8pt">26,148</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: 8pt">-</FONT></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&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: 8pt">Other investments </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt 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; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">6,099</P></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">&nbsp;</P>
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt">Overall total</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 2.25pt double">149,551</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 2.4pt 0 1pt; text-align: right; border-bottom: Black 2.25pt double">110,765</P></TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; padding-top: 2.4pt; padding-bottom: 1pt; text-align: right">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; 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 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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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>March 31, 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">(12)</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">46,714</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/12pt 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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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>March 31, 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">(12)</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">46,114</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 March 31, 2023, the market value of these properties
was approximately R$ 393,600 (R$ 386,000 as of December 31, 2022).</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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/12pt Times New Roman, 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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 25%; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; width: 14%; padding-left: 2.85pt">
    <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: 2.85pt; width: 14%; padding-left: 2.85pt">
    <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: 2.85pt; width: 17%; padding-left: 2.85pt">
    <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: 2.85pt; width: 15%; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 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>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 2.85pt; 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,204,867</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">280</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(1,105,061)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">8,714,054</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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 25%; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; width: 14%; padding-left: 2.85pt">
    <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: 2.85pt; width: 14%; padding-left: 2.85pt">
    <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: 2.85pt; width: 17%; padding-left: 2.85pt">
    <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: 2.85pt; width: 15%; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 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>
    <TD STYLE="white-space: nowrap; vertical-align: bottom; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 2.85pt; 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">958,070</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">193</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(973,984)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">8,534,381</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: 12pt/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 of the period
are located in the municipalities of S&atilde;o Paulo, Guarulhos, and S&atilde;o Bernardo do Campo, totaling R$ 521 million, R$ 61 million,
and R$ 31 million, respectively. </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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$ 533 million, R$ 103 million,
and R$ 99 million, respectively.</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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">(iii)</FONT></TD><TD STYLE="text-align: justify"><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 Franca, totaling<BR>
R$ 2,818 million, R$ 229 million, and R$ 227 million, 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">As of March 31, 2023, the contract asset included R$
175,145, recorded as a lease (R$ 276,893 as of December 31, 2022). Leases are part of construction costs and, since June 2020, additional
works are being executed by the Company.</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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, and inflation adjustments,
and exchange rate changes in the contract asset during the construction period. From January to March 2023, the Company capitalized R$
167,802 (R$ 120,324 from January to December 2022).</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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 March 31, 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 January to March 2023, the construction margin was
R$&nbsp;26,519 (R$&nbsp;20,685 from January to March 2022).</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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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">As a result of the construction of priority projects
related to water and sewage systems, the Company was required to expropriate third-party properties, whose owners will be 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 January to March 2023, expropriations totaled R$&nbsp;4,015 (R$&nbsp;29,863 from
January to March 2022).</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: 12pt/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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD COLSPAN="3" STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; width: 9%; padding-left: 2.85pt">
    <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: 2.85pt; width: 11%; padding-left: 2.85pt">
    <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: 2.85pt; width: 10%; padding-left: 2.85pt">
    <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: 2.85pt; width: 9%; padding-left: 2.85pt">
    <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: 2.85pt; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; width: 10%; padding-left: 2.85pt">
    <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="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="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>
    <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; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">725,410</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: 8pt; line-height: 110%">(227,941)</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: 8pt; line-height: 110%">497,469</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: 8pt; line-height: 110%">722,730</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: 8pt; line-height: 110%">(223,404)</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: 8pt; line-height: 110%">499,326</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,573,971</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: 8pt; line-height: 110%">(949,346)</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: 8pt; line-height: 110%">624,625</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: 8pt; line-height: 110%">1,585,271</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: 8pt; line-height: 110%">(933,232)</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: 8pt; line-height: 110%">652,039</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">27,415,393</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: 8pt; line-height: 110%">(8,762,569)</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: 8pt; line-height: 110%">18,652,824</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: 8pt; line-height: 110%">26,875,408</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: 8pt; line-height: 110%">(8,537,949)</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: 8pt; line-height: 110%">18,337,459</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">(458,007)</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: 8pt; line-height: 110%">1,251,750</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: 8pt; line-height: 110%">1,709,757</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: 8pt; line-height: 110%">(444,765)</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: 8pt; line-height: 110%">1,264,992</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">26,086,961</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: 8pt; line-height: 110%">(8,005,012)</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: 8pt; line-height: 110%">18,081,949</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: 8pt; line-height: 110%">25,584,703</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: 8pt; line-height: 110%">(7,714,252)</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: 8pt; line-height: 110%">17,870,451</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">1,265,086</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: 8pt; line-height: 110%">(687,583)</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: 8pt; line-height: 110%">577,503</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: 8pt; line-height: 110%">1,249,881</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: 8pt; line-height: 110%">(654,477)</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: 8pt; line-height: 110%">595,404</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt; line-height: 110%">169,465</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: 8pt; line-height: 110%">(111,384)</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: 8pt; line-height: 110%">58,081</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: 8pt; line-height: 110%">170,921</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: 8pt; line-height: 110%">(95,869)</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: 8pt; line-height: 110%">75,052</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <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="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">58,946,043</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(19,201,842)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">39,744,201</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <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: 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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">
    <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="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">
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></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%">-</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%">4,098</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%">(955)</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%">(6)</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%">(4,994)</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%">497,469</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; 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%">-</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%">2,589</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%">331</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%">(85)</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%">(30,249)</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%">624,625</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: 3pt; padding-left: 3.5pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 7pt; line-height: 110%">2</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%">569,717</FONT></TD>
    <TD STYLE="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%">(288)</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%">(2,055)</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%">(252,011)</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%">18,652,824</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%">(13,242)</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%">1,251,750</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%">-</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%">513,453</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%">(1,720)</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%">(1,056)</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%">(299,179)</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%">18,081,949</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%">15,204</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%">(33,105)</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%">577,503</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%">320</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%">(17,261)</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%">58,081</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">322</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">1,105,061</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">(28,780)</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">(3,232)</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">(650,041)</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">39,744,201</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 12pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt">(*) As of March 31, 2023,
Concession agreements &ndash; equity value, and Program contracts included leases totaling R$ 51,692 and R$ 165,104 (</FONT><FONT STYLE="font-size: 9.5pt">R$
54,356 and R$ 168,216 as of December 31, 2022)</FONT><FONT STYLE="font-size: 10pt">, respectively.</FONT></P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 25%; padding-right: 3.5pt; padding-bottom: 1pt; padding-left: 3.5pt; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 10%; 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>December 31, 2021</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 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Additions</B></P></TD>
    <TD STYLE="white-space: nowrap; width: 12%; 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>Transfer of contract
    asset</B></P></TD>
    <TD STYLE="width: 13%; 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>Transfers </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 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: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>Amortization</B></P></TD>
    <TD STYLE="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: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>March 31,</B></P>
    <P STYLE="font: 8pt 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-bottom: 1pt; padding-left: 3.5pt; 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; 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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; line-height: 110%">(4,657)</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: 8pt; line-height: 110%">486,400</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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; line-height: 110%">5,948</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: 8pt; line-height: 110%">46</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: 8pt; 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: 8pt; line-height: 110%">(27,004)</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: 8pt; line-height: 110%">660,431</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: 8pt; 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: 8pt; 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: 8pt; line-height: 110%">5,189</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: 8pt; line-height: 110%">769,541</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: 8pt; line-height: 110%">(107)</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: 8pt; line-height: 110%">(1,255)</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: 8pt; line-height: 110%">(231,923)</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: 8pt; line-height: 110%">17,693,466</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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; line-height: 110%">(13,241)</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: 8pt; line-height: 110%">1,304,716</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: 8pt; 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: 8pt; 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: 8pt; line-height: 110%">181</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: 8pt; line-height: 110%">176,705</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: 8pt; line-height: 110%">3,640</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: 8pt; line-height: 110%">(976)</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: 8pt; line-height: 110%">(260,765)</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: 8pt; line-height: 110%">16,077,556</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: 8pt; 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: 8pt; 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: 8pt; 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: 8pt; line-height: 110%">21,790</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: 8pt; 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: 8pt; 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: 8pt; line-height: 110%">(27,899)</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: 8pt; line-height: 110%">592,625</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: 8pt; 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: 8pt/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: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">8,730</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <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: 3.5pt; padding-left: 3.5pt">
    <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="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(17,696)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">94,886</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: 8pt; line-height: 110%">Total </FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">36,503,834</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">14,100</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">973,984</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,579</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(2,232)</P></TD>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(583,185)</P></TD>
    <TD STYLE="padding-right: 3.5pt; padding-left: 3.5pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">36,910,080</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 March 31, 2022, the lines Concession agreements
&ndash; equity value and Program contracts included leases in the amounts of R$ 62,359 and R$ 2021 (R$ 65,012 and R$ 180,669 as of December
31, 2022), respectively.</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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&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: 12pt/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 March 31, 2023, the amounts not yet disbursed were
recorded in &ldquo;Program contract commitments&rdquo; under current and noncurrent liabilities, totaling R$&nbsp;62,601 and R$&nbsp;12,322
(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: 12pt/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: 12pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 36%; padding-top: 1pt; padding-bottom: 1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 1pt 2.85pt; width: 32%; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 1pt 2.85pt; width: 32%; text-align: justify; line-height: 110%">&nbsp;</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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: right; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 1pt 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">247,467</FONT></TD>
    <TD STYLE="padding: 1pt 2.85pt; 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: right; border-bottom: Black 0.5pt solid">2,683,425</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: right; border-bottom: Black 1.5pt double">2,930,892</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 12pt Times New Roman, Times, 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>March 31, 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%">98,809</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%">98,809</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">127,173</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">2,647,480</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">2,774,653</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">225,982</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">2,647,480</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">2,873,462</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 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: 12pt/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 5.0% and 4.8% as
of March 31, 2023 and 2022, respectively.</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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 62%; 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="width: 19%; 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>March 31, </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: 19%; 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%">175,145</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%">405,431</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">(188,635)</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%">216,796</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%">152,501</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%">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%">11,138</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%">5,826</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">(111,384)</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">58,081</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">450,022</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: 12pt Times New Roman, Times, 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-right: 3.5pt; padding-left: 3.5pt">&nbsp;</TD>
    <TD STYLE="width: 23%; 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>March 31, </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 1pt 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="width: 23%; 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>March 31, </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="vertical-align: bottom; 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%">(23,037)</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%">(23,461)</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="vertical-align: bottom; 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%">(18,127)</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%">(17,398)</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="vertical-align: bottom; 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">(8,518)</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">(6,322)</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">(49,682)</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">(47,181)</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: 12pt/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 March 31, 2023, the accounting balances of the
agreements in force recorded in contract asset and intangible assets were R$ 107,882 and R$ 2,284,215 (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>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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>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: 12pt/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: 12pt Times New Roman, Times, 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD COLSPAN="4" STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; vertical-align: bottom; width: 8%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; vertical-align: bottom; width: 11%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; vertical-align: bottom; width: 9%; padding-left: 2.85pt">
    <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: 2.85pt; vertical-align: top; width: 9%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; vertical-align: bottom; width: 8%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; vertical-align: bottom; width: 11%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; vertical-align: bottom; width: 9%; padding-left: 2.85pt">
    <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: 2.85pt; vertical-align: top; width: 10%; padding-left: 2.85pt">
    <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="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: 8pt; line-height: 110%">94,228</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: 8pt; 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: 8pt; line-height: 110%">94,228</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: 8pt; 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: 8pt; line-height: 110%">94,228</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: 8pt; 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: 8pt; line-height: 110%">94,228</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: 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="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: 8pt; line-height: 110%">91,262</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: 8pt; line-height: 110%">(42,638)</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: 8pt; line-height: 110%">48,624</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: 8pt; line-height: 110%">2.1%</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: 8pt; line-height: 110%">90,311</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: 8pt; line-height: 110%">(42,343)</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: 8pt; line-height: 110%">47,968</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: 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="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: 8pt; line-height: 110%">427,609</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: 8pt; line-height: 110%">(296,254)</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: 8pt; line-height: 110%">131,355</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: 8pt; line-height: 110%">14.6%</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: 8pt; line-height: 110%">412,828</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: 8pt; line-height: 110%">(291,963)</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: 8pt; line-height: 110%">120,865</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: 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="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: 8pt; line-height: 110%">14,323</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: 8pt; line-height: 110%">(9,918)</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: 8pt; line-height: 110%">4,405</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: 8pt; line-height: 110%">10.1%</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: 8pt; line-height: 110%">12,578</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: 8pt; line-height: 110%">(10,083)</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: 8pt; line-height: 110%">2,495</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: 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="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: 8pt; line-height: 110%">41,640</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: 8pt; line-height: 110%">(15,257)</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: 8pt; line-height: 110%">26,383</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: 8pt; line-height: 110%">6.7%</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: 8pt; line-height: 110%">38,528</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: 8pt; line-height: 110%">(15,032)</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: 8pt; line-height: 110%">23,496</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: 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">60,199</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(324)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">59,875</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">729,261</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(364,391)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">364,870</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">11.0%</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <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: 12pt/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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
<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>March 31,</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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">94,228</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; 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-left: 2.85pt; 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-left: 2.85pt; 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-left: 2.85pt; 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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">47,968</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,037</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(85)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; 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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(296)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">48,624</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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">120,865</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">16,881</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">87</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(243)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(6,235)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">131,355</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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,495</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; 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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,059</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; 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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(149)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4,405</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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">23,496</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">3,027</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">291</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(40)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(391)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">26,383</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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">10,009</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(21)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">59,875</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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">30,954</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">2,352</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(283)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(7,092)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">364,870</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"><FONT STYLE="letter-spacing: -0.05pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 12%; padding-left: 2.85pt">
<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>March 31,</B></P>
    <P STYLE="font: 7pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">94,213</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; 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-left: 2.85pt; 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-left: 2.85pt; 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-left: 2.85pt; 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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">45,498</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">35</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(272)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(12)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(290)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">44,959</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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">115,154</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">7,579</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(2,946)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(143)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(5,728)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">113,916</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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,472</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; 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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(80)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; 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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(151)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,241</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-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">22,079</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">899</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(576)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(19)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(358)</FONT></TD>
    <TD STYLE="padding-left: 2.85pt; white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">22,025</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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">53</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">102</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(22)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">11,874</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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">8,566</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(3,772)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(174)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(6,549)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">289,228</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>


