<SEC-DOCUMENT>0001292814-23-002317.txt : 20230516
<SEC-HEADER>0001292814-23-002317.hdr.sgml : 20230516
<ACCEPTANCE-DATETIME>20230516100022
ACCESSION NUMBER:		0001292814-23-002317
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20230630
FILED AS OF DATE:		20230516
DATE AS OF CHANGE:		20230516

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:		23925846

	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>sbs20230515_6k.htm
<DESCRIPTION>6-K
<TEXT>
<HTML>
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<TITLE></TITLE>
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<DIV><FONT size=1></FONT>&nbsp;</DIV>

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

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

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

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

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

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

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

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

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

<DIV align=center>

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

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

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

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

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

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

<DIV align=center></DIV>

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

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

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

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<BR>

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

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

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<BR>

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

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

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

<P></P>

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

<P></P>

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

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



<!-- Field: Page; Sequence: 1 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Gray 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR><TD STYLE="width: 11%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center">&nbsp;<IMG SRC="sbs202305156k_001.jpg" ALT=""></TD><TD STYLE="width: 89%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 9pt"><B>EXECUTIVE BOARD INTERNAL CHARTER</B></FONT></TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.15pt 0 0; text-align: center"></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter I - PURPOSE</B></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 7.05pt 6pt 0; text-align: justify"><B>Article 1</B> This Internal Charter (&#8220;Charter&#8221;)
governs the structure, operation, and roles and responsibilities of the Executive Board (&#8220;Executive Board&#8221;) of Companhia de
Saneamento B&aacute;sico do Estado de S&atilde;o Paulo &#8211; Sabesp (&#8220;Company&#8221; or &#8220;Sabesp&#8221;), subject to the
provisions of the Bylaws and the legislation in force.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter II - COMPOSITION, INVESTITURE, AND TERM OF OFFICE</B></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 7.05pt 6pt 0; text-align: justify"><B>Article 2</B> The Executive Board consists
of 7 (seven) members, being the Chief Executive Officer, the People and Corporate Management Officer, the Chief Financial Officer and
Investor Relations Officer, the Engineering and Innovation Officer, the Regulation and New Business Officer, the Operation and Maintenance
Officer, and the Customer Officer, all of whom with a unified term of office of 2 (two) years, with the possibility of 3 (three) consecutive
re-elections.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 7.05pt 6pt 0; text-align: justify"><B>Paragraph 1</B> Except in the event of resignation
or dismissal, the term of office of the Executive Officers is automatically extended until their respective substitutes take office.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 7.05pt 6pt 0; text-align: justify"><B>Paragraph 2</B> The attributions and functions
of each Executive Officer shall be defined by the Board of Directors, as described in the Bylaws.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 7.05pt 6pt 0; text-align: justify"><B>Article 3</B> Without prejudice to the provisions
of the Bylaws, to take office, the Executive Officer shall:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">keep their personal data updated with the CEO&#8217;s Office;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify; padding-right: 7.05pt">present the personal documents that may eventually be required by the Company;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">III.</TD><TD STYLE="text-align: justify; padding-right: 7.05pt">declare to be free from any impediments under the terms of the legislation in force;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IV.</TD><TD STYLE="text-align: justify; padding-right: 7.05pt">provide all statements and information required by the Company, according to the
Bylaws, this Charter, relevant legislation and regulations, including those required by the Brazilian Securities and Exchange Commission;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">V.</TD><TD STYLE="text-align: justify; padding-right: 7.05pt">participate, upon taking office and annually, in the training sessions provided
for in Federal Law 13,303/2016;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VI.</TD><TD STYLE="text-align: justify">adhere to Sabesp&#8217;s Code of Conduct and Integrity;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VII.</TD><TD STYLE="text-align: justify; padding-right: 7.05pt">adhere to the Company&#8217;s policies and codes, including but not limited to
the Institutional Policy for the Disclosure of Material Acts and Facts and Trading of Securities Issued by Sabesp, as well as declare
the ownership and trading carried out with securities issued by the Company and the list of related people, according to Article 11 of
CVM Resolution 44/2021;</TD></TR></TABLE>


