<SEC-DOCUMENT>0001292814-21-002320.txt : 20210517
<SEC-HEADER>0001292814-21-002320.hdr.sgml : 20210517
<ACCEPTANCE-DATETIME>20210517093430
ACCESSION NUMBER:		0001292814-21-002320
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210630
FILED AS OF DATE:		20210517
DATE AS OF CHANGE:		20210517

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:		21928065

	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>sbs20210514_6k.htm
<DESCRIPTION>FORM 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 STYLE="text-align: center"><FONT color=#000000 size=2 face="Times New Roman"><B>For&nbsp;May, 2021</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; 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: right; width: 100%"></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 STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 6pt; text-align: center"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>

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

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>BYLAWS</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER I</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>NAME, HEADQUARTERS, PURPOSE AND TERM</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 1 </B>- The joint stock company
called Companhia de Saneamento B&aacute;sico do Estado de S&atilde;o Paulo &ndash; SABESP is an constituent part of the indirect management
of the State of S&atilde;o Paulo, being ruled by these Bylaws, by Federal Laws 6,404, of December 15, 1976, and 13,303, of June 30, 2016,
and other applicable legal provisions.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 21.3pt; text-align: justify"><B>Paragraph 1 &ndash; </B>With
the company&rsquo;s listing on the <I>Novo Mercado</I> special segment of B3 S.A. &ndash; Brasil, Bolsa, Balc&atilde;o (&ldquo;B3&rdquo;),
the Company, its shareholders, including the controlling shareholder, managers and members of the fiscal committee are subject to the
provisions of the <I>Novo Mercado</I> Listing Rules of B3 (&ldquo;<I>Novo Mercado</I> Rules&rdquo;).</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 2 - </B>The Company shall
exist for an indefinite term.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 3 - </B>The Company&rsquo;s
headquarters are located at Rua Costa Carvalho, 300, in the capital of the state of S&atilde;o Paulo.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 4 &ndash; </B>Whenever
necessary to achieve the corporate purpose and in view of its operation area, the Company may open, institute, maintain, transfer or close
down branches, facilities, agencies, offices, main branches, representation or yet designate representatives, in respect to the legal
provisions and regulations.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 2 &ndash; </B>The Company&rsquo;s
main corporate purpose is to render basic sanitation services in view of its universal service in the state of S&atilde;o Paulo, without
losing long-term financial sustainability, comprising the following activities: water supply, sanitary sewage, drainage and handling of
urban rain water, urban cleaning and handling of solid waste, in addition to other related activities, including the planning, operation
and maintenance of production systems, storage, preservation and trading of energy, to itself or third parties and trading of services,
products, benefits and rights that, direct or indirectly, result from its assets, projects and activities, and it may also operate as
a subsidiary anywhere in the country or abroad providing the services mentioned above.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Sole Paragraph </B>&ndash; In order
to carry out the corporate purpose, the Company may constitute wholly-owned subsidiaries, have a stake in investment funds and enter into
a joint venture with, by any mean, other public or private corporations, including upon the acquisition of consortium or subscription
of a minority or majority installment of the capital stock.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER II</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CAPITAL STOCK AND SHARES</B></P>

<P STYLE="font: 10pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-size: 9pt"><B>ARTICLE 3
</B>&ndash;The capital stock is fifteen billion reais (R$15,000,000,000.00), fully </FONT>subscribed and <FONT STYLE="font-size: 9pt">subscribed
and paid-up, divided in six hundred and eighty-three million, five hundred and nine thousand, eight hundred and sixty-nine (683,509,869)
exclusively one-class common shares, all registered, book-entry and with no par value.</FONT></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 1 &ndash; </B>The issuance
of founder&rsquo;s shares and preferred shares is forbidden.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 21.3pt; text-align: justify"><B>Paragraph 2 &ndash; </B>The
Company may directly charge the shareholder the cost for the share transferring service, in view of the maximum limits established by
the legislation in force, as well as authorize the very collection per trustee in charge of the maintenance of book-entry shares.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 4 &ndash; </B>Each common share
is entitled to one vote at the Shareholders&rsquo; General Meeting&rsquo;s resolutions.</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->1<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER III</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>SHAREHOLDERS&rsquo; GENERAL MEETING</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 5 &ndash; </B>The Shareholders&rsquo;
General Meeting shall be called, instated and shall resolve, pursuant to the law, on all matters of the Company&rsquo;s interest.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 21.3pt; text-align: justify"><B>Paragraph 1 </B>&ndash; The
Shareholders&rsquo; General Meeting shall also be called by the Chairman of the Board of Directors or by the majority of acting board
members.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 2 </B>&ndash; The Shareholders&rsquo;
General Meeting shall be chaired by the Chairman of the Board of Directors or, in case of absence, by any other attending member; the
Chairman of the Board of Directors is responsible for appointing the member who shall replace him at presiding the Shareholders&rsquo;
General Meeting.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 21.3pt; text-align: justify"><B>Paragraph 3 &ndash; </B>The
chairman of the general meeting will choose, among the attendees, one or more secretaries, being allowed the use of own advisement in
the company.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 21.3pt; text-align: justify"><B>Paragraph 4 &ndash; </B>The
minutes of the general meeting shall be drawn up in the summary format, as provided for in article 130, paragraph 1, of the Federal Law
6,404/76.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 21.3pt; text-align: justify"><B>Paragraph 5 &ndash; </B>All
documents to be analyzed or discussed at the general meeting must be available to the shareholders at the Company&rsquo;s headquarters
and at B3, at least one (1) month before the meeting.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 6 </B>&ndash; The proof
of the conditions of shareholder may occur at any moment until the start of the Shareholders&rsquo; General Meeting, by means of the presentation
of the identity document, the receipt issued by the depositary financial institution of the book-entry shares informing the respective
number and, in the event of constitution of an attorney-in-fact, of the competent power of attorney with the notarized signature and granted
for less than one year.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER IV</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>MANAGEMENT OF THE COMPANY</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 0.25pt; text-align: justify"><B>ARTICLE 6 &ndash; </B>The Company
may be managed by the Board of Directors and by the executive board.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER V</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>BOARD OF DIRECTORS</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 0; text-align: justify"><B>ARTICLE 7 </B>&ndash; The board of
directors is the joint resolution committee responsible for the superior guidance of the company.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 0; text-align: justify"><B><U>Members, investiture and term
of office</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 0; text-align: justify"><B>ARTICLE 8 &ndash;</B> The Board of
Directors shall be composed of a minimum of seven (7) and maximum of eleven (11) members, elected and removed from office by the General
Meeting, all with a two (2)-year unified term of office as from the election date, allowing, at most, three (3) consecutive reappointments.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 1</B> - Upon reaching the
limit of reelections referred to in the head of this article, the member&rsquo;s return to the Board of Directors may only occur after
a period of two (2) years.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 2 </B>&ndash; The Company&rsquo;s
CEO shall integrate the Board of Directors, while holding such position.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 3 </B>&ndash; It will be
incumbent upon the Shareholders&rsquo; General Meeting electing the Board of Directors to establish the total number of positions to be
filled, within the maximum limit provided for in these Bylaws, and to appoint its Chairman, who cannot be the Company&rsquo;s CEO that
is also elected a board member.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 4</B> &ndash; The controlling
shareholder will be entitled to elect the majority of its members, pursuant to item &ldquo;a&rdquo; of Article 116, of Federal Law 6,404/1976.</P>