<!-- Field: Page; Sequence: 52 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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"><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>March 31, 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="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>Noncurrent</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="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="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">56,350</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">101,800</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="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="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">50,581</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">39,750</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">90,331</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="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">166,684</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">167,090</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">333,774</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="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">-</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">864,948</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">864,948</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="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">499,772</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">499,772</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="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">1,269,022</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">1,269,022</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="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">299,692</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">698,405</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">998,097</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="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">-</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">1,197,849</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">1,197,849</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="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">1,293,662</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">1,293,662</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="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">-</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">998,139</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">998,139</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="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">98,979</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">1,453,866</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">1,552,845</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">3,379</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">3,379</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">7,237</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">21,616</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">28,853</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">4,903</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">14,709</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">19,612</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">27,036</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">26,974</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">54,010</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="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">154,934</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">619,647</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">774,581</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="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">33,916</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">382,938</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">416,854</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="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">6,593</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">14,944</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">21,537</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="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">2,073,574</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">2,254,923</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">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="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">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">835,221</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">872,561</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="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">452,149</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">466,249</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="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</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">671,224</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">751,224</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">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="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">44,849</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">302,122</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">346,971</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="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">60,994</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">24,835</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">85,829</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="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">9,043</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">5,133</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">14,176</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="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">350,923</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">350,923</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="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">1,677,982</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">13,983,939</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">15,661,921</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: 12pt Times New Roman, Times, Serif; margin: 0">&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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, 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"><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>March 31, 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>Noncurrent</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$ 25,695 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">52,217</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">78,325</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">130,542</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$ 83,978 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">406,653</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">406,653</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$ 78,794 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">30,888</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">357,295</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">388,183</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; 7,490,795 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">44,104</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">242,569</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">286,673</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; 6,735,040 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">39,654</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">217,962</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">257,616</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; 3,753,048 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">11,048</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">131,740</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">142,788</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; 25,389,252 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">69,403</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">900,624</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">970,027</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 (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">39,010</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">39,010</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">12,510</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">12,510</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">298,834</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">2,335,168</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">2,634,002</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">1,976,816</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">16,319,107</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">18,295,923</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 March 31, 2023: US$ 5.0804; &yen;&nbsp;0.03827 (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 March 31, 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>

<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 2pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, 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), 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), 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">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">5.20% 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>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify; text-indent: -35.45pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, 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$ 25,695 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">3.31% (*)</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$</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">Inter-American Development Bank - IDB 4623 &ndash; US$ 83,978 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">1.12% (*)</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">US$</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; padding-right: 3.5pt; padding-bottom: 0.2pt; padding-left: 3.5pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">International Bank for Reconstruction and Development (IBRD) &ndash; </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">IBRDs 7662 and 8916 - US$ 78,794 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">2.85% (*)</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; 7,490,795 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; 6,735,040 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; 3,753,048 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; 25,389,252 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"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">IDB 1983AB </FONT><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8.5pt">&ndash; US$ 7,692 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">-</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">2023</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">2.08% to 2.38% (*)</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">US$</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 8pt/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">(*) Rates comprising SOFR + contractually defined spread.</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>