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    <DIV STYLE="margin-bottom: 6pt; border-bottom: Gray 1pt solid"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR STYLE="vertical-align: top"><TD STYLE="width: 84%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 8pt">Approved at the 987th Meeting of the Board of Directors &ndash; April 20, 2023</FONT></TD><TD STYLE="width: 1%; padding-right: 3.5pt; padding-left: 3.5pt; font: 10pt Times New Roman,serif; text-align: center">&nbsp;</TD><TD STYLE="width: 15%; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"> <P STYLE="font: 4pt Arial,sans-serif; margin: 0">&nbsp;</P><P STYLE="font: 7pt Verdana,sans-serif; margin: 12pt 3.6pt 12pt 0"><B>PAGE </B><!-- Field: Sequence; Type: Arabic; Name: PageNo -->1<!-- Field: /Sequence --> of 12</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR><TD STYLE="width: 11%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center">&nbsp;<IMG SRC="sbs202305156k_001.jpg" ALT=""></TD><TD STYLE="width: 89%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 9pt"><B>EXECUTIVE BOARD INTERNAL CHARTER</B></FONT></TD></TR></TABLE></DIV>
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<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VIII.</TD><TD STYLE="text-align: justify">submit a Declaration of Subsidiaries, under the Institutional Policy on Transactions with Related Parties
&#8211; PI 0032;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IX.</TD><TD STYLE="text-align: justify">sign the term of office within 30 (thirty) days of the election, under penalty of its ineffectiveness
(unless a justification is accepted by the body to which the member was elected), which shall contain:</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.35pt"></TD><TD STYLE="width: 21.3pt">(i)</TD><TD STYLE="text-align: justify">the indication of at least one domicile to receive summons and subpoenas of administrative and judicial
proceedings, related to acts of their management, and the change of the indicated domicile is allowed only in writing, under the Bylaws;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.35pt"></TD><TD STYLE="width: 21.3pt">(ii)</TD><TD STYLE="text-align: justify">their awareness and acceptance of the Arbitration clause, under the Novo Mercado Regulations and the Bylaws;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 28.35pt"></TD><TD STYLE="width: 21.3pt">(iii)</TD><TD STYLE="text-align: justify">the acceptance of the commitment with goals and results, under Article 23 of Federal Law 13,303/2016 and
the Bylaws;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">X.</TD><TD STYLE="text-align: justify">submit a statement of assets and valuables under the Bylaws, which shall be updated annually and at the
end of the term of office;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">XI.</TD><TD STYLE="text-align: justify">observe the provisions of Binding Precedent 13, of the Federal Supreme Court, and State Decree 54,376/2009;
and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">XII.</TD><TD STYLE="text-align: justify">in case of an Officer who, on the date of investiture, is a member of the Company&#8217;s staff, he/she
may choose his/her respective salary, under the terms of the Bylaws.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter III - VACANCIES AND REPLACEMENTS</B></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 4</B> In the absences or temporary impediments
of any Executive Officer, the Chief Executive Officer shall appoint another Executive Board member to assume the functions of the absent
Executive Officer, under the terms of the Bylaws.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Sole paragraph</B> The absent Executive Officer may indicate
the Executive Officer who will assume his/her duties, which shall be ratified by the Chief Executive Officer.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 5</B> In his/her absences and temporary impediments,
the Chief Executive Officer shall be replaced by the Executive Officer appointed by him/her and, if no indication is made, by the Chief
Financial Officer and Investor Relations Officer, under the terms of the Bylaws.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 6</B> In case of vacancy and until a successor
is elected, the Chief Executive Officer shall be replaced by the Chief Financial Officer and Investor Relations Officer, under the terms
of the Bylaws.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter IV - LEAVES</B></P>