<!-- Field: Page; Sequence: 3 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->2<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 5 </B>&ndash; The minimum
availability required from the Chairman of the Board of Directors shall correspond to thirty (30) hours per month.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B><U>Representative of the employees</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 9 </B>&ndash; The participation
of one (1) representative of the employees in the Company&rsquo;s Board of Directors, with the same term of office as the other members,
is ensured.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 14.1pt 12pt 21.3pt; text-align: justify"><B>Paragraph 1 </B>&ndash; The
representative member of the employees shall be chosen by the employees&rsquo; votes in a direct election, with prohibited automatic reappointment,
with the administrative cooperation of the Company whenever requested.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 2 </B>&ndash; The Internal
Regulation of the Board of Directors may set forth the eligibility requirements and other conditions for the exercise as the employees&rsquo;
representative, in addition to the requirements and prohibitions of Article 17, of Federal Law 13,303/2016.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt"><B><U>Representative of the Minority Shareholders</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 10</B> &ndash; The participation
of a representative of the minority shareholders in the Company&rsquo;s Board of Directors, with the same term of office as the other
members, is ensured, pursuant to Article 239 of Federal Law 6,404/1976, and of Article 19, of Federal Law 13,303/2016.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B><U>Independent Members</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 11</B> &ndash; The Board of Directors
will have the participation of at least two (2) or twenty-five (25%) percent of independent members, pursuant to the provisions of Article
22 of Federal Law 13,303/2016 and as established in the <I>Novo Mercado</I> Rules, and the characterization of the nominees for membership
for the Board of Directors as an independent member shall be established by the Shareholders&rsquo;s General Meeting that elects them</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 1 &ndash; </B>The member
elected by the minority shareholders through separate vote, will also be considered independent, pursuant to Article 141, Paragraphs 4
and 5 and Article 239 of Federal Law 6,404/1976, and Article 22, Paragraph 4, of Federal Law 13,303/2016.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 2</B> &ndash; In case the
application of the minimum percentage referred in the caput results in a fraction number of board members, such number shall be rounded
to the immediately higher number.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt"><B><U>Vacancy and replacements</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="text-transform: uppercase"><B>ARTICLE
12</B></FONT> &ndash; In the event of vacancy in any position of the member of the Board of Directors before the end of the term of office,
the Board of Directors itself may resolve on the choice of the substitute to complete the term of office of the replaced person and the
resolution will be subject to the subsequent approval by the next Shareholders&rsquo; General Meeting.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Sole Paragraph</B> &ndash; In the
event of vacancy in the position of the Board member representative of the employees, the member shall be replaced by another representative
of the employees, pursuant to Paragraphs 1 and 2 of Article 9 of these Bylaws.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt"><B><U>Operation</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 13 </B>&ndash; The Board of Directors
will meet, on an ordinary basis, once a month and, on an extraordinary basis, whenever necessary to the Company&rsquo;s interests.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 1 </B>&ndash; The Board
of Directors&rsquo; meetings shall be called by its Chairman, or by the majority of acting Board members, upon writing or electronic correspondence
to all Board members and also to the State, by means of the CODEC, in, at least, ten (10) days in advance and the call notice must include
the date, time and matters of the agenda.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 2 </B>&ndash; The Chairman
of the Board of Directors shall supervise so that the Board members individually receive, with the due antecedence in relation to the
date of the meeting, the documentation with the necessary information to allow the discussion and resolution of the agenda.</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->3<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 3 </B>&ndash; The Board
of Directors&rsquo; meetings shall be instated upon the attendance of the majority of its acting Members, being the Chairman incumbent
of presiding the activities or, in his absence, another Board member appointed by him.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 4</B> &ndash; The Chairman
of the Board of Directors, at his own initiative or at the request of any Board member, may convene the Company&rsquo;s executive officers
to attend the meetings and provide clarifications or information on the matters to be resolved on. The requests must be addressed to the
Company's CEO, and the call notice must include the date, time and matters of the agenda.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 5</B> &ndash; The matters
submitted to the appraisal of the Board of Directors shall be instructed with the approved proposal of the executive board or of the competent
bodies of the Company, and with the legal opinion, whenever necessary for the examination of the matter.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 6 </B>&ndash; The annual
or extraordinary meeting shall be held in person and may, if so resolved by the Chairman of the Board of Directors or by the majority
of the acting Board members, be held by means of teleconference, videoconference or other qualified means of will manifestation of the
absent Board member, whose vote will be considered valid for all effects, without adverse effects to the subsequent drawing up and execution
of the respective minutes.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 7 </B>&ndash; The Board
of Directors shall resolve by majority of votes of the attending members of the meeting, prevailing, in case of tie, the proposal that
counts on the vote of the Board member presiding the activities.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 8 </B>&ndash; The meetings
of the board of directors will have as secretary whoever their chairman appoints and all resolutions will be recorded in minutes drawn
up and registered in the proper book, and a copy of them must immediately be included in the SIEDESC.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 9 </B>&ndash; The extract
of the minutes shall be filed in the trade board and published, whenever it has resolutions destined to produce effects before third parties.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B><U>Duties</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 14 </B>&ndash; In addition to the
duties set forth by law, the Board of Directors is also responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to approve the strategic planning,
including the updated long-term strategy with analysis of risks and opportunities for at least the next five (5) years, the action guidelines,
the result targets and the performance evaluation indexes;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to approve the business plan
for the next fiscal year, the annual and multi-year programs, with indication of the respective projects;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to approve the budgets of expenditures
and investments of the Company, with indication of the sources and uses of funds;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to express its opinion on the
management&rsquo; report and on the accounts of the executive board, pursuant to Article 142, item V, of Federal Law 6,404/1976;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">V.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to promote annually the analysis
of the fulfillment of targets and results in the execution of the business plan of item II and the long-term strategy of item I of this
Article, and shall publish its conclusions and inform them to the Legislative Assembly and the Audit Court of the State, excluding strategic
information from this obligation, whose disclosure may prove to be detrimental to the interest of the Company; </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18.2pt"></TD><TD STYLE="width: 21.25pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to prepare the policy of distribution
of dividends, considering the public interest that justified the creation of the Company, submitting it to the Shareholders&rsquo; General
Meeting;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18.2pt"></TD><TD STYLE="width: 21.25pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to assess and approve the following
institutional policies: </FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0pt 0pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 42.55pt; text-align: justify">a) disclosure of material information;</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 42.55pt; text-align: justify">b) trading with securities;</P>