<!-- Field: Page; Sequence: 56 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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 Georgia, Times, Serif; margin: 0">(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Payment schedule &ndash; accounting
balances as of March 31, 2023</P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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">377,852</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">1,077,166</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">1,207,210</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">1,085,512</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">1,720,562</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">651,547</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">1,527,545</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">7,647,394</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">74,079</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">101,891</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">108,253</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">115,014</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">122,187</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">129,675</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">901,746</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">1,552,845</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">179,344</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">234,620</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">214,281</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">204,396</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">191,790</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">72,559</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">221,836</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">1,318,826</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">IDB 2202</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">90,674</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">181,349</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">181,349</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">181,349</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">181,349</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">181,349</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">1,257,504</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">2,254,923</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">IDB INVEST</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">18,670</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">39,550</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">44,300</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">106,390</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">108,728</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">143,591</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">411,332</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">872,561</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">IDB INVEST 2022</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">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">38,275</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">38,431</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">38,431</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">38,431</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">284,481</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">466,249</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">IFC</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">80,000</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">80,000</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">80,000</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">80,000</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">80,000</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">80,000</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">271,224</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">751,224</FONT></TD></TR>
  <TR>
    <TD STYLE="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">44,849</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">47,149</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">36,931</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">30,224</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">33,411</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">154,407</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">346,971</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">55,373</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">16,401</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">9,518</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">4,061</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">476</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">85,829</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">8,296</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">2,986</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">2,753</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">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">-</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">14,176</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">348,622</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">2,301</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">350,923</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">1,247,010</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">1,795,213</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">1,933,088</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">1,852,225</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">2,473,747</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">1,330,563</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">5,030,075</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">15,661,921</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">26,108</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">52,217</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">63,444</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">22,455</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">22,455</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">22,455</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">328,061</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">537,195</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">15,444</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">30,887</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">30,887</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">30,887</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">30,887</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">30,887</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">218,304</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">388,183</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">87,629</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">164,209</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">164,209</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">164,209</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">164,209</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">164,209</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">748,430</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">1,657,104</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">IDB 1983AB</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">39,010</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">-</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">39,010</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">12,510</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">-</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">12,510</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">180,701</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">247,313</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">258,540</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">217,551</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">217,551</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">217,551</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">1,294,795</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">2,634,002</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">1,427,711</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">2,042,526</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">2,191,628</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">2,069,776</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">2,691,298</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">1,548,114</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">6,324,870</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">18,295,923</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: 57 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, 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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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 changes 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>March </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>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">(516)</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">60,883</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">5,463</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">(206,330)</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">(363,123)</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">162,197</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">46,336</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">2,859</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">7,874,135</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">50,852</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">6,250</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">1,718</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">(29,853)</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">(27,891)</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">23,539</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">6,393</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">1,557,193</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">3,354</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">984</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">(25,753)</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">(61,940)</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">19,891</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">5,670</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</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">1,323,264</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">(165,514)</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">(90,674)</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">26,253</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">58,942</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">239</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">2,279,796</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</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">(71,521)</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">(18,670)</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">22,661</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">12,244</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">166</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">888,499</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</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">-</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">29,484</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">228</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">804,237</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">-</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">18,405</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">64</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">487,796</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <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 (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">(13,603)</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">(10,873)</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">13,603</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">346,971</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">320</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">(4,523)</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">(20,389)</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">9,047</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">85,829</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">22</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">(161)</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">(1,581)</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">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 0.2pt; 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 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">14,201</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">320</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">54,481</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">(516)</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">70,509</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">8,165</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 0.2pt; text-align: right; border-bottom: Black 0.5pt solid">(517,258)</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">(595,141)</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">295,756</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">159,071</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">3,621</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">15,661,921</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">IDB</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">50,342</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">(15,365)</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">(2,474)</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">(26,343)</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">5,062</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">-</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">237</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">544,152</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">18,892</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">(1,588)</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">(10,585)</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">(10,061)</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">(16,014)</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">8,691</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">106</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">389,259</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">(56,819)</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">(14,057)</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">(78,741)</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">6,635</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">289</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</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">1,660,467</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">(1,056)</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">661</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">221</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">104</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">40,124</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">69,234</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 0.5pt solid">(1,588)</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">(83,825)</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">(26,592)</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">(121,098)</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">21,049</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">566</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">498</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">2,634,002</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">320</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">123,715</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">(2,104)</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">(13,316)</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 0.3pt; text-align: right; border-bottom: Black 1.5pt double">8,165</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 0.3pt; text-align: right; border-bottom: Black 1.5pt double">(543,850)</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">(716,239)</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">316,805</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">159,637</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">4,119</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">18,295,923</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 58 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 25%; padding-right: 3.5pt; padding-left: 3.5pt">&nbsp;</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: 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 changes and incorporated interest- 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>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: 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>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>March </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>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">(2,733)</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">69,242</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">(100,409)</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">(311,166)</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">112,677</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">45,709</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">2,696</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">8,283,984</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">39,320</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">1,360</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">941</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">(28,947)</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">(24,385)</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">17,152</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">11,845</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">1,500,399</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">-</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">114</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">123</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">(25,644)</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">(52,463)</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">12,737</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">12,890</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</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">1,340,665</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">(108,419)</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">(90,674)</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">19,752</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">47,473</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">239</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">2,457,813</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</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">(44,803)</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">(16,130)</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">27,039</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">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">923,214</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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">(13,451)</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">(10,834)</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">13,451</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">386,477</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">8,730</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">(3,947)</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">(21,370)</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">7,894</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">117,276</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">1,715</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">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">-</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">(202)</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">(1,269)</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">196</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">7</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">14,543</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">8,730</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">1,041,035</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">(2,733)</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">70,718</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">1,064</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">(325,822)</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">(528,291)</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">210,898</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">117,924</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">15,024,371</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">IDB</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">32,205</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">(60,014)</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">(3,277)</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">(28,316)</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">1,739</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">55</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">330,229</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">-</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">(1,547)</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">(63,833)</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">(944)</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">(15,214)</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">398</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">76</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">339,817</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">(457,218)</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">(17,588)</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">(89,447)</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">6,116</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">1,214</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">51</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">1,860,561</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">(12,965)</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">-</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">303</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">122</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">104</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">73,112</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">47,751</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">(1,547)</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">(594,030)</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 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">(21,809)</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">(132,977)</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">8,556</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">1,336</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">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 1pt; text-align: right; border-bottom: Black 0.5pt solid">2,603,719</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">8,730</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">1,088,786</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">(4,280)</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">(523,312)</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 1.5pt double">1,064</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">(347,631)</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">(661,268)</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">219,454</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">119,260</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">3,451</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">17,628,090</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>


<!-- Field: Page; Sequence: 59 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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% 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 three-month period
ended March 31, 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 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% 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: 12pt/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 covenants as of March 31, 2023.</P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, 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; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">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; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">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; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">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; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">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">Total Adjusted Debt / Adjusted EBITDA</FONT></TD>
    <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%">Lower than 3.65</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; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">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; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Higher than 1.00</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD COLSPAN="2" STYLE="padding-top: 6pt; padding-bottom: 1pt; 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 installments 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 March 31, 2023, and December 31, 2022, the Company
met the requirements set forth by its borrowings and financing agreements.</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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 68%; 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="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>March 31, 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: 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%">1,042</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: 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%">279</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: 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%">1,097</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: 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%">1,210</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">14</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">3,642</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
March 31, 2023 (US$ 1.00 = R$ 5.0804; &yen; 1.00 = R$ 0.03827).</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: 12pt/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: 12pt Times New Roman, Times, 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: 2.85pt; white-space: nowrap; width: 28%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 28%; padding-left: 2.85pt">
    <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: 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="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="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: 9pt; line-height: 110%">216,462</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: 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="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: 9pt; line-height: 110%">41,879</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: 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">8,096</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">266,437</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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 CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, 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: 2.85pt; white-space: nowrap; width: 28%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 28%; padding-left: 2.85pt">
    <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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; 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="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="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: 9pt; line-height: 110%">122,165</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: 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="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: 9pt; line-height: 110%">110,329</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: 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="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: 9pt; line-height: 110%">43,921</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: 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="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: 9pt; line-height: 110%">6,314</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: 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">55,525</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">338,254</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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">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>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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>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: 12pt 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; text-align: justify"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, 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: 2.85pt; white-space: nowrap; width: 24%; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 24%; padding-left: 2.85pt">
    <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: 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="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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">573,119</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">136,832</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">45,800</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">192,670</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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">169,577</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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">1,117,998</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(350,319)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(465,454)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(345,260)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(42,637)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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">(12,290)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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">(1,309,521)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 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="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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(191,523)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt 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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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>March 31,</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: 2.85pt; 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: 2.85pt; 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%">12,715</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; 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%">573,119</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: 2.85pt; 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: 2.85pt; 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%">(4,774)</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: 9pt; line-height: 110%">136,832</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: 2.85pt; 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: 2.85pt; 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%">(288)</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: 9pt; line-height: 110%">45,800</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: 2.85pt; 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: 2.85pt; 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%">(6,693)</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: 9pt; line-height: 110%">192,670</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">(2,221)</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">169,577</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">(1,261)</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">1,117,998</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: 2.85pt; 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: 2.85pt; 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%">3,498</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: 9pt; line-height: 110%">(350,319)</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: 2.85pt; 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: 2.85pt; 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%">(7,785)</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: 9pt; line-height: 110%">(465,454)</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: 2.85pt; 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: 2.85pt; 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%">1,390 </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: 9pt; line-height: 110%">(345,260)</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: 2.85pt; 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: 2.85pt; 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: 2.85pt; 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: 2.85pt; 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: 2.85pt; 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%">686</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: 9pt; line-height: 110%">(42,637)</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">1,227</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">(12,290)</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">(984)</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">(1,309,521)</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">(2,245)</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">(191,523)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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>March 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-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: 2.85pt; 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: 2.85pt; 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%">(537)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; 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%">502,837</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: 2.85pt; 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: 2.85pt; 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%">(2,131)</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: 9pt; line-height: 110%">148,446</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: 2.85pt; 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: 2.85pt; 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%">118 </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: 9pt; line-height: 110%">47,707</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: 2.85pt; 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: 2.85pt; 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%">(7,207)</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: 9pt; line-height: 110%">176,756</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">(668)</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">126,424</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">(10,425)</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">1,002,170</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: 2.85pt; 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: 2.85pt; 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%">3,930</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: 9pt; line-height: 110%">(364,305)</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: 2.85pt; 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: 2.85pt; 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%">(6,590)</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: 9pt; line-height: 110%">(411,521)</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: 2.85pt; 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: 2.85pt; 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%">2,311</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: 9pt; line-height: 110%">(350,951)</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: 2.85pt; 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: 2.85pt; 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: 2.85pt; 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: 2.85pt; 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: 2.85pt; 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%">690</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: 9pt; line-height: 110%">(45,389)</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">926</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">(13,630)</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">1,267</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">(1,295,067)</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">(9,158)</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">(292,897)</P></TD></TR>
  </TABLE>