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    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR><TD STYLE="width: 11%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center">&nbsp;<IMG SRC="sbs202305156k_001.jpg" ALT=""></TD><TD STYLE="width: 89%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 9pt"><B>EXECUTIVE BOARD INTERNAL CHARTER</B></FONT></TD></TR></TABLE></DIV>
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<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 7</B> The Executive Officers may request from
the Board of Directors an unpaid leave of absence, provided that it does not exceed 3 (three) months, which must be recorded in the minutes,
as provided for in the Bylaws.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter V - RESPONSIBILITIES</B></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 8</B> Without prejudice to the attributions defined
in the pertinent legislation and the Bylaws, the Executive Board is responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm"><FONT STYLE="font-size: 11pt">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-size: 11pt">complying with the Resolutions of the Board of Directors that delegate to
the Executive Board matters that are the responsibility of the Board of Directors, provided for in the Bylaws or Charter, provided that
they are not responsibilities defined in law, according to Article 139 of Federal Law 6,404/</FONT>19<FONT STYLE="font-size: 11pt">76;
and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">implementing the Institutional Policy of Corporate Risk Management and, whenever necessary, proposing
to the Board of Directors any needs for reviewing this policy, including because of changes in the risks to which the Company is exposed.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter VI - PREVIOUS ANALYSIS OF THE MATERIAL OF THE EXECUTIVE
BOARD&#8217;S MEETING (PRE-AGENDA)</B></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 9</B> The group composed of the Executive Secretariat
and representatives of the Company&#8217;s Offices shall meet at least 3 (three) days before the date scheduled for each Executive Board
meeting (pre-agenda), and the date of each meeting or agenda shall be defined by the Executive Secretariat, which will:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">analyze and submit the material to be included on the agenda;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">discuss the matters to be included on the agenda;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">III.</TD><TD STYLE="text-align: justify">ensure the standard of the documents and presentations; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IV.</TD><TD STYLE="text-align: justify">analyze the material to be distributed to the Executive Officers.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 1</B> The pre-agenda shall be coordinated by
the Executive Secretariat or, in its absence, by another member appointed by the Secretariat.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter VII - EXECUTIVE SECRETARIAT</B></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 10</B> The Company may have a secretariat linked
to the CEO&#8217;s Office and a secretariat linked to the corporate governance area, as decided by the Chief Executive Officer. In any
case, the meetings of the Executive Board shall be assisted by the head or a person appointed by the CEO&#8217;s Office and/or a member
of the corporate governance area, who may act as the executive secretary for the meetings (&#8220;Executive Secretariat&#8221;). The distribution
of functions of the Executive Secretariat, as applicable, shall be carried out as determined by the Chief Executive Officer.</P>