<!-- 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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->4<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 42.55pt; text-align: justify">c) appointment of members of the Board
of Directors, advisory committees, executive office and of the fiscal committee;</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 42.55pt; text-align: justify">d) internal audit;</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 42.55pt; text-align: justify">e) compliance;</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 42.55pt; text-align: justify">f) corporate risk management;</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 42.55pt; text-align: justify">g) compensation; and</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 42.55pt; text-align: justify">h) establish spokesperson policy;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 21.45pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to annually approve and review
the preparation and disclosure of the policy on transactions with related parties;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IX.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to resolve on the personnel
policy, including the determination of the staff, plan of positions and salaries, general collective negotiation conditions, opening of
a competitive civil-service examination to fill positions vacant and Profit Sharing Program; </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">X.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to resolve on the policy of
prices and tariffs of goods and services rendered by the Company, respecting the regulatory framework of the respective sector;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to evaluate the Company's Officers,
pursuant to item III, of Article 13, of Federal Law 13,303/2016, and may rely on methodological and procedural support from the Eligibility
and Advisory Committee;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to supervise the execution of
the plans, programs, projects and budgets; </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to inspect the compliance with
the specific targets and results to be achieved, undertaken by the members of the executive board upon their investiture;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XIV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to establish the drafting of
the annual governance letter and endorse it;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to define goals and priorities
of public policies compatible with the company&rsquo;s operation area and its corporate purpose;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XVI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to authorize, the opening, installation
and extinguishment of branches, facilities, agencies, main branches, offices and representations;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XVII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">resolve on the capital stock
increase within the limit authorized by these Bylaws, establishing the respective subscription and payment conditions;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XVIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to establish the maximum indebtedness
limit of the company;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XIX.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">resolve on the issuance of common
debentures non-convertible into shares and without real security and, the other types of debentures, on the conditions mentioned in Paragraph
1, Article 59 of Federal Law 6,404/1976, as well as resolve on the issuance of a promissory notes for public distribution offerings;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XX.</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.1pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to resolve
on the declaration of interest on own capital and/or distribution of dividends due to the result for the current year, for the year ended
or profit reserve, without adverse effects to the subsequent ratification of the general meeting; </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to propose to the Shareholders&rsquo;
General Meeting the payment of interest on equity or the distribution of dividends due to the result of the fiscal year concluded; </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to previously authorize the
execution of any legal businesses wh. en the amount involved exceeds seventy million reais (R$70,000,000.00), including the acquisition,
sale or encumbrance of assets, the obtainment of loans and financings, the assumption of obligations in general and also the association
with other legal entities;</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->5<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to authorize the incorporation
of a wholly-owned subsidiary or the interest in the capital of other companies, except the competence of the Shareholders&rsquo; General
Meeting provided for in article 256 of Law 6,404/1976, as well as establish the overall guidance to be followed by this subsidiary/company;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXIV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to approve the hiring of civil
liability insurance in favor of the members of the statutory bodies, employees, agents and mandatories of the Company;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to grant licenses to officers,
in compliance with the pertinent regulation;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXVI.</FONT></TD><TD STYLE="text-align: justify; padding-right: 14.1pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to approve
its Internal Regulations, which clearly defines its responsibilities and duties and prevents situations of conflict with the executive
board, notably with the CEO, in addition to approving the internal regulation of the executive board and of the audit committee; and any
other statutory committee, pursuant to article 160 of Federal Law 6,404/1976;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXVII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">authorize the company to buy
back its own shares, under the current legislation and previously hearing the fiscal committee</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXVIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to previously express itself
about any proposal of the executive board or issues to be submitted to the Shareholders&rsquo; General Meeting;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXIX.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to call the examination of any
issues comprised in the competence of the executive board and issue a binding guidance on it;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXX.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to discuss, approve, and monitor
decisions involving practices of corporate governance, stakeholder relationships, people management policies, integrity program, Code
of Conduct and Integrity of agents;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXXI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to appoint a statutory Officer
who will lead the area of compliance and risk management, bound to the CEO;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXXII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to maintain direct contact with
the Compliance Area in situations where the members of the Board of Directors are suspected of being involved in irregularities or when
the CEO does not meet the obligation to adopt the necessary measures in relation to the situation reported to him, to take the appropriate
measures; </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXXIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to approve the Code of Conduct
and Integrity, to be prepared and disclosed by the Company, in compliance with the guidelines established by CODEC; </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXXIV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to supervise the institution
of a prior consultation mechanism to resolve doubts on the application of the Code of Conduct and Integrity, which will be available on
the website, providing the ethical standards expected from the management, members of the fiscal committee, members of the statutory committees,
employees, agents and third-parties hired; </FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXXV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to implement and supervise the
risk management and internal control systems established for the prevention and mitigation of the main risks to which the Company is exposed,
including risks related to the integrity of the accounting and financial information and those related to corruption and fraud;</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXXVI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to develop and inform a substantiated
opinion on any public offer for the acquisition of shares which has the Company's shares within fifteen (15) days as of the publication
of the call notice for the respective public offer, on which shall notify, at least: </FONT></TD></TR></TABLE>





<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0pt 0pt 12pt 50pt; text-align: justify">&nbsp;i. the convenience and the
appropriateness of the public offer as to the interest of group of its shareholders, including with regard to the price and potential
impacts to the liquidity of their securities;</P>



<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0pt 0pt 12pt 50pt; text-align: justify">ii. the strategic plans revealed by offeror
in relation to the company;</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0pt 0pt 12pt 50pt; text-align: justify">iii. with respect to alternatives of the
public offerings acceptance available in the market. The Opinion must include the substantiated opinion favorable or contrary to the acceptance
of the public offer and warn that the responsibility lies on each shareholder for the final decision on the referred acceptance.</P>



<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 9pt Verdana, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt">XXXVII.</TD><TD STYLE="text-align: justify">to promote the annual disclosure of the integrated or sustainability report;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 9pt Verdana, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt">XXXVIII.</TD><TD STYLE="text-align: justify">to disclose and encourage the use of the institutional whistleblower channel;</TD></TR></TABLE>