<!-- Field: Page; Sequence: 63 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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 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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 48%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center; line-height: 110%; font-size: 11pt">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; width: 26%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 26%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    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%">&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="white-space: nowrap; 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="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: 2.85pt; 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%">1,132,945</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: 9pt; line-height: 110%">1,474,202</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: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="white-space: nowrap; 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="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: 2.85pt; 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%">(385,201)</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: 9pt; line-height: 110%">(501,229)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Permanent differences:</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="white-space: nowrap; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%; font-size: 11pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&#9;Provision Law 4,819/1958 &ndash; G0 (i)</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: 9pt; line-height: 110%">(10,772)</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: 9pt; line-height: 110%">(7,972)</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-size: 11pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&#9;Donations</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: 9pt; line-height: 110%">(1,065)</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: 9pt; line-height: 110%">(2,377)</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-size: 11pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&#9;Other differences</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">11,305</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">12,915</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-size: 11pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;</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="white-space: nowrap; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%; font-size: 11pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Income tax and social contribution</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(385,733)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(498,663)</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-size: 11pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">&nbsp;</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="white-space: nowrap; 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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; line-height: 110%; font-size: 11pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Current income tax and social contribution</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: 9pt; line-height: 110%">(383,488)</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: 9pt; line-height: 110%">(489,505)</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-size: 11pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Deferred income tax and social contribution</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: 9pt; line-height: 110%">(2,245)</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: 9pt; line-height: 110%">(9,158)</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-size: 11pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Effective rate</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: 9pt; line-height: 110%">34%</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: 9pt; line-height: 110%">34%</FONT></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 0 0 0.5in">(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Permanent difference related
to the provision for the actuarial liability. See Note 21 (ii) and (v).</P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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>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>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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>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: 12pt/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: 12pt Times New Roman, Times, 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 10pt/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: 2.85pt; width: 11%; padding-left: 2.85pt">
    <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: 2.85pt; width: 11%; padding-left: 2.85pt">
    <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: 2.85pt; width: 11%; padding-left: 2.85pt">
    <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="width: 1%; padding-right: 2.85pt; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; width: 11%; padding-left: 2.85pt">
    <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: 2.85pt; width: 11%; padding-left: 2.85pt">
    <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: 2.85pt; width: 11%; padding-left: 2.85pt">
    <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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">134,033</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right; line-height: 110%; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(6,346)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">127,687</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">151,023</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; text-align: right; line-height: 110%; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(6,226)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">263,582</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(54)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">263,528</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">257,080</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(53)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">105,046</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,134)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">103,912</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">99,462</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,131)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">91,767</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(16,361)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">75,406</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">79,532</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(16,037)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">657,408</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(12,503)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">644,905</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">654,277</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(13,979)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; 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-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">433,810</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(37)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">433,773</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(36)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">406,836</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-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,685,646</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">(36,435)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,649,211</P></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-left: 2.85pt">
    <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-right: 2.85pt; padding-left: 2.85pt">
    <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-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right">&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>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">911,048</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">-</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">911,048</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%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">924,038</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: 9pt; 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: 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">774,598</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(36,435)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; line-height: 110%; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">738,163</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%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">724,208</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: 9pt; line-height: 110%">(37,462)</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: 9pt; line-height: 110%">686,746</FONT></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: 12pt/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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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>March </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>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="vertical-align: bottom; padding-right: 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%">1,918</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">3,790</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(21,540)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(1,158)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">134,033</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="vertical-align: bottom; padding-right: 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%">1,992</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">5,552</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(1,042)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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="vertical-align: bottom; padding-right: 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%">263,582</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="vertical-align: bottom; padding-right: 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%">5,701</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">7,154</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(3,478)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(3,793)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">105,046</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="vertical-align: bottom; padding-right: 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%">11,039</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">1,658</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(455)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">91,767</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="vertical-align: bottom; padding-right: 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%">9,894</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">13,486</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(5,799)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(14,450)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">657,408</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="vertical-align: bottom; 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">22,400</P></TD>
    <TD STYLE="vertical-align: bottom; 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">18,655</P></TD>
    <TD STYLE="vertical-align: bottom; 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="vertical-align: bottom; 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">(14,117)</P></TD>
    <TD STYLE="vertical-align: bottom; 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">433,810</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="vertical-align: bottom; padding-right: 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%">52,944</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">50,295</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(31,866)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">(33,973)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding-right: 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%">1,685,646</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="vertical-align: bottom; 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">(271)</P></TD>
    <TD STYLE="vertical-align: bottom; 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">(696)</P></TD>
    <TD STYLE="vertical-align: bottom; 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">533</P></TD>
    <TD STYLE="vertical-align: bottom; 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">1,461</P></TD>
    <TD STYLE="vertical-align: bottom; 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">(36,435)</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="vertical-align: bottom; 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">52,673</P></TD>
    <TD STYLE="vertical-align: bottom; 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">49,599</P></TD>
    <TD STYLE="vertical-align: bottom; 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">(31,333)</P></TD>
    <TD STYLE="vertical-align: bottom; 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">(32,512)</P></TD>
    <TD STYLE="vertical-align: bottom; 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">1,649,211</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <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>March 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>
    <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%">7,053</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%">8,247</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%">(8,595)</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%">(3,238)</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%">171,725</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%">1,459</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%">13,032</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%">(60,604)</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)</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%">431,731</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%">3,048</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%">3,540</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%">(2,973)</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%">(1,151)</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%">98,065</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%">11,928</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%">3,582</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%">(703)</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%">(204)</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%">72,112</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%">10,077</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%">8,889</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%">(7,467)</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%">(12,241)</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%">349,220</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">10,440</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">14,651</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">(39)</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">356,078</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%">44,005</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%">51,941</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%">(80,642)</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%">(16,883)</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%">1,478,931</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">(13,349)</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">(3,041)</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">7,325</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">2,749</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">(38,333)</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">30,656</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">48,900</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">(73,317)</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">(14,134)</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">1,440,598</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: 12pt/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>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="white-space: nowrap; width: 46%; padding-bottom: 1pt; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; vertical-align: bottom; width: 27%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.75pt solid"><B>March 31, 2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; vertical-align: bottom; width: 27%; padding-left: 2.85pt">
    <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: 2.85pt; 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%">205,668</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: 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: 2.85pt; 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%">1,187,990</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: 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: 2.85pt; 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%">1,183,563</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: 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: 2.85pt; 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%">1,946,987</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: 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: 2.85pt; 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%">2,540,106</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: 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.75pt solid">3,870,028</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">10,934,342</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 12pt/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: 12pt/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>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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: 12pt/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: 12pt/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, hazardous duty premium, prior notice, change of function, salary equalization,
service outsourcing, and others, which are at various court levels.</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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: 12pt/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, 2022, 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 March 31, 2023, R$ 390.4 million
was available for use.</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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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: 12pt Times New Roman, Times, 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>March 31, 2023</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>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">40,707</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">251,709</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">20,421</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">72,745</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">103,028</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">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">5,501</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 (PRC)</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">1,418</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">495,529</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: 12pt 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 first quarter of 2023, the Company contributed 9.8%, on average,
of gross payroll, totaling<BR>
R$ 75,505 (8.3% in the first quarter of 2022, totaling R$ 57,102).</P>

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

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt 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>Provision for 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>

<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>

<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><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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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 STYLE="vertical-align: bottom">
    <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 STYLE="vertical-align: bottom">
    <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%">4,384</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%">(56,305)</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%">(51,921)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <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">10,124</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">48,200</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">58,324</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <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 obligatinos as of March 31, 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">(133,608)</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">(2,010,180)</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">(2,143,788)</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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; 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%">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; 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%">(Expenses) recognized in 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%">(2,935)</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%">(44,238)</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%">(47,173)</FONT></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; 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%">Payments made in 2022</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">9,501</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">43,975</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">53,476</P></TD></TR>
  <TR>
    <TD STYLE="white-space: nowrap; 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%">Pension plan obligations as of March 31, 2022</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">(123,034)</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">(2,192,325)</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">(2,315,359)</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: 12pt/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: 12pt/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: 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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>(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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 58%; padding-right: 5.4pt; padding-bottom: 1pt; padding-left: 5.4pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="width: 21%; 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 March</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: 21%; 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 March</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></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="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%">2,935</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="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%">44,238</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%">6,603</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%">5,878</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">84</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">58</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%">58,608</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%">53,109</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%">(764)</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%">(771)</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%">(24,622)</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%">(20,791)</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">1,441</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">1,245</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">34,663</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">32,792</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 March 31, 2023, and December 31, 2022, were R$ 604,532 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: 12pt/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 March 31, 2023, and December 31, 2022, the authorized,
subscribed, and paid-in capital, totaling<BR>
R$ 15,000,000, was composed of 683,509,869 registered, book-entry common shares with no par value, 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: 12pt Times New Roman, Times, 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: center; border-bottom: Black 0.5pt solid"><B>March 31, 2023</B></P></TD>
    <TD COLSPAN="2" STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 9%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; width: 9%; padding-left: 2.85pt">
    <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 2.85pt 2.4pt; white-space: nowrap; 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 2.85pt 2.4pt; white-space: nowrap; 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 2.85pt 2.4pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">343,506,664</FONT></TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; 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 2.85pt 2.4pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"></FONT></TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"></FONT></TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; text-align: right">&nbsp;</TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; 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 2.85pt 2.4pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">257,305,517</FONT></TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; vertical-align: bottom; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">37.6</FONT></TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">257,339,417</FONT></TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; 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: 2.85pt; white-space: nowrap; vertical-align: bottom; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 4.8pt 0 2.4pt; text-align: right; border-bottom: Black 0.5pt solid">82,697,688</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; vertical-align: bottom; padding-left: 2.85pt">
    <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>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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 2.85pt 2.4pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"></FONT></TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt"></FONT></TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; text-align: right">&nbsp;</TD>
    <TD STYLE="padding: 4.8pt 2.85pt 2.4pt; white-space: nowrap; 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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 12pt/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 March 31, 2023, the common shares
traded in Brazil were held by 33,511 shareholders. It includes six shares held by Cia Paulista de Parcerias &ndash; CPP, a company controlled
by the S&atilde;o Paulo State.</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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>