<!-- Field: Page; Sequence: 4 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Gray 1pt solid"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR STYLE="vertical-align: top"><TD STYLE="width: 84%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 8pt">Approved at the 987th Meeting of the Board of Directors &ndash; April 20, 2023</FONT></TD><TD STYLE="width: 1%; padding-right: 3.5pt; padding-left: 3.5pt; font: 10pt Times New Roman,serif; text-align: center">&nbsp;</TD><TD STYLE="width: 15%; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"> <P STYLE="font: 4pt Arial,sans-serif; margin: 0">&nbsp;</P><P STYLE="font: 7pt Verdana,sans-serif; margin: 12pt 3.6pt 12pt 0"><B>PAGE </B><!-- Field: Sequence; Type: Arabic; Name: PageNo -->3<!-- Field: /Sequence --> of 12</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR><TD STYLE="width: 11%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center">&nbsp;<IMG SRC="sbs202305156k_001.jpg" ALT=""></TD><TD STYLE="width: 89%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 9pt"><B>EXECUTIVE BOARD INTERNAL CHARTER</B></FONT></TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 11</B> The Executive Secretariat is responsible
for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">organizing the agenda of the Executive Board Meeting based on the requests of the Offices, including the
approval of the minutes of the meetings;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">submitting to the Chief Executive Officer the agenda and the documentation necessary to analyze the matters;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">III.</TD><TD STYLE="text-align: justify">issuing, on behalf of the Chief Executive Officer, a call notice for the meetings with the indication
of the date, time, venue, agenda, and respective documents;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IV.</TD><TD STYLE="text-align: justify">ensuring that the Executive Officers individually receive, 3 (three) days before the meeting, the documentation
containing the necessary information to allow the discussion and resolution of the matters to be addressed;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">V.</TD><TD STYLE="text-align: justify">calling, on behalf of the Chief Executive Officer, Company employees to participate in the meetings and
provide clarifications or information about the matters being analyzed;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VI.</TD><TD STYLE="text-align: justify">serving as a secretary and drawing up the minutes of the Executive Board Meetings;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VII.</TD><TD STYLE="text-align: justify">registering the Executive Board Resolutions and the respective classification;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VIII.</TD><TD STYLE="text-align: justify">submitting the list of the Executive Board Resolutions to the Audit Committee and Fiscal Council; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IX.</TD><TD STYLE="text-align: justify">adopting all the necessary measures for holding the Executive Board Meetings.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter VIII - EXECUTIVE BOARD MEETINGS</B></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 12</B> The Executive Board shall meet, ordinarily,
at least 2 (two) times per month and, extraordinarily, at the call of the Chief Executive Officer or any other two Executive Officers,
under the terms of the Bylaws.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 1</B> The Executive Board Meetings shall be
presided over by the Chief Executive Officer.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 2</B> The Executive Board Meetings shall be
installed with the presence of at least half of the acting Executive Officers, and each Executive Officer shall be entitled to 1 (one)
vote, and the matter that has the agreement of the majority of the attending Executive Officers shall be approved; in the case of a tie,
the proposal that has the vote of the Chief Executive Officer shall prevail, under the terms of the Bylaws.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 3</B> In the absence or impediment of the Chief
Executive Officer, the Executive Officer who is accumulating the Presidency shall preside over the meeting, and shall have the casting
vote.</P>


<!-- Field: Page; Sequence: 5 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Gray 1pt solid"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR STYLE="vertical-align: top"><TD STYLE="width: 84%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 8pt">Approved at the 987th Meeting of the Board of Directors &ndash; April 20, 2023</FONT></TD><TD STYLE="width: 1%; padding-right: 3.5pt; padding-left: 3.5pt; font: 10pt Times New Roman,serif; text-align: center">&nbsp;</TD><TD STYLE="width: 15%; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"> <P STYLE="font: 4pt Arial,sans-serif; margin: 0">&nbsp;</P><P STYLE="font: 7pt Verdana,sans-serif; margin: 12pt 3.6pt 12pt 0"><B>PAGE </B><!-- Field: Sequence; Type: Arabic; Name: PageNo -->4<!-- Field: /Sequence --> of 12</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR><TD STYLE="width: 11%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center">&nbsp;<IMG SRC="sbs202305156k_001.jpg" ALT=""></TD><TD STYLE="width: 89%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 9pt"><B>EXECUTIVE BOARD INTERNAL CHARTER</B></FONT></TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 4</B> Should an Executive Officer be cumulatively
responsible for another Office, only his/her vote shall be considered, according to Paragraph 3 of this Article 12.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 5</B> Extraordinary meetings, to address matters
of the Company&#8217;s interest, may be called with any advance notice.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 6</B> The Chief Executive Officer may, upon
calling the meeting, facilitate the participation of the Executive Officers by telephone, videoconference, or any other means of communication
that may ensure their effective participation and the authenticity of their vote; the Executive Officer who participates virtually in
the meeting shall be considered present and his/her vote shall be considered valid for all legal effects, without prejudice to the subsequent
drawing up and signing of the respective minutes, under the terms of the Bylaws.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 13</B> The meetings shall be held at the Company&#8217;s
headquarters; however, in exceptional cases and as required by the Chief Executive Officer, they may be held in another location.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 14</B> The Executive Board Meetings shall follow
the order established in the agenda and, as applicable, the Chief Executive Officer or whoever is presiding over the meeting in his/her
place may change the sequence of the agenda to give preference to urgent or strategic matters or for the better progress of the meeting.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 15</B> The Executive Officers may:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">invite, when necessary, internal and/or external people to take part in the Executive Board Meetings,
to provide clarifications about the matters being analyzed, without prejudice to Article 11-V of this Charter; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">propose the inclusion of an extraordinary item on the agenda during the meeting, and the Chair shall be
responsible for deciding whether or not to include it on the agenda.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 16</B> The meeting may be adjourned by decision
of the Chair and with the agreement of the majority of the Executive Officers present, and the venue, date, and time for its continuance
shall be defined, with no new call being necessary, provided that no new item is included on the agenda and that the quorum for the resolution
is verified.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Sole Paragraph </B>The adjournment and continuation of
the meeting shall be recorded in the minutes.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 17</B> All participants (called and invited) of
the Executive Board Meetings, due to their access to potentially material acts and facts, are subject to the provisions of the</P>