<!-- Field: Page; Sequence: 7 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->6<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.6pt"></TD><TD STYLE="width: 7.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XXXIX.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to approve the proposal to increase
the expenditure limit for advertising and sponsorship prepared by the joint executive board, pursuant to the provisions of Article 93,
Paragraph 2, of Federal Law 13,303/2016; and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XL.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to elect and remove members
of the executive board and of the audit committee.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER VI</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>EXECUTIVE BOARD</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt"><B><U>Members and Term</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 15 </B>&ndash; The executive board
shall be composed of six (6) members, with CEO, Corporate Management Officer, Chief Financial Officer and Investor Relations Officer,
Technology, Enterprises and Environment Officer, Metropolitan Officer and Regional Systems Officer, with their respective duties set forth
herein, all with a two (2) year unified term of office and with three (3) consecutive reelections allowed.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Sole Paragraph </B>&ndash; The officers
must undertake to commit with their specific targets and results to be invested in their positions in the executive board.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B><U>Vacancy and replacements</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 16 </B>&ndash; In the absences or
temporary impediments of any Officer, the CEO shall appoint another member of the executive board to cumulate the functions.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Sole paragraph </B>&ndash; In his
absences and temporary impediments, the CEO will be replaced by the Officer appointed by him and, if there is no appointment, by the Officer
responsible for the financial area.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 17 </B>- In case of vacancy, and
until a replacement is elected, the CEO shall be replaced by the Officer responsible for the financial area.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt"><B><U>Operation</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 18 </B>&ndash; The executive board
will meet, on an ordinary basis, at least twice (2) a month and, on an extraordinary basis, by call of the CEO or of other two Officers.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 1 </B>&ndash; The meetings
of the executive board will be instated with the attendance of at least half of the acting Officers, considering approved the matter with
the agreement of the majority of the attendees; in the event of a tie, the proposal with the vote of the CEO will prevail.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 2 </B>&ndash; The resolutions
of the executive board will be recorded in minutes drawn up in the company&rsquo;s records and signed by all attending Officers.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 3 </B>&ndash; The CEO may,
in the call for the meeting, allow the participation of the officers by telephone, videoconference, or other means of communication which
may ensure the effective participation and the authenticity of their vote; the officer who virtually participates in the meeting will
be considered present and his vote will be valid for all legal effects, without adverse effects to the subsequent drawing up and signature
of the respective minutes.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B><U>Duties</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 19 </B>&ndash; In addition to the
duties set forth by Law, it is incumbent upon the joint executive board:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 36pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">To prepare and submit to the
approval of the Board of Directors:</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.85pt"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">a)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the proposal for the strategic
planning, including the updated long-term strategy with analysis of risks and opportunities for at least the next five (5) years, the
action guidelines, the result targets and the performance evaluation indexes;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 71.15pt; text-align: justify">&nbsp;</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->7<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.85pt"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">b)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the proposal for the business
plan for the next fiscal year, the annual and multi-year programs, with indication of the respective projects;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.85pt"></TD><TD STYLE="width: 21.3pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">c)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the Company&rsquo;s annual budget
for expenditures and investments, with the indication of the sources and uses of funds, as well as their changes;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">d)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the evaluation of the performance
result of the Company&rsquo;s activities;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">e)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the Company&rsquo;s quarterly
reports jointly with the balance sheets and other financial statements;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">f)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">annually, the draft of the management
report together with the balance sheets and other financial statements and respective notes, with the report of independent auditors and
the proposal of allocation of the income for the year;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">g)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the interim balance sheets,
quarterly;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">h)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the Internal Regulation of the
executive board;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">i)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">proposal of capital increase
and of amendment to the bylaws, listening to the fiscal council, when the case may be;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">j)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the proposal for the personnel
policy; and</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">k)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the proposal to increase the
expenditure limit for advertising and sponsorship, pursuant to the provisions of Article 93, Paragraph 2, of Federal Law 13,303/2016.</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">Approve:</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">a)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the technical-economic evaluation
criteria for investment projects, with the respective responsibility delegation plans for their execution and implementation;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">b)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the chart of accounts;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">c)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the Company&rsquo;s annual insurance
plan;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">d)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">residually, within the statutory
limits, everything related to the company&rsquo;s activities which is not of private competence of the CEO, of the Board of Directors
or of the Shareholders&rsquo; General Meeting; and</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">e)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the Code of Conduct and Integrity
of the Company;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">Authorize, subject to the limits
and guidelines established by law, by these Bylaws and by the Board of Directors:</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">a)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">acts of resignation or judicial
or extrajudicial transaction, to end litigations or holdovers, establishing limits of amounts for the delegation of the practice of these
acts by the CEO or any other Officer; and</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.8pt"></TD><TD STYLE="width: 28.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">b)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the execution of any legal businesses
when the amount involved exceeds ten million reais (R$10,000,000.00), without adverse effects to the competence attributed by the Bylaws
to the Board of Directors, including the acquisition, sale or encumbrance of assets, the obtainment of loans and financings, the assumption
of obligations in general and also the association with other legal entities.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 20 </B>&ndash; The Internal Regulation
of the executive board may show in detail the individual attributions of each officer, as well as to subject the practice of certain acts
comprised in the specific competence areas to the previous authorization of the joint executive board.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 1. </B>The area of audit
and the area of compliance and corporate risk management will be administratively connected to the CEO.&nbsp;</P>


<!-- 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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->8<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 2.</B> The CEO is responsible
for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">representing the Company, as
plaintiff or defendant, in or out of court, and may initial summons and notifications, pursuant to Article 19 of these Bylaws;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">institutionally representing
the Company in its relations with public authorities, private entities and third parties in general;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">convening and chairing the meetings
of the executive board;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">coordinating the activities
of the executive board;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">V.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">issuing acts and resolutions
that are related to or resulting from the executive board&rsquo;s resolutions;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">coordinating the Company&rsquo;s
ordinary management, including the implementation of policies and the execution of resolutions taken by the Shareholders&rsquo; General
Meeting, Board of Directors and joint executive board;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">coordinating the activities
of the other Officers;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">promoting the organizational
and functional structuring of the Company;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IX.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">issuing the normative instructions
that govern the activities of the Company&rsquo;s different areas;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">X.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">coordinating, evaluating and
controlling functions relating to: </FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 52.9pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">a)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the CEO&rsquo;s office; </FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 52.9pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">b)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the joint business plan, management
and organization; </FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 70.9pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 52.9pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">c)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">Communication; </FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 52.9pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">d)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">regulatory affairs; </FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 70.9pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 52.9pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">e)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">ombudsman; </FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 52.9pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">f)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">quality; and</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 52.9pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">g)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">new business. </FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0pt 0pt; text-align: justify"><B>&nbsp;</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 3.</B> The Corporate Management
Officer is responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">commercial processes and customer
relationship</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">human resources and social responsibility;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">information technology;</FONT></TD></TR></TABLE>



<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">&nbsp;</FONT></P>

<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT><FONT STYLE="font: 7pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">property; </FONT></P>



<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">V.</FONT><FONT STYLE="font: 7pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">legal affairs; and</FONT></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">supplies and contracts.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 4.</B> The Chief Financial
Officer and Investor Relations Officer is responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">planning, raising and allocating
financial resources</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">controllership;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->9<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">accounting;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">investor relations;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">V.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">operations in the capital markets
and other financial operations;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">indebtedness control;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">corporate governance; and</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">costs and tariffs;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 5.</B> The Technology,
Enterprises and Environment Officer is responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">environment;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">research, innovation, technological
and operational development;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">quality control of water and
sewage products;</FONT></TD></TR></TABLE>



<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT><FONT STYLE="font: 7pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">special investment program; and</FONT></P>



<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">V.</FONT><FONT STYLE="font: 7pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">special projects. </FONT></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Paragraph 6.</B> The Metropolitan
Officer, in the metropolitan area of S&atilde;o Paulo and part of Bragantina region, and the Regional Systems Officer, in the other areas
of the Company&rsquo;s operation in the State of S&atilde;o Paulo, are responsible for:</P>