<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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&rsquo; Meeting of April 28, 2023,
approved the distribution of dividends as interest on capital totaling R$ 741,301, corresponding to minimum mandatory dividends and R$
130,857 as supplementary minimum dividends, totaling R$ 872,158, to be 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/105% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 64%; padding-bottom: 2pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 18%; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 18%; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2022</B></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>
    <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">Profit attributable to the Company&rsquo;s owners</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">747,212</FONT></TD>
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">975,539</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">Weighted average number of common shares issued</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <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; 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="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">Basic and diluted earnings per share (reais per share)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">1.09320</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">1.42725</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/105% Georgia, Times, Serif; margin: 0; text-align: justify">&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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, 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>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: 12pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2023</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 41%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; width: 21%; padding-left: 2.85pt">
    <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: 2.85pt; width: 18%; padding-left: 2.85pt">
    <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: 2.85pt; width: 20%; padding-left: 2.85pt">
    <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="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross operating revenue </FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4,909,274</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">1,179,534</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6,088,808</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(390,439)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(390,439)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">4,518,835</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,179,534</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">5,698,369</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 9pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Costs, selling, general, and administrative expenses</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(3,173,849)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(1,153,015)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(4,326,864)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,344,986</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">26,519</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,371,505</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 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"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">14,634</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 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"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">6,334</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 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-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(259,528)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 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-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,132,945</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(657,145)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-&nbsp;&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(657,145)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>


<!-- Field: Page; Sequence: 72 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 12pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2022</B></P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 41%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; width: 21%; padding-left: 2.85pt">
    <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: 2.85pt; width: 18%; padding-left: 2.85pt">
    <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: 2.85pt; width: 20%; padding-left: 2.85pt">
    <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="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Gross operating revenue</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">4,298,220</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">888,206</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">5,186,426</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(316,036)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(316,036)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">3,982,184</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">888,206</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">4,870,390</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; font-size: 9pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">Costs, selling, general, and administrative expenses</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(2,876,938)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(867,521)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(3,744,459)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,105,246</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">20,685</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,125,931</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 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"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">2,564</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 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"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">5,583</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 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-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">340,124</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 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-left: 2.85pt">
    <P STYLE="font: 8pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">1,474,202</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(589,746)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">-</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 8pt">(589,746)</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 0 12pt 28.35pt; text-align: justify; text-indent: -28.35pt">&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>


<!-- Field: Page; Sequence: 73 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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>

<P STYLE="font: 12pt/110% Times New Roman, 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>26</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Operating revenue</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% 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>Revenue from sanitation services:</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: 12pt Times New Roman, Times, 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; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; width: 24%; padding-left: 2.85pt">
<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>January to March </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: 2.85pt; white-space: nowrap; width: 24%; padding-left: 2.85pt">
<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>January to March </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="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: justify; 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="white-space: nowrap; 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="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%">Metropolitan Region of S&atilde;o Paulo</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: 9pt; line-height: 110%">3,475,670</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: 9pt; line-height: 110%">3,048,853</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%">Regional Systems </FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,433,604</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">1,249,367</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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,909,274</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,298,220</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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>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: 12pt Times New Roman, Times, 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: 2.85pt; width: 24%; padding-left: 2.85pt">
<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>January to March </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 24%; padding-left: 2.85pt">
<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>January to March </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>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="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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">4,909,274</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">4,298,220</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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">1,179,534</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">888,206</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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(370,298)</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">(297,585)</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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(20,141)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(18,451)</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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">5,698,369</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">4,870,390</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$&nbsp;24,019 from the TRCF
charged from customers from January to March 2023 (R$&nbsp;20,961 from January to March 2022), 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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 62%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 19%; padding-left: 2.85pt">
<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>January to March </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="padding-right: 2.85pt; width: 19%; padding-left: 2.85pt">
<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>January to March </B></P>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: center"><B>2022</B></P>
</DIV></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">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></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">&#9;Salaries, payroll charges, and benefits</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">(583,855)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(508,873)</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">&#9;Pension plan obligations </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">(1,656)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(7,057)</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">&#9;Construction costs (Note 25)</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">(1,153,015)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(867,521)</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">&#9;General supplies</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">(85,831)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(66,490)</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">&#9;Treatment supplies</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">(164,899)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(147,308)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(435,484)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(365,892)</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">&#9;Electricity</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">(395,026)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(411,084)</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">&#9;General 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">(227,169)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(198,626)</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">&#9;Depreciation and amortization</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(606,788)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(543,535)</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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(3,653,723)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(3,116,386)</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">&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></TR>
  </TABLE>

<!-- Field: Page; Sequence: 74 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 62%; 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>
    <TD STYLE="white-space: nowrap; width: 19%; padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right">&nbsp;</TD>
    <TD STYLE="width: 19%; 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-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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(70,517)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(67,909)</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">&#9;Pension plan obligations</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">(185)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(959)</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">&#9;General supplies</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">(1,067)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(1,130)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(109,177)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(84,363)</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">&#9;Electricity</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">(191)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(414)</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">&#9;General 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">(27,626)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(25,127)</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">&#9;Depreciation and amortization</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">(16,894)</P></TD>
    <TD>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(16,685)</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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(225,657)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(196,587)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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: 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="white-space: nowrap; 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">Bad debt expense, net of recoveries (Note 9 (c))</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">(162,805)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(177,694)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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: 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="white-space: nowrap; 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>
    <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></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">&#9;Salaries, payroll charges, and benefits</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">(55,142)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(58,521)</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">&#9;Pension plan obligations</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">(32,822)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(24,776)</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">&#9;General supplies</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">(601)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(4,299)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(80,267)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(61,833)</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">&#9;Electricity</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">(583)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(445)</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">&#9;General 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">(60,011)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(55,387)</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">&#9;Depreciation and amortization</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">(33,463)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(29,526)</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">&#9;Tax expenses</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">(21,790)</P></TD>
    <TD>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(19,005)</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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(284,679)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(253,792)</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">&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></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">Operating costs and expenses</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></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">&#9;Salaries, payroll charges, and benefits</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">(709,514)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(635,303)</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">&#9;Pension plan obligations (Note 21 (v))</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">(34,663)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(32,792)</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">&#9;Construction costs (Note 25)</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">(1,153,015)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(867,521)</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">&#9;General supplies</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">(87,499)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(71,919)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(164,899)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(147,308)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(624,928)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(512,088)</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">&#9;Electricity</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">(395,800)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(411,943)</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">&#9;General 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">(314,806)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(279,140)</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">&#9;Depreciation and amortization</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">(657,145)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">589,746</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">&#9;Tax 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">(21,790)</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">(19,005)</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; text-indent: -2.85pt"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">&#9;Bad debt expense, net of recoveries (Note 9 (c)) </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">(162,805)</P></TD>
    <TD>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(177,694)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding-right: 2.85pt; padding-bottom: 2pt; padding-left: 2.85pt; text-align: justify">&nbsp;</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">(4,326,864)</P></TD>
    <TD>
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 2pt; text-align: right; border-bottom: Black 1.5pt double">(3,744,459)</P></TD></TR>
  </TABLE>

<!-- 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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

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

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

<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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 70%; padding-top: 2.4pt; padding-right: 2.85pt; padding-bottom: 2.4pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; width: 15%; padding-left: 2.85pt">
<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>January to March </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: center"><B>2023</B></P>
</DIV></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 15%; padding-left: 2.85pt">
<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>January to March </B></P>
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: center"><B>2022</B></P>
</DIV></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial expenses</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 10pt/110% Verdana, Helvetica, Sans-Serif; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify"><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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(273,106)</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(189,553)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(21,049)</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(8,556)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(101,732)</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(91,244)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(70,509)</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(70,718)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(50,463)</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(48,365)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(45,612)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">(44,582)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; font: 9pt/110% Univers, Helvetica, Sans-Serif; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif">Total financial expenses</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(562,471)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(453,018)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial income</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">60,314</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">59,684</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">103,217</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">79,662</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">66,560</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">70,684</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; 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: 2.4pt 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(10,788)</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(9,767)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">17</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">13</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">219,320</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">200,276</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial income (expenses), net of exchange variation</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(343,151)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(252,742)</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">83,825</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">594,030</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">