<!-- Field: Page; Sequence: 6 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Gray 1pt solid"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR STYLE="vertical-align: top"><TD STYLE="width: 84%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 8pt">Approved at the 987th Meeting of the Board of Directors &ndash; April 20, 2023</FONT></TD><TD STYLE="width: 1%; padding-right: 3.5pt; padding-left: 3.5pt; font: 10pt Times New Roman,serif; text-align: center">&nbsp;</TD><TD STYLE="width: 15%; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"> <P STYLE="font: 4pt Arial,sans-serif; margin: 0">&nbsp;</P><P STYLE="font: 7pt Verdana,sans-serif; margin: 12pt 3.6pt 12pt 0"><B>PAGE </B><!-- Field: Sequence; Type: Arabic; Name: PageNo -->5<!-- Field: /Sequence --> of 12</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR><TD STYLE="width: 11%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center">&nbsp;<IMG SRC="sbs202305156k_001.jpg" ALT=""></TD><TD STYLE="width: 89%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 9pt"><B>EXECUTIVE BOARD INTERNAL CHARTER</B></FONT></TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify">Institutional Policy of Material Acts and Facts and Trading
of Securities Issued by Sabesp &#8211; PI0022, and must sign the Adhesion Instrument (Exhibit 2) to said Policy.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 18</B> Minutes must be drawn up for each meeting
with the resolutions of the Executive Board, which, after being approved by the Executive Officers, shall be transcribed in the Book of
Minutes of the Executive Board&#8217;s Meetings, under the Bylaws.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 1</B> The minutes shall be clearly drafted,
and contain a record of the Executive Officers present and the resolutions taken, including abstentions and dissenting votes.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 2</B> Where applicable, an excerpt of the minutes
of the Executive Board Meeting shall be provided, which shall be signed by the person responsible for acting as a secretary of the minutes.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter IX - DUTIES</B></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 19</B> Subject to the provisions of the preceding
articles and the Bylaws, the members of the Executive Board have the following duties:</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 1</B> Under the terms of the Bylaws and by force
of this Charter, the Chief Executive Officer is responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">representing the Company, actively and passively, in court or out of court, and may appoint for this purpose
an attorney-in-fact with special powers, including powers to receive initial summons and notices, subject to the provisions of Article
19 of the Bylaws;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">institutionally representing the Company in its relations with governmental authorities, private entities,
and third parties in general;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">III.</TD><TD STYLE="text-align: justify">calling and presiding over the Executive Board Meetings;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IV.</TD><TD STYLE="text-align: justify">coordinating the Executive Board&#8217;s activities;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">V.</TD><TD STYLE="text-align: justify">issuing acts and resolutions that corroborate the Executive Board&#8217;s resolutions or resolutions arising
therefrom;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VI.</TD><TD STYLE="text-align: justify">coordinating the ordinary management of the Company, including the implementation of the guidelines and
compliance with resolutions taken by the General Meeting, Board of Directors, and Executive Board;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VII.</TD><TD STYLE="text-align: justify">coordinating the activities of the other Executive Officers;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VIII.</TD><TD STYLE="text-align: justify">promoting the organizational and functional structure of the Company;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IX.</TD><TD STYLE="text-align: justify">issuing normative instructions that regulate the activities among the several areas of the Company;</TD></TR></TABLE>