<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT><FONT STYLE="font: 7pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">operation, maintenance and execution of Works and services
in the system of water Supply, sewage collection and treatment, including in wholesale;</FONT></P>



<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT><FONT STYLE="font: 7pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">commercial relations and customer service; </FONT></P>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">control of the economic-financial
and operational performance of its business units;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT><FONT STYLE="font: 7pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">advisory to autonomous municipalities of water supply
and sanitary sewage systems;</FONT></P>



<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">V.</FONT><FONT STYLE="font: 7pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">negotiation of contracts for the provision of public
services of water supply and sewage services in the municipalities; and</FONT></P>



<P STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 49.85pt; text-align: justify; text-indent: -18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VI.</FONT><FONT STYLE="font: 7pt Times New Roman, Times, Serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</FONT><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">negotiation with the community and city halls, aiming
at aligning the interests of its clients and of the company.</FONT></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B><U>Representation of the Company</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt"><B>ARTICLE 21 </B>- The Company undertakes obligations before third
parties:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">with the signature of two Executive Officers, one necessarily
being the CEO or the Officer in charge for the financial area;<BR>
<BR>
</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">with the signature of one Officer and one proxy, according
to the powers in the respective power-of-attorney;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">with the signature of two proxies, according to the powers
in the respective power-of-attorneys;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 36pt"></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT></TD><TD><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">with the signature of one proxy, according to the powers
in the respective power-of-attorneys, in this case exclusively to carry out specific acts.</FONT></TD></TR></TABLE>


<!-- 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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->10<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Sole paragraph </B>&ndash; The powers
of attorney may be granted through a public or private instrument, including by electronic means, with a determined term, and will specify
the powers granted; only the powers of attorney for the forum in general shall have an undetermined term.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER VII</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>FISCAL COMMITTEE</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 22 </B>&ndash; The Company shall
have a permanent fiscal committee, with the competences and duties provided for by the law.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 23 </B>&ndash; The fiscal committee
shall be composed of at least three (3) and at most five (5) sitting members, and the same number of deputies, annually elected by the
Shareholders&rsquo; General Meeting and with two (2) consecutive reelections allowed.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.5pt; text-align: justify"><B>Sole Paragraph </B>&ndash; In the
event of vacancy or impediment of the sitting member, the deputy will assume.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 24 </B>&ndash; The fiscal committee
will meet, on an ordinary basis, once a month and, on an extraordinary basis, whenever called by any of its member or by the executive
board, drawing up the minutes in the Company&rsquo;s records.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt"><B><U>Representative of the Minority Shareholders</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 25</B> &ndash; The participation
of a representative of the minority shareholders in the Company&rsquo;s Fiscal Council, and the respective deputy, is ensured, pursuant
to Article 240 of Federal Law 6,404/1976.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER VIII</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>AUDIT COMMITTEE</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 26 </B>- The Company shall have
an audit committee, an advisory body bound to the Board of Directors, composed of three (3) members of the Board of Directors, who shall
cumulatively comply with the requirements of independence, technical expertise, and availability of time.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 1 </B>&ndash; All members
of the audit committee shall comply with the Independence requirements provided for in the applicable legislation, without prejudice to
any allowed exoneration.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 2</B> &ndash; The minimum
conditions established by law, in particular <U>&sect;</U> 1, of Article 25, of Federal Law 13,303/2016, must be observed to become a
member of the audit committee.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 3 </B>- The members of
the audit committee shall have sufficient technical knowledge in accounting and financial matters and at least one (1) member must have
a proven experience with the internationally-accepted accounting standards, analysis, preparation and evaluation of financial statements
and knowledge of internal controls and policies for disclosing information to the market.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 4 </B>&ndash; The Audit
Committee shall have a coordinator, whose activities will be defined in the internal chart.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 5 </B>- The minimum availability
required from each member of the audit committee shall correspond to thirty (30) hours per month.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 27 </B>- The audit committee&rsquo;s
members may be simultaneously designated with their appointment to the board of directors, or by later resolution of the board of directors
itself.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 1 </B>&ndash; The audit
committee&rsquo;s members shall exercise their function for the same period as the respective term of office of the Board of Director&rsquo;s
member, or until otherwise resolved by the Shareholders&rsquo; General Meeting or the board of directors itself.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 2</B> &ndash; Having exercised
a term of office for any period, the members of the audit committee may only rejoin such body, of the same Company, after at least three
(3) years of the end of the term of office.</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->11<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 28 </B>- In addition to the provisions
of the law, the audit committee is responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">recommending the choice of the
person responsible for the internal audit appointed by the joint executive board, propose their approval and dismissal to the board of
directors and supervise the performance of the respective activities;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">approving the Company's Code
of Conduct and Integrity and periodically evaluating the compliance with its business practices, including the commitment of the Management
to disseminate the integrity culture and the valorization of ethical behavior;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">monitoring the evaluating procedures
of a violation of the Code of Conduct and Integrity, as well as the events registered in the Whistleblower Channel;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">receiving and handling denunciations
and complaints from third parties on issues related to accounting, internal accounting controls and audit;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">V.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">evaluating the guidelines of
the hiring process of an independent audit company, as well as other conditions for service provision, recommending the hiring to the
board of directors;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">commenting on the hiring and
dismissal of the independent auditors;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">expressing prior opinion on
the hiring of other services from the independent audit company, or companies related thereto, that are not comprised in audit typical
activities;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">expressing its opinion, at any
time, about the performance of the accounting and internal audit departments, proposing to the executive board the measures that it deems
appropriate;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IX.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">dealing directly with the internal
audit department and the independent auditors, following up on the respective work, together with the Chief Financial Office and Investor
Relations Office;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">X.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">analyzing the internal audit&rsquo;s
and the independent auditors&rsquo; reports before they are submitted to the board of directors;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">ensuring that the material resources
made available to the internal audit are adequate;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">monitoring, evaluating, and
analyzing the preparation of the quarterly, interim and annual financial statements, seeking to ensure their integrity and quality, informing
the board of directors when necessary; </FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XIII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">constantly evaluating the accounting
practices, the internal controls and processes adopted by the Company, seeking to identify critical issues, financial risks and potential
contingencies, and proposing such improvements as they deem necessary;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XIV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">requesting the hiring of specialized
services to support the audit committee&rsquo;s activities, whose remuneration shall be supported by the Company, within its annual approved
budget;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">evaluating the reasonableness
of the parameters on which the actuarial calculations are based, as well as the actuarial result of the supplementary pension plans maintained
by Sabesp Social Security Foundation&ndash; Sabesprev (Funda&ccedil;&atilde;o Sabesp de Seguridade Social &ndash; Sabesprev);</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XVI.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.55pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">Follow
the activities of the internal audit, compliance and of the Company&rsquo;s internal controls; </FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XVII.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.55pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">Assess
and monitor the Company&rsquo;s risk exposure;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 21.5pt"></TD><TD STYLE="width: 14.5pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XVIII.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.55pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">Evaluate,
monitor and recommend to the Management the correction or improvement of the Company&rsquo;s internal policies, including transactions
with related parties; and</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">XIX.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">Have means to receive and deal
with information about the unfulfilment of legal and normative provisions applicable to the Company, besides regulations and internal
codes, including with provision of specific procedures for the protection of the provider and the confidentiality of the information.</FONT></TD></TR></TABLE>