    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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 2.85pt; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(201)</FONT></TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">(1,263)</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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: 2.85pt; padding-left: 2.85pt">
    <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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 0.5pt solid">99</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; 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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">83,623</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">592,866</P></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; text-align: right; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding: 2.4pt 2.85pt; white-space: nowrap; text-align: right; line-height: 110%">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; padding: 2.4pt 2.85pt 2.4pt 7.1pt; text-align: justify; line-height: 110%"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt; line-height: 110%">Financial income (expenses), net</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">(259,528)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 2.4pt 0; text-align: right; border-bottom: Black 1.5pt double">340,124</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>


<!-- Field: Page; Sequence: 76 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, 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>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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 52%; padding-bottom: 1pt; text-align: center">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 24%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; width: 24%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    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: 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: 2.85pt; padding-bottom: 1pt; padding-left: 2.85pt; text-align: right"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 9pt">20,352</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">10,308</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: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.75pt solid">(5,718)</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.75pt solid">(7,744)</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: 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 (expenses), net</FONT></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">14,634</P></TD>
    <TD STYLE="padding-right: 2.85pt; white-space: nowrap; padding-left: 2.85pt">
    <P STYLE="font: 9pt Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 2.25pt double">2,564</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 derecognition
of concessions 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 March 31, 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: 12pt Times New Roman, Times, 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">1,305,561</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">1,310,451</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">278,540</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">643,643</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">3,538,195</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">3,426,343</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">2,992,419</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">1,947,122</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">140,005</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">8,505,889</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">4,731,904</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">4,302,870</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">2,225,662</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">783,648</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">12,044,084</P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Georgia, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 77 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, 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>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: 12pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="white-space: nowrap; width: 66%; padding-bottom: 1pt; text-align: center; line-height: 110%">&nbsp;</TD>
    <TD STYLE="padding-right: 2.85pt; width: 17%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    2023</B></P></TD>
    <TD STYLE="padding-right: 2.85pt; width: 17%; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: center; border-bottom: Black 0.5pt solid"><B>January to March
    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: 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="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="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: 9pt; line-height: 110%">1,204,867</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: 9pt; line-height: 110%">958,070</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="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: 9pt; line-height: 110%">322</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: 9pt; line-height: 110%">14,100</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="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="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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(634,857)</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">(320,510)</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: 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="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="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: 9pt; line-height: 110%">570,332</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: 9pt; line-height: 110%">651,660</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="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="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="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="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="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: 9pt; line-height: 110%">167,802</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: 9pt; line-height: 110%">120,324</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="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: 9pt; line-height: 110%">240,833</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: 9pt; line-height: 110%">233,889</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="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: 9pt; line-height: 110%">199,383</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: 9pt; line-height: 110%">(63,118)</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="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: 9pt; line-height: 110%">320</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: 9pt; line-height: 110%">8,730</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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">26,519</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 0.5pt solid">20,685</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: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">634,857</P></TD>
    <TD STYLE="padding-right: 2.85pt; padding-left: 2.85pt">
    <P STYLE="font: 9pt/110% Georgia, Times, Serif; margin: 0 0 1pt; text-align: right; border-bottom: Black 1.5pt double">320,510</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 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>32</B></FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Events after the reporting period</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: 12pt/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: Symbol; font-size: 10pt">&#183;</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Result of the Extraordinary Tariff
Review and Annual Tariff Adjustment</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 0 6pt; text-align: justify">As of April 6, 2023, further to the Material Facts
disclosed on December 21, 2022 and February 16, 2023, SABESP informed its shareholders and the market in general that ARSESP disclosed
Resolution 1,394/2023, referring to the Extraordinary Tariff Review, and Resolution 1,395/2023, which provides for the new tariff amounts,
authorizing the Company to apply the total tariff adjustment of 9.5609%, regarding the tariffs in effect, resulting from:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 1pt; background-color: white"><TR STYLE="vertical-align: top">
<TD STYLE="width: 17.85pt"></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">IPCA (February 2022 to February 2023)
of 5,5964%;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 1pt; background-color: white"><TR STYLE="vertical-align: top">
<TD STYLE="width: 17.85pt"></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">Efficiency factor (X Factor) of 0.2142%;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 1pt; background-color: white"><TR STYLE="vertical-align: top">
<TD STYLE="width: 17.85pt"></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">General Quality Index (GQI 2023) to
be discounted, of 0.1280%;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 1pt; background-color: white"><TR STYLE="vertical-align: top">
<TD STYLE="width: 17.85pt"></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">Result of the Extraordinary Tariff Review,
of 5.5532%;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/110% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 1pt; background-color: white"><TR STYLE="vertical-align: top">
<TD STYLE="width: 17.85pt"></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">Compensatory adjustment (referring to
2021), of 1.4040%, to be discounted.</FONT></TD></TR></TABLE>


<!-- Field: Page; Sequence: 78 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B>Notes to the Financial Statements</B></P><P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"><B></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: 12pt/110% Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 12pt/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: Symbol; font-size: 10pt">&#183;</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Contract with the International Finance
Corporation - IFC</B></FONT></TD></TR></TABLE>

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

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">On April 7, 2023, SABESP informed its shareholders and
the market in general about the ratification of the unenforceability of the bidding process for the contracting of specialized technical
services to provide support and consultancy services to the State regarding the studies on the Privatization of SABESP.</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">Accordingly, the contract with the International Finance
Corporation - IFC was executed on April 10, 2023. IFC is an agency linked to the World Bank that will act as an advisor to this process.</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% 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: Symbol; font-size: 10pt">&#183;</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Georgia, Times, Serif; font-size: 10pt"><B>Separation Incentive Program - PDI</B></FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/13.2pt Georgia, Times, Serif; margin: 0; text-align: justify; background-color: white; color: #242424"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/110% Georgia, Times, Serif; margin: 0; text-align: justify">On May 11, 2023, further to the Company&rsquo;s restructuring
and in the context of the new strategic guideline for efficiency and process simplification, the final approval stage for the implementation
of the Separation Incentive Program (PDI) was concluded. The Program will focus on preserving knowledge and ensuring the continuity of
the Company&rsquo;s activities, with adhesions occurring in June 2023 and a schedule of dismissals between July 2023 and June 2024. The
Company expects 2,000 employees to adhered to the Program.</P>


<!-- Field: Page; Sequence: 79; Options: NewSection -->
    <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%">&nbsp;</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 - 03/31/2023 - 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/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><B>Comments on the Company&rsquo;s Projections</B></P>

<P STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 12pt/110% Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 57.7pt; text-align: justify"><B>Comments on the Company&rsquo;s Projections</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 6pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0.1pt 0 6pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt/112% Arial, Helvetica, Sans-Serif; margin: 0 62.6pt 0 57.7pt; 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 with quarterly results shall not apply.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0.1pt 0 6pt">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0 0 0 57.7pt; text-align: justify">Projections are monitored every year and
disclosed in the Reference Form.</P>

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

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


<!-- Field: Page; Sequence: 80 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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 Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<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"><B>&nbsp;</B></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 4.55pt 0.9in 0 60.05pt; text-indent: 0in"><FONT STYLE="font-size: 11pt"><B>1.</B></FONT><B><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 7pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font-size: 11pt">CHANGES IN INTEREST HELD BY THE CONTROLLING SHAREHOLDER, BOARD MEMBERS, AND EXECUTIVE OFFICERS</FONT></B></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0.6pt 0 0 1pt"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 12pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top; background-color: silver">
    <TD COLSPAN="5" STYLE="border: black 1pt solid">
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 69.4pt 0 70.2pt; text-align: center"><B>CONSOLIDATED SHAREHOLDING POSITION
    OF CONTROLLING SHAREHOLDERS AND MANAGEMENT, AND OUTSTANDING SHARES</B></P>
    <P STYLE="font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 182.8pt 0 183.65pt; text-align: center"><B>Position as of 03/31/2023</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">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.55pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 55.1pt 0 55.95pt; text-align: center"><B>Shareholder</B></P></TD>
    <TD STYLE="width: 21%; border-bottom: black 1pt solid; font: 11pt/12.7pt Arial, Helvetica, Sans-Serif; border-right: black 1pt solid; padding-top: 1.75pt; padding-right: 9.7pt; padding-left: 10.65pt; text-align: center"><B>Number of Common Shares (units)</B></TD>
    <TD STYLE="width: 9%; border-bottom: black 1pt solid; border-right: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.55pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 0.9pt; text-align: center"><B>%</B></P></TD>
    <TD STYLE="width: 23%; border-bottom: black 1pt solid; border-right: black 1pt solid">
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 12.2pt 0 13.15pt; text-align: center"><B>Total Number of Shares</B></P>
    <P STYLE="font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 12.2pt 0 12.95pt; text-align: center"><B>(units)</B></P></TD>
    <TD STYLE="width: 12%; border-bottom: black 1pt solid; border-right: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.55pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 0.8pt; text-align: center"><B>%</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.15pt; padding-left: 3.45pt; text-align: right"><B>Controlling Shareholder</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-left: 3.45pt; text-align: right">Treasury Department</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.55pt; text-align: right">343,506,664</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.6pt; text-align: right">50.3%</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.6pt; text-align: right">343,506,664</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.4pt; text-align: right">50.3%</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 Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 3.45pt; text-align: right">Companhia Paulista de Parcerias</P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 3.45pt; text-align: right">- CPP</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 2.7pt 0 0; text-align: right">6</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 2.6pt 0 0; text-align: right">0%</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 2.7pt 0 0; text-align: right">6</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 2.4pt 0 0; text-align: right">0%</P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.35pt; padding-left: 3.45pt; text-align: right"><B>Management</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-left: 3.45pt; text-align: right">Board of Directors</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.5pt; text-align: right">100</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.5pt; text-align: right">0%</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.55pt; text-align: right">100</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.35pt; text-align: right">0%</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-left: 3.45pt; text-align: right">Executive Board</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.7pt; text-align: right">1,300</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.6pt; text-align: right">0%</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.7pt; text-align: right">1,300</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.4pt; text-align: right">0%</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-left: 3.45pt; text-align: right"><B>Fiscal Council</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.2pt; padding-right: 2.7pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.2pt; padding-right: 2.7pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.2pt; padding-right: 2.7pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.2pt; padding-right: 2.45pt; text-align: right">-</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.35pt; padding-left: 3.45pt; text-align: right"><B>Treasury Shares</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.65pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.65pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.7pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.45pt; text-align: right">-</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.35pt; padding-left: 3.45pt; text-align: right"><B>Other Shareholders</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-left: 3.45pt; text-align: right"><B>Total</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.6pt; text-align: right"><B>343,508,070</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.55pt; text-align: right"><B>50.3%</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.6pt; text-align: right"><B>343,508,070</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.35pt; text-align: right"><B>50.3%</B></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-left: 3.45pt; text-align: right">Outstanding Shares</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.65pt; text-align: right">340,001,799</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.7pt; text-align: right">49.7%</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.55pt; text-align: right">340,001,799</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.35pt; text-align: right">49.7%</TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