<!-- Field: Page; Sequence: 7 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Gray 1pt solid"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR STYLE="vertical-align: top"><TD STYLE="width: 84%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 8pt">Approved at the 987th Meeting of the Board of Directors &ndash; April 20, 2023</FONT></TD><TD STYLE="width: 1%; padding-right: 3.5pt; padding-left: 3.5pt; font: 10pt Times New Roman,serif; text-align: center">&nbsp;</TD><TD STYLE="width: 15%; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"> <P STYLE="font: 4pt Arial,sans-serif; margin: 0">&nbsp;</P><P STYLE="font: 7pt Verdana,sans-serif; margin: 12pt 3.6pt 12pt 0"><B>PAGE </B><!-- Field: Sequence; Type: Arabic; Name: PageNo -->6<!-- Field: /Sequence --> of 12</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR><TD STYLE="width: 11%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center">&nbsp;<IMG SRC="sbs202305156k_001.jpg" ALT=""></TD><TD STYLE="width: 89%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 9pt"><B>EXECUTIVE BOARD INTERNAL CHARTER</B></FONT></TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">X.</TD><TD STYLE="text-align: justify">coordinating, evaluating, and controlling the functions related to:</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0 6pt 1cm; text-align: justify">a) the CEO&#8217;s Office;</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0 6pt 1cm; text-align: justify">b) integrated planning, management, and business
organization;</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0 6pt 1cm; text-align: justify">c) communication;</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0 6pt 1cm; text-align: justify">d) ombudsman;</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0 6pt 1cm; text-align: justify">e) quality;</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0 6pt 1cm; text-align: justify">f) ESG - Environmental, Social and Corporate Governance;</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0 6pt 1cm; text-align: justify">g) digital transformation;</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0 6pt 1cm; text-align: justify">h) corporate strategy.</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">XI.</TD><TD STYLE="text-align: justify">responding for the compliance and risk management area, led by the statutory executive officer appointed
by the Board of Directors;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">XII.</TD><TD STYLE="text-align: justify">being administratively responsible for the audit area and the compliance and corporate risk management
area;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">XIII.</TD><TD STYLE="text-align: justify">institutional relations.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 2</B> The People and Corporate Management Officer
shall be responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">people management;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">property;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">III.</TD><TD STYLE="text-align: justify">legal services;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IV.</TD><TD STYLE="text-align: justify">compliance and risks, as appointed by the Board of Directors; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">V.</TD><TD STYLE="text-align: justify">procurement, supplies, and strategic hiring.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 3</B> The Chief Financial Officer and Investor
Relations Officer shall be responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">planning, collecting, and supplying financial funds;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">managing and following up on billing and collection;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">III.</TD><TD STYLE="text-align: justify">controllership;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IV.</TD><TD STYLE="text-align: justify">accounting;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">V.</TD><TD STYLE="text-align: justify">investor relations;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VI.</TD><TD STYLE="text-align: justify">operations in the capital markets and other financial operations;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VII.</TD><TD STYLE="text-align: justify">indebtedness control;</TD></TR></TABLE>