<!-- Field: Page; Sequence: 13 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->12<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 1 </B>&ndash; Resolutions
of the audit committee shall made by the majority of its members, without prejudice to the right of its members to individually request
information and examine Company&rsquo;s books, documents and papers.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 2 </B>&ndash; Reports made
by the internal audit department shall always be submitted to the executive board and the audit committee&rsquo;s members.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 29 </B>&ndash; The audit committee
shall draft its Internal Regulations, and submit them to board of directors&rsquo; approval.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Sole Paragraph </B>&ndash; The Internal
Regulations may expand the powers of the audit committee, and shall also provide for the duties of the coordinator, the holding of periodic
meetings, the form of registration of its opinions and resolutions, in addition to other issues deemed appropriate to the good development
the work.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 30 - </B>The audit committee shall
have operating autonomy and its own annual budget approved by the board of directors, as set forth by Law and by the <I>Novo Mercado </I>Rules<I>.</I></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B><U>CHAPTER IX</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>ELIGIBILITY AND ADVISORY COMMITTEE</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 31 </B>&ndash; The Company shall
have an Eligibility and Advisory Committee, responsible for supervising the process of appointment and evaluation of Officers and members
of the fiscal committee, in compliance with the provisions of Article 10 of Federal Law 13,303/2016.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 1</B> &ndash; The Committee
shall:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">issue a conclusive statement,
to assist the shareholders in the appointment of Officers and members of the fiscal committee, regarding the compliance with the requirements
and the absence of prohibitions for the respective elections;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">verify the compliance of the
evaluation process of the members of the Management and of the fiscal committee;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">resolve, by majority vote, recorded
in the minutes, which shall be drawn up as a summary of the facts, including dissents and protests, and only include the transcript of
the resolutions taken;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">express an opinion, within seven
(7) days from the date of receipt of the registration forms and supporting documentation of the nominees, submitted by CODEC, otherwise
the omission will be notified to the board of directors and competent government bodies; and</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 31.85pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">V.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">provide methodological and procedural
support so that the board of directors may evaluate the performance of Officers and other members of statutory committees. </FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 2</B> &ndash; In case of
urgency, the Committee shall optionally meet by virtual means, issuing its resolution to enable the necessary procedures in due time.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 3</B> &ndash; After the
committee expresses an opinion, a copy shall be submitted by the company to CODEC, for the due measures.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 4</B> &ndash; The originals
of the registration forms and supporting documents examined must be kept on file by the Company.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 32</B> &ndash; The management bodies
may also submit to the Committee a request for strategic advice to meet the public interest that justified the creation of the Company,
pursuant to Article 160 of Federal Law 6,404/1976.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 33</B> &ndash; The Committee shall
be composed of up to three (3) members, elected and dismissed by a Shareholders&rsquo; General Meeting, who may attend the meetings of
the board of directors, in matters related to the duties of said Committee, with the right to speak but not to vote.</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->13<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Sole Paragraph</B> &ndash; The members
of the Committee must have at least three (3) years of professional experience in Public Management, or three (3) years in the private
sector, in the Company's area of activity or in a related area.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B><U>CHAPTER X</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>COMPLIANCE AND RISK MANAGEMENT AREA</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 12pt 0; text-align: justify"><B>ARTICLE 34</B> &ndash; The Company shall have
a Compliance and Risk Management Area connected to the CEO and headed by the statutory officer appointed by the board of directors, and
this Area may count on the operational support from the internal audit and keep direct communication with the fiscal committee, with the
statutory audit committee, and the board of directors, when there is suspicion of involvement with wrongdoing by the executive board members.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 35 </B>&ndash; In addition to complying
with the applicable provisions of Federal Law 13,303/2016, the area shall be responsible for the following:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to establish policies to encourage
the compliance with laws, rules and regulations, as well as to prevent, detect and treat risks of irregular, illicit and unethical conducts
by the Company&rsquo;s members, and to do so, adopt efficient structures and practices of internal controls and management of strategic,
equity, operational, financial, socio-environmental and reputational risks, among others;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to promote the importance of
compliance, risk management and internal control;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to identify and classify, together
with the several areas of the company, the main risks to which the Company is subject, coordinating these activities;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to prepare, together with the
other areas of the company, and to monitor the action plans to mitigate the identified risks;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">V.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to adopt, together with the
several areas of the company, procedures of internal control to prevent or detect the inherent or potential risks to timing, reliability
and accuracy of the Company&rsquo;s information;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VI.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to prepare the integrity program,
submitting to the approval of the joint executive board, audit committee and board of directors, observing the guidelines established
in State Decree 62,349, of December 26, 2016; </FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 18pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">VII.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">to prepare periodic reports
on its activities, submitting them to the joint executive board, the board of directors, the fiscal committee and the audit committee.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER XI</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>INTERNAL AUDIT</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 36</B> &ndash; The Company shall
have an Internal Audit, connected to the board of directors through the audit committee and functionally to the CEO, governed by the applicable
laws and regulations.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Sole Paragraph</B> &ndash; The area
will be responsible for evaluating:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the adequacy of internal controls;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the effectiveness of the risk
management and of the governance processes; and</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the reliability of the process
of collecting, measuring, classifying, accumulating, recording and disclosing events and transactions, to prepare financial statements;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt/115% Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 38.95pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">IV.</FONT></TD><TD><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the proper application of the principle of segregation of
duties, to avoid the occurrence of conflicts of interest and fraud. </FONT></TD></TR></TABLE>