<!-- Field: Page; Sequence: 81 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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 Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 12pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top; background-color: silver">
    <TD COLSPAN="5" STYLE="border: black 1pt solid">
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 69.4pt 0 70.2pt; text-align: center"><B>CONSOLIDATED SHAREHOLDING POSITION
    OF CONTROLLING SHAREHOLDERS AND MANAGEMENT, AND OUTSTANDING SHARES</B></P>
    <P STYLE="font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 182.8pt 0 183.65pt; text-align: center"><B>Position as of 03/31/2022</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">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.55pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 55.1pt 0 55.95pt; text-align: center"><B>Shareholder</B></P></TD>
    <TD STYLE="width: 21%; border-bottom: black 1pt solid; font: 11pt/12.7pt Arial, Helvetica, Sans-Serif; border-right: black 1pt solid; padding-top: 1.75pt; padding-right: 9.7pt; padding-left: 10.65pt; text-align: center"><B>Number of Common Shares (units)</B></TD>
    <TD STYLE="width: 9%; border-bottom: black 1pt solid; border-right: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.55pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 0.9pt; text-align: center"><B>%</B></P></TD>
    <TD STYLE="width: 23%; border-bottom: black 1pt solid; border-right: black 1pt solid">
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 12.2pt 0 13.15pt; text-align: center"><B>Total Number of Shares</B></P>
    <P STYLE="font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 12.2pt 0 12.95pt; text-align: center"><B>(units)</B></P></TD>
    <TD STYLE="width: 12%; border-bottom: black 1pt solid; border-right: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.55pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 0.8pt; text-align: center"><B>%</B></P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.15pt; padding-left: 3.45pt; text-align: right"><B>Controlling Shareholder</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-left: 3.45pt; text-align: right">Treasury Department</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.45pt; text-align: right">343,506,664</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.5pt; text-align: right">50.3%</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.55pt; text-align: right">343,506,664</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.4pt; text-align: right">50.3%</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 Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 3.45pt; text-align: right">Companhia Paulista de Parcerias</P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 3.45pt; text-align: right">- CPP</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 2.7pt 0 0; text-align: right">6</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 2.6pt 0 0; text-align: right">0%</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 2.7pt 0 0; text-align: right">6</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 2.4pt 0 0; text-align: right">0%</P></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.35pt; padding-left: 3.45pt; text-align: right"><B>Management</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-left: 3.45pt; text-align: right">Board of Directors</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.65pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.65pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.65pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.4pt; text-align: right">-</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-left: 3.45pt; text-align: right">Executive Board</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.55pt; text-align: right">200</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.6pt; text-align: right">0.0%</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.6pt; text-align: right">200</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.35pt; text-align: right">0.0%</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-left: 3.45pt; text-align: right"><B>Fiscal Council</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.2pt; padding-right: 2.7pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.2pt; padding-right: 2.7pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.2pt; padding-right: 2.7pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.2pt; padding-right: 2.45pt; text-align: right">-</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.35pt; padding-left: 3.45pt; text-align: right"><B>Treasury Shares</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.65pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.65pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.7pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.45pt; text-align: right">-</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.35pt; padding-left: 3.45pt; text-align: right"><B>Other Shareholders</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 5.45pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 5.45pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 5.45pt; text-align: right">-</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 5.2pt; text-align: right">-</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-left: 3.45pt; text-align: right"><B>Total</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.6pt; text-align: right"><B>343,506,870</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.55pt; text-align: right"><B>50.3%</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.6pt; text-align: right"><B>343,506,870</B></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 4.3pt; padding-right: 2.35pt; text-align: right"><B>50.3%</B></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&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; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-left: 3.45pt; text-align: right">Outstanding Shares</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.6pt; text-align: right">340,002,999</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.6pt; text-align: right">49.7%</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.6pt; text-align: right">340,002,999</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.7pt Arial, Helvetica, Sans-Serif; padding-top: 4.25pt; padding-right: 2.4pt; text-align: right">49.7%</TD></TR>
  </TABLE>
<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 4.5pt 0 0 60.05pt"><B>2. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;SHAREHOLDING
POSITION</B></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 12pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top; background-color: silver">
    <TD COLSPAN="5" STYLE="border: black 1pt solid; font: 11pt/12.7pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; padding-left: 3.45pt; text-align: right"><B>SHAREHOLDING POSITION OF HOLDERS OF MORE THAN 5% OF EACH TYPE AND CLASS OF COMPANY SHARES, UP TO THE INDIVIDUAL LEVEL</B></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 Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 3.45pt; text-align: right"><B>Company:</B></P>
    <P STYLE="font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 3.45pt; text-align: right"><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; font: 11pt/12.7pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; padding-right: 14pt; padding-left: 57.9pt; text-align: right; text-indent: -25.6pt"><B>Position as of 03/31/2023 (number of shares)</B></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 11pt Arial, Helvetica, Sans-Serif; padding-top: 1.75pt; text-align: right">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 6.95pt; padding-left: 29.05pt; text-align: right"><B>Common Shares</B></TD>
    <TD COLSPAN="2" STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 6.95pt; padding-right: 70.8pt; padding-left: 71.8pt; text-align: center"><B>Total</B></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; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; padding-top: 7.15pt; padding-left: 3.45pt; text-align: right"><B>Shareholder</B></TD>
    <TD STYLE="width: 21%; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; border-right: black 1pt solid; padding-top: 7.15pt; padding-left: 19.9pt; text-align: right"><B>Number of Shares</B></TD>
    <TD STYLE="width: 11%; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; border-right: black 1pt solid; padding-top: 7.15pt; padding-left: 0.9pt; text-align: center"><B>%</B></TD>
    <TD STYLE="width: 23%; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; border-right: black 1pt solid; padding-top: 7.15pt; padding-left: 22.35pt; text-align: right"><B>Number of Shares</B></TD>
    <TD STYLE="width: 12%; border-bottom: black 1pt solid; font: 11pt/11.65pt Arial, Helvetica, Sans-Serif; border-right: black 1pt solid; padding-top: 7.15pt; padding-left: 0.75pt; text-align: center"><B>%</B></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: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.8pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 3.45pt; text-align: right">Treasury Department</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.8pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 36.7pt; text-align: right">343,506,664</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.8pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 22.4pt; text-align: right">50.3</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.8pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 0 0 41.65pt; text-align: right">343,506,664</P></TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid">
    <P STYLE="font: 10.5pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0; text-align: right"><B>&nbsp;</B></P>
    <P STYLE="font: 11pt/11.8pt Arial, Helvetica, Sans-Serif; margin: 1.75pt 2.35pt 0 0; text-align: right">50.3</P></TD></TR>
  </TABLE>
<P STYLE="font: bold 12pt Arial, Helvetica, Sans-Serif; margin: 4.6pt 0 0">&nbsp;</P>


<!-- Field: Page; Sequence: 82 -->
    <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%">&nbsp;</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 - 03/31/2023 - 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 Arial, Helvetica, Sans-Serif; margin: 4.6pt 0 0">Reports and Statements / Unqualified Report on Special Review</P>

<P STYLE="font: bold 9pt Arial, Helvetica, Sans-Serif; margin: 4.6pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/110% 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: 9pt/110% Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 9pt/110% Arial, Helvetica, Sans-Serif; margin: 0"><B>Report on Review of Interim Financial Information </B></P>