<!-- Field: Page; Sequence: 8 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Gray 1pt solid"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR STYLE="vertical-align: top"><TD STYLE="width: 84%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 8pt">Approved at the 987th Meeting of the Board of Directors &ndash; April 20, 2023</FONT></TD><TD STYLE="width: 1%; padding-right: 3.5pt; padding-left: 3.5pt; font: 10pt Times New Roman,serif; text-align: center">&nbsp;</TD><TD STYLE="width: 15%; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"> <P STYLE="font: 4pt Arial,sans-serif; margin: 0">&nbsp;</P><P STYLE="font: 7pt Verdana,sans-serif; margin: 12pt 3.6pt 12pt 0"><B>PAGE </B><!-- Field: Sequence; Type: Arabic; Name: PageNo -->7<!-- Field: /Sequence --> of 12</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR><TD STYLE="width: 11%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center">&nbsp;<IMG SRC="sbs202305156k_001.jpg" ALT=""></TD><TD STYLE="width: 89%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 9pt"><B>EXECUTIVE BOARD INTERNAL CHARTER</B></FONT></TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VIII.</TD><TD STYLE="text-align: justify">controlling the economic-financial and operational performance of his/her business units;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IX.</TD><TD STYLE="text-align: justify">shared services center; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">X.</TD><TD STYLE="text-align: justify">information technology.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 4</B> The Engineering and Innovation Officer
shall be responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">environment, planning and environmental control, excluding the activities related to ESG (Paragraph 1,
X, &#8216;f&#8217; above) and environmental compliance (Paragraph 7, VI below);</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">research, innovation, technological and operational development;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">III.</TD><TD STYLE="text-align: justify">quality control of water and sewage;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IV.</TD><TD STYLE="text-align: justify">loss management and energy;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">V.</TD><TD STYLE="text-align: justify">enterprises;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VI.</TD><TD STYLE="text-align: justify">expansion planning, projects, and cost engineering;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VII.</TD><TD STYLE="text-align: justify">CAPEX management, as well as expansion planning, projects, and cost engineering; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">V.</TD><TD STYLE="text-align: justify">special projects.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 5</B> The Operation and Maintenance Officer
shall be responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">operation and maintenance in the water collection, treatment, and distribution systems, including wholesale,
as well as sewage collection and treatment, and final disposal of residues and effluents;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">execution of commercial services, as well as the execution of other activities related to operation and
maintenance;</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 6</B> The Customer Officer shall be responsible
for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">commercial processes and customer relations;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">management and coordination of the fight against default;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">III.</TD><TD STYLE="text-align: justify">standards of commercial and customer relationship activities; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IV.</TD><TD STYLE="text-align: justify">commercial and customer services.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 7</B> The Regulation and New Business Officer
shall be responsible for:</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">I.</TD><TD STYLE="text-align: justify">management and review of costs and tariffs;</TD></TR></TABLE>


<!-- Field: Page; Sequence: 9 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Gray 1pt solid"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR STYLE="vertical-align: top"><TD STYLE="width: 84%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 8pt">Approved at the 987th Meeting of the Board of Directors &ndash; April 20, 2023</FONT></TD><TD STYLE="width: 1%; padding-right: 3.5pt; padding-left: 3.5pt; font: 10pt Times New Roman,serif; text-align: center">&nbsp;</TD><TD STYLE="width: 15%; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"> <P STYLE="font: 4pt Arial,sans-serif; margin: 0">&nbsp;</P><P STYLE="font: 7pt Verdana,sans-serif; margin: 12pt 3.6pt 12pt 0"><B>PAGE </B><!-- Field: Sequence; Type: Arabic; Name: PageNo -->8<!-- Field: /Sequence --> of 12</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR><TD STYLE="width: 11%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center">&nbsp;<IMG SRC="sbs202305156k_001.jpg" ALT=""></TD><TD STYLE="width: 89%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; font: 10pt Times New Roman,serif; padding-right: 3.55pt; padding-left: 3.55pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 9pt"><B>EXECUTIVE BOARD INTERNAL CHARTER</B></FONT></TD></TR></TABLE></DIV>
    <!-- Field: /Page -->