<!-- Field: Page; Sequence: 15 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->14<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 37</B> &ndash; The guidelines of
the internal audit&rsquo;s process and duties shall be defined in the Institutional Policy of Internal Audit, analyzed by the joint executive
board and approved by the audit committee and the board of directors.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 38</B> &ndash; The audit committee
shall be responsible for recommending the choice, by the board of directors, of the person responsible for the Internal Audit appointed
by the joint executive board, propose their dismissal and supervise the execution of the respective activities.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 39</B> &ndash; The audit committee
may provide operating support to the Compliance and Risk Management Area in situations where the members of the executive board are suspected
of being involved in irregularities or they do not meet the obligation to adopt the necessary measures in relation to the situation reported
to them.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER XII</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>COMMON RULES TO STATUTORY BODIES</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt"><B><U>Investiture, Impediments and Prohibitions</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 40</B> &ndash; For the purposes
of this chapter, the board of directors, the executive board, the fiscal committee, the audit committee, and the Eligibility and Advisory
Committee are considered &ldquo;statutory bodies&rdquo;.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 41</B> &ndash; The members of statutory
bodies must prove their compliance with the legal requirements, submitting their curriculum and the relevant documents, as set forth in
the current regulations.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Sole Paragraph</B> &ndash; The requirements
of the policy of appointment of the controlling shareholder shall be observed by the members appointed by it.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 42 </B>&ndash; The members of the
board of directors, of the executive board and of the fiscal committee will be invested in their positions upon the execution of the instrument
of investiture drawn up in the respective book of minutes, in compliance with the applicable legal requirements.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 1</B> &ndash; The instrument
of investiture of the Members of the Board of Directors, executive officers, sitting and alternate members of the fiscal committee, must
express its subordination to the arbitration clause of the <I>Novo Mercado</I>&rsquo;s rules, referred on article 52.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 2 </B>&ndash; The instrument
of investiture shall be signed in within thirty (30) days following the election, under penalty of its inefficiency, except for a justification
accepted by the body for which the member has been elected, and shall contain the indication of at least one domicile to receive notifications
and summons of administrative and judicial procedures, related to acts of his management, and the change of the domicile indicated is
allowed only by means of a written communication.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 3 </B>&ndash; The investiture
will be subject to the presentation of the declaration of assets and values, as provided for in the state legislation, which shall be
annually updated and at the end of the term of office.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 43</B> &ndash; The members of the
statutory bodies may convene employees to attend meetings and provide clarification or information on the matters to be resolved on. The
requests must be addressed to the Company's CEO and/or the respective Officer, and the call notice must include the date, time and matters
of the agenda.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 44</B> &ndash; The change in the
composition of statutory bodies will be immediately notified to CODEC.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 45 </B>&ndash; Except in the assumption
of resignation or dismissal, the term of office of the members of the statutory bodies is considered automatically postponed, until the
investiture of the respective alternate members.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt"><B><U>Compensation and Licenses</U></B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 46 </B>&ndash; The compensation
of the members of the statutory bodies shall be established by the Shareholders&rsquo; General Meeting and there shall not be accumulation
of earnings or any advantages due to the replacements occurring by virtue of vacancy, temporary absences or impediments, or due to the
accumulation of positions in councils and committees, and the member of the board of directors can choose one of the compensations.</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->15<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Sole Paragraph</B> &ndash; It is
allowed to the Officer, who on the date of the investiture belongs to the Company&rsquo;s staff, to opt for the respective salary.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 47 </B>&ndash; The Officers may
request to the board of directors removal by unpaid leave, as long as for a term not longer than three (3) months, which shall be recorded
in the minutes.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER XIII</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>FISCAL YEAR AND FINANCIAL STATEMENTS PROFITS,
RESERVES AND DIVIDEND DISTRIBUTION</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 48 </B>&ndash; The fiscal year shall
match the calendar year, and after the closing of the fiscal year, the executive board shall require the preparation of the financial
statements, pursuant to the law.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 49 </B>&ndash; Common shares shall
be entitled to the minimum mandatory dividends of twenty-five percent (25%) of the fiscal year&rsquo;s net income, after the deductions
established or authorized by law.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 1 </B>&ndash; Dividends
may be paid by the Company as interest on equity.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 2 </B>&ndash; The Company
may draw interim balance sheets, quarterly, for purposes of payment of dividends or payment of interest on equity.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 3 </B>&ndash; The approved
dividends shall not accrue interest and those that are not claimed within three (3) years as of the date of the Shareholders&rsquo; General
Meeting that approved them, shall lapse in favor of the Company.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 4 </B>&ndash; The board
of directors may propose to the Shareholders&rsquo; General Meeting that the remaining balance of the income for the year, after the deduction
of the legal reserve and of the minimum mandatory dividend, is destined to the creation of an investment reserve, which will comply with
the following principles:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 42.4pt"></TD><TD STYLE="width: 14.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">its balance, jointly with the
balance of the other profit reserves, except the reserves for contingencies and of unrealized profits, may not exceed the capital stock;
and</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 42.4pt"></TD><TD STYLE="width: 14.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">the reserve has as purpose to
ensure the investment plan and its balance may be used:</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt; text-indent: -14.4pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 56.75pt"></TD><TD STYLE="width: 14.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">a)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">in the absorption of losses,
whenever necessary;</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 56.75pt"></TD><TD STYLE="width: 14.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">b)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">in the payment of dividends,
at any moment;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 36pt; text-indent: -14.4pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 56.75pt"></TD><TD STYLE="width: 14.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">c)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">in the operations of redemption,
reimbursement or purchase of shares, authorized by law; and</FONT></TD></TR></TABLE>