<P STYLE="font: 9pt/110% Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 9pt/110% Arial, Helvetica, Sans-Serif; margin: 0">To the Shareholders, Directors and Management of</P>

<P STYLE="font: 9pt/110% Arial, Helvetica, Sans-Serif; margin: 0">Companhia de Saneamento B&aacute;sico do Estado de S&atilde;o Paulo
&ndash; SABESP</P>

<P STYLE="font: 9pt/110% Arial, Helvetica, Sans-Serif; margin: 0">S&atilde;o Paulo &ndash; SP</P>

<P STYLE="font: 9pt/110% Arial, Helvetica, Sans-Serif; margin: 0 329.75pt 0 0">&nbsp;</P>

<P STYLE="color: #4F2D7F; font: 12pt/12pt Arial, Helvetica, Sans-Serif; margin: 6pt 0; text-align: justify"><FONT STYLE="font-weight: normal">Introduction</FONT></P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 6pt 0; text-align: justify">We have reviewed the accompanying interim financial
information of Companhia de Saneamento B&aacute;sico do Estado de S&atilde;o Paulo (&ldquo;Company&rdquo;), included in the Interim Financial
Information Form (ITR) for the quarter ended March 31, 2023, which comprises the Statement of financial position as of March 31, 2023
and the related income statement, statement of comprehensive income, the statements of changes in equity and cash flows for the three
months then ended, including a summary of significant accounting policies and other explanatory notes.</P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 6pt 0; text-align: justify">Management is responsible for the preparation
of the interim financial information in accordance with Technical Pronouncement NBC TG - 21- Interim Financial Reporting and IAS 34 -
Interim Financial Reporting, issued by the International Accounting Standards Board (IASB), as well as for the presentation of such information
in accordance with the standards issued by the Brazilian Securities and Exchange Commission (CVM) applicable to the preparation of Interim
Financial Information (ITR). Our responsibility is to express a conclusion on this interim financial information based on our review.</P>

<P STYLE="color: #4F2D7F; font: 12pt/12pt Arial, Helvetica, Sans-Serif; margin: 16pt 0 6pt; text-align: justify"><FONT STYLE="font-weight: normal">Scope
of Review</FONT></P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 6pt 0; text-align: justify">We conducted our review in accordance with
Brazilian and international standards on review of interim financial information (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 of making inquiries,
primarily of persons responsible for financial and accounting matters, and applying analytical and other review procedures. A review is
substantially less in scope than an audit conducted in accordance with the standards on auditing and consequently does not enable us to
obtain assurance that we would become aware of all significant matters that might be identified in an audit. Accordingly, we do not express
an audit opinion.</P>

<P STYLE="color: #4F2D7F; font: 12pt/12pt Arial, Helvetica, Sans-Serif; margin: 16pt 0 6pt; text-align: justify"><FONT STYLE="font-weight: normal">Conclusion
on the interim financial information</FONT></P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 6pt 0; text-align: justify"><FONT STYLE="font-weight: normal">Based on
our review, nothing has come to our attention that causes us to believe that the accompanying interim financial information included in
the Interim Financial Information Form (ITR) referred to above is not prepared, in all material respects, in accordance with NBC TG &ndash;
21 and IAS 34 applicable to the preparation of interim financial information and presented in accordance with the standards issued by
the Brazilian Securities and Exchange Commission (CVM).</FONT></P>

<P STYLE="color: #4F2D7F; font: 12pt/12pt Arial, Helvetica, Sans-Serif; margin: 16pt 0 6pt; text-align: justify"><FONT STYLE="font-weight: normal">Other
matters</FONT></P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 6pt 0; text-align: justify; color: #4F2D7F"><B>Statement of value added</B></P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 6pt 0; text-align: justify">The quarterly information referred to above
includes statements of value added for the period of three months ended March 31, 2023, prepared under the responsibility of the Company's
management and presented as supplementary information for the purposes of IAS 34. These statements were submitted to the same review procedures
in conjunction with the review of the Company's interim financial information in the order to conclude they are reconciliated to the interim
financial information and to the accounting records, as applicable, and whether the structure and content are in accordance with the criteria
established in the NBC TG 09 - Statement of Value Added. Based on our review, nothing has come to our attention that causes us to believe
that the accompanying statements of value added were not prepared, in all material respects, in accordance with the interim financial
information taken as a whole.</P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 0 16pt">S&atilde;o Paulo, May 11, 2023</P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 0">&Eacute;lica Daniela da Silva Martins</P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 0 0 16pt">Accountant CRC 1SP-223.766/O-0</P>

<P STYLE="font: 9pt/12pt Arial, Helvetica, Sans-Serif; margin: 0">Grant Thornton Auditores Independentes Ltda.</P>

<P STYLE="font: 9pt/110% Arial, Helvetica, Sans-Serif; margin: 0 329.75pt 0 0">CRC 2SP-025.583/O-1</P>

<P STYLE="font: 9pt/110% Arial, Helvetica, Sans-Serif; margin: 0 329.75pt 0 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%">&nbsp;</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 - 03/31/2023 - 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 Arial, Helvetica, Sans-Serif; margin: 4.6pt 0 0">Reports and Statements / Executive Officers&rsquo; Statement
on the Financial Statements</P>

<P STYLE="font: bold 12pt Arial, Helvetica, Sans-Serif; margin: 4.6pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/192% Arial, Helvetica, Sans-Serif; margin: 0 290.15pt 0 0">Executive Officers&rsquo; Statement on the Quarterly Information
STATEMENT</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0.3pt 6.5pt 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 25, item
VI of CVM Instruction 480, of December 7, 2009, that:</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/192% Arial, Helvetica, Sans-Serif; margin: 0 111.15pt 0 0; text-align: justify">They reviewed, discussed, and agreed
with the quarterly information for the period ended March 31, 2023. S&atilde;o Paulo, May 11, 2023.</P>

<P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0.05pt 0 0; text-align: justify">Companhia de Saneamento B&aacute;sico do Estado
de S&atilde;o Paulo - SABESP</P>

<P STYLE="font: 8.5pt Arial, Helvetica, Sans-Serif; margin: 0.15pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0 380.7pt 0 0">Andr&eacute; Gustavo Salcedo Teixeira Mendes CEO</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 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: 8.5pt Arial, Helvetica, Sans-Serif; margin: 0.15pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0 329.75pt 0 0">Sabrina de Menezes Correa Furstenau Sabino</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0 329.75pt 0 0">People and Corporate Management Officer</P>

<P STYLE="font: 8.5pt Arial, Helvetica, Sans-Serif; margin: 0.15pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0.05pt 385.05pt 0 0">Paula Alessandra Bonin Costa Violante Engineering and
Innovation Officer</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0.45pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Roberval Tavares de Souza</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Operations and Maintenance Officer</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 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>


<!-- 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%">&nbsp;</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 - 03/31/2023 - 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: 9pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0 0 10pt"><B>Reports and Statements / Executive Officers&rsquo; Statement on
the Report of Independent Registered Public Accounting Firm</B></P>

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

<P STYLE="font: 9pt/192% Arial, Helvetica, Sans-Serif; margin: 8.4pt 235.85pt 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 6.5pt 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 25, item
V of CVM Instruction 480, of December 7, 2009:</P>

<P STYLE="font: 8.5pt Arial, Helvetica, Sans-Serif; margin: 0.1pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0 10.3pt 0 0">They reviewed, discussed, and agreed with the Report of Independent
Registered Public Accounting Firm on the quarterly information for the period ended March 31, 2023.</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt Arial, Helvetica, Sans-Serif; margin: 0">S&atilde;o Paulo, May 11, 2023.</P>

<P STYLE="font: 9pt/20pt Arial, Helvetica, Sans-Serif; margin: 0.05pt 235.85pt 0 0">Companhia de Saneamento B&aacute;sico do Estado de
S&atilde;o Paulo - SABESP Andr&eacute; Gustavo Salcedo Teixeira Mendes</P>

<P STYLE="font: 9pt/10pt Arial, Helvetica, Sans-Serif; margin: 0">CEO</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0.45pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 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: 8.5pt Arial, Helvetica, Sans-Serif; margin: 0.15pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0 329.75pt 0 0">Sabrina de Menezes Correa Furstenau Sabino</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0 329.75pt 0 0">People and Corporate Management Officer</P>

<P STYLE="font: 8.5pt Arial, Helvetica, Sans-Serif; margin: 0.15pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/96% Arial, Helvetica, Sans-Serif; margin: 0 385.05pt 0 0">Paula Alessandra Bonin Costa Violante Engineering and Innovation
Officer</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0.5pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Roberval Tavares de Souza</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0">Operations and Maintenance Officer</P>

<P STYLE="font: 8pt Arial, Helvetica, Sans-Serif; margin: 0.45pt 0 0">&nbsp;</P>

<P STYLE="font: 9pt/10.2pt Arial, Helvetica, Sans-Serif; margin: 0.05pt 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 Arial, Helvetica, Sans-Serif; margin: 0 0 10pt">&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>

<!-- Field: Page; Sequence: 85; Options: NewSection -->
    <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%">&nbsp;</TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->



<P></P>

<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;May 26, 2023</FONT></DIV>

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

<DIV align=center>

<TABLE style="WIDTH: 70%" cellSpacing=0 cellPadding=0>



<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>

<HR align=left color=#000000 SIZE=2 noShade>

</DIV>

<P></P>

</BODY>

</HTML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