<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 12pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 56.75pt"></TD><TD STYLE="width: 14.4pt"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">d)</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font: 9pt Verdana, Helvetica, Sans-Serif">in the incorporation to the
capital stock.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER XIV</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>WINDING UP</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 50 </B>&ndash; The company shall
enter into liquidation in the cases provided for by law, and the Shareholders&rsquo; General Meeting shall be responsible, as the case
may be, for determining the means of liquidation and appointing the liquidator, fixing his/her remuneration.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER XV</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>DEFENSE MECHANISM</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 51 </B>- The company shall ensure
the members of its statutory bodies, through an <U>external legal professional</U> to be hired, the technical defense in legal and administrative
lawsuits proposed during or after their respective terms of office, for acts related to the performance of their duties.</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->16<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 1 </B>&ndash; The same
protection is extended to the Company&rsquo;s employees, representatives and proxies who have acted to the extent of the powers conferred
upon them.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 2</B> &ndash; Upon authorization
of the joint executive board, provided that it does not imply a conflict of interest, the legal counsel of the professional staff of the
Company is ensured for the preliminary procedures.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 3 </B>&ndash; The Company
may, at its criteria, keep a permanent contract or a pre-qualification with one or more preeminent reputed law firms, or have preapproved
law firms, with the purpose of being ready to undertake, at any time, the technical defense of the agents encompassed by this article.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 4 </B>&ndash; If, by any
reason, no preapproved or hired law firm has been hired by the company, the agent may hire a legal counsel he trusts and have the legal
fees or any other expenses incurrent in his technical defense paid to him in advance or reimbursed by the Company, after presenting evidence
that such expenses have been or will be incurred, provided that the amounts involved have been approved by the board of directors as to
their reasonableness.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 5 </B>&ndash; If the Company
does not approve, in due time, the professional appointed to take over the defense, the interested party may contract it on its own account,
being entitled to reimbursement of the respective legal fees established, within the limits approved by the board of directors as to their
reasonableness.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 6 </B>&ndash; The Company
shall ensure the technical defense as well as access in real time to all required documentation for this effect. It shall also bear all
legal costs, charges of any nature, and court deposits.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 7 </B>- Agents found guilty
or held liable, with a final and unappealable decision, shall be obliged to reimburse the Company for the amounts effectively disbursed,
except when it is evidenced that they acted in good faith and in pursue of corporate interest.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 8 </B>&ndash; The Company
may contract insurance on behalf of the members of its statutory bodies, as well as of its employees, representatives and proxies, for
covering liabilities arising from the performance of their duties.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER XVI</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>ARBITRATION</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 52 </B>&ndash; The Company, its
shareholders, managers and the sitting and alternate members of the fiscal committee undertake to submit to arbitration, before the Market
Arbitration Chamber through its regulation, any controversy that may arise between them, related to or caused by its condition as an issuer,
shareholder, manager and member of the fiscal committee particularly, the ones the application, validity, effectiveness, interpretation,
violation and its effects, of the provisions set forth in the Brazilian Corporation Law, these Bylaws, in the rules issued by the Conselho
Monet&aacute;rio Nacional (National Monetary Council), by the Central Bank of Brazil, and by the Comiss&atilde;o de Valores Mobili&aacute;rios
(&ldquo;CVM&rdquo;), as well as in the other rules applicable to the operation of the capital market in general, besides those provided
for in the <I>Novo Mercado</I> Rules, in other of B3 rules, and in the <I>Novo Mercado</I> Listing Agreement.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER XVII</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHANGE OF CONTROL AND CANCELLATION OF THE
PUBLICLY-HELD COMPANY REGISTRATION</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 53 </B>&ndash; The direct or indirect
disposition of the control of the Company, either through a single transaction or through a number of successive transactions, shall be
contracted on the condition that the new controlling shareholder undertakes to make a public offer for the acquisition of the shares,
having as object the shares issued by the company held by the other shareholders, subject to the terms and conditions provided for by
the legislation and in the <I>Novo Mercado</I> Rules, so as to ensure them equal treatment as compared to the grantor.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CAP&Iacute;TULO XVIII</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>DELISTING FROM THE <I>NOVO MERCADO</I></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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->17<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 54</B> - The Company&rsquo;s delisting
from the Novo Mercado shall be resolved in compliance with the Novo Mercado Rules, allowing the dismissal of the public offer for the
acquisition of shares held by other shareholders, observing the procedures provided for in the referred Rules.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>CHAPTER XIX</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><B>MISCELLANEOUS</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 55</B> &ndash; The Company shall
have an institutional channel, which may be external to the Company, to receive complaints on corruption, fraud, illegal acts and irregularities
that damage the Company&rsquo;s equity and reputation, including violations of the Code of Conduct and Integrity.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 1</B> &ndash; The Company&rsquo;s
managers shall disclose and encourage the use of the institutional whistleblower channel, that will ensure the anonymity of the complainant
for undetermined period and the confidentiality of the investigation procedure and verification of responsibilities.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 2</B> &ndash; Under the
supervision of the Board of Directors, the state company shall establish a mechanism for a previous consultation to solve doubts on the
application of the Code of Conduct and Integrity and define approaches to concrete cases.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 56 </B>&ndash; Until April 30 of
each year, the Company will publish its table of jobs and functions, filled and vacant, related to the previous year, in compliance with
the provisions in Paragraph 5, of Article 115, of the Constitution of the State of S&atilde;o Paulo.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 57 </B>&ndash; The Company may sponsor
private pension plans, under the defined contribution scheme, to employees, being it incumbent upon the board of directors to resolve
on the conditions set forth in the respective regulations, as well as on the percentage of contribution of the sponsor, regular and extraordinary,
pursuant to the governing laws.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Sole Paragraph </B>&ndash; The Company
may remain as sponsor of the private pension plan under the defined benefit scheme, which is under extinguishment phase, forbidding the
entry of new participants, as well as the increase of respective benefits.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 58 </B>&ndash; In view of the provisions
in Article 101 of the S&atilde;o Paulo State Constitution, regulated by State Decree 56,677 of January 19, 2011, the engagement of attorney
liable for heading the Company's legal services shall be subject to the approval of the person appointed by the State Attorney General,
observing objective qualification, expertise and professional experience criteria.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 59 </B>&ndash; The Company shall
allow the direct dialogue of its attorneys with the State Attorney General or another State Attorney appointed thereby, aiming at ensuring
a continued and coordinated performance, observing the limits set forth in Article 101 of the State Constitution, in compliance with the
duties and prerogatives inherent to his professional activity</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify; background-color: white"><B>ARTICLE 60 </B>&ndash;
The appointment of persons that meet the ineligibility criteria established by the federal legislation is forbidden.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 1 </B>&ndash; The prohibition
in the head of this article is extended to appointments to commissions and designations for positions of trust.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Paragraph 2 </B>&ndash; The Company
will comply with Article 111-A of the Constitution of the State of S&atilde;o Paulo and the rules in State Decrees 57,970, of April 12,
2012, and 58,076, of May 25, 2012, as well as any future amendments.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 61 </B>&ndash; The admission of
employees by the Company is subject to the submission of a statement of the assets and amounts that make up their personal wealth, which
must be annually updated, as well as at the time of their termination.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt 21.3pt; text-align: justify"><B>Sole Paragraph </B>&ndash; The Company
shall observe the rules set forth in Article 13, Federal Law 8,429, of June 2, 1992, and its subsequent amendments, and in State Decree
41,865, of June 16, 1997, and its subsequent amendments, as well as any amendments that may be issued.</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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->18<!-- Field: /Sequence -->/19</FONT></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 CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, Sans-Serif">
  <TR>
    <TD ROWSPAN="5" STYLE="border: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><IMG SRC="sbs202105146k_002.jpg" ALT="Logo preto" STYLE="height: 68px; width: 51px"></TD>
    <TD COLSPAN="4" STYLE="border-top: #999999 1pt solid; border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 11pt"><B>Organizational Instrument</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: gray">Type</FONT><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">:</FONT></TD>
    <TD STYLE="border-right: #999999 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 6pt; color: #A6A6A6">Phase:</FONT></TD></TR>
  <TR>
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">Statutary</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">In effect</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Title:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Number and Version:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">ByLaws</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">IE0001 &ndash; V.71</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Issuer Department:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Approver:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">First Version as of:</TD>
    <TD STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Version Term as of:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">PI</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">EXTRAORDINARY GENERAL MEETING</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">November 1st, 1973</TD>
    <TD STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; text-align: center; font-size: 7pt; font-weight: bold">April 29, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-left: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Areas of influence (coverage):</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; font: 6pt Verdana, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-left: 5.4pt; color: gray">Processes:</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; border-left: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">SABESP</TD>
    <TD COLSPAN="2" STYLE="border-right: #999999 1pt solid; border-bottom: #999999 1pt solid; padding: 1pt 5.4pt; font-size: 7pt; font-weight: bold">---</TD></TR>
  </TABLE>
<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><B>ARTICLE 62</B>&ndash; The Company will comply
with Binding Precedent 13 of the Federal Supreme Court and State Decree 54,376, of May 26, 2009, as well as any future amendments that
may be issued.</P>




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

<P STYLE="font: bold 11pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"></P>

<!-- 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: right; width: 100%"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 10pt">&nbsp;Pag <!-- Field: Sequence; Type: Arabic; Name: PageNo -->19<!-- Field: /Sequence -->/19</FONT></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 14, 2021</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>Rui de Britto &#193;lvares Affonso</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: Rui de Britto &#193;lvares Affonso </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>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>sbs202105146k_002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
begin 644 sbs202105146k_002.jpg
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-:)=L<42A54>@ K__V0$!

end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