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">II.</TD><TD STYLE="text-align: justify">negotiation of contracts for the provision of water supply and sewage services in the municipalities;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">III.</TD><TD STYLE="text-align: justify">negotiation with the community and municipal governments to balance the interests of the customers and
the Company;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IV.</TD><TD STYLE="text-align: justify">institutional relations and compliance related to the granting authorities;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">V.</TD><TD STYLE="text-align: justify">contractual and institutional management;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VI.</TD><TD STYLE="text-align: justify">environmental compliance;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VII.</TD><TD STYLE="text-align: justify">regulatory inspection;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">VIII.</TD><TD STYLE="text-align: justify">legal and regulatory advisory services, excluding litigation, which is the responsibility of the legal
services of the People and Corporate Management Office, according to Paragraph 2, III;</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">IX.</TD><TD STYLE="text-align: justify">evaluation, development, and proposal of new regulated and non-regulated businesses; and</TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt Verdana,sans-serif; margin-top: 6pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1cm">X.</TD><TD STYLE="text-align: justify">management of interests and partnerships.</TD></TR></TABLE>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: center"><B>Chapter X - MISCELLANEOUS</B></P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Article 20</B> This revision of the Internal Charter of
the Executive Board was approved at the 987<SUP>th</SUP> Meeting of the Board of Directors, of April 20, 2023, effective as of April 28,
2023.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 1</B> This Charter shall be made available on
the websites of the Brazilian Securities and Exchange Commission (CVM) and the Company.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 6pt 0; text-align: justify"><B>Paragraph 2</B> This Charter may be amended whenever necessary
by a proposal of the Executive Board and must be approved at a Meeting of the Board of Directors.</P>

<P STYLE="font: 11pt Verdana,sans-serif; margin: 0"><B>Paragraph 3</B> The Internal Charter of the Executive Board, of October 18, 2018,
is hereby revoked.</P>



<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.15pt 0 0; text-align: center"></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.15pt 0 0; text-align: center"></P>

<!-- Field: Page; Sequence: 10; Options: NewSection; Value: 9 -->
    <DIV STYLE="margin-bottom: 6pt; border-bottom: Gray 1pt solid"><TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse"><TR STYLE="vertical-align: top"><TD STYLE="width: 84%; border: Black 1pt solid; font: 10pt Times New Roman,serif; padding-top: 12pt; padding-bottom: 12pt; text-align: center"><FONT STYLE="font-family: Verdana,sans-serif; font-size: 8pt">Approved at the 987th Meeting of the Board of Directors &ndash; April 20, 2023</FONT></TD><TD STYLE="width: 1%; padding-right: 3.5pt; padding-left: 3.5pt; font: 10pt Times New Roman,serif; text-align: center">&nbsp;</TD><TD STYLE="width: 15%; border: Black 1pt solid; padding-right: 3.5pt; padding-left: 3.5pt"> <P STYLE="font: 4pt Arial,sans-serif; margin: 0">&nbsp;</P><P STYLE="font: 7pt Verdana,sans-serif; margin: 12pt 3.6pt 12pt 0"><B>PAGE </B><!-- Field: Sequence; Type: Arabic; Name: PageNo -->9<!-- Field: /Sequence --> of 12</P></TD></TR></TABLE></DIV>
    <DIV STYLE="break-before: page; margin-top: 6pt">&nbsp;</DIV>
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<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B><U></U></B></FONT>

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B><U>SIGNATURE&nbsp;</U></B></FONT><FONT size=1>&nbsp;</FONT></DIV>

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

<DIV align=justify><FONT color=#000000 size=3 face="Times New Roman">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in the city S&#227;o Paulo, Brazil. <BR></FONT></DIV>

<DIV align=justify><FONT color=#000000 size=3 face="Times New Roman">Date:&nbsp;May 15, 2023</FONT></DIV>

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

<DIV align=center>

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



<TR>

   <TD vAlign=top width="50%" colSpan=3>

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

<TR>

   <TD height=16></TD>

   <TD height=16></TD>

   <TD height=16></TD></TR>

<TR>

   <TD vAlign=top align=left><FONT color=#000000 size=2 face="Times New Roman">By:</FONT></TD>

   <TD vAlign=bottom align=left>/s/&nbsp;&nbsp;<FONT STYLE="font-family: times new roman; font-size: small">Catia
Cristina Teixeira Pereira</FONT>&nbsp;&nbsp;&nbsp;&nbsp; <HR ALIGN="LEFT" COLOR="#000000" SIZE="1" NOSHADE></TD>

   <TD></TD></TR>

<TR>

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

   <TD vAlign=bottom width="53%" align=center>

   <DIV align=left><FONT STYLE="font-family: Times New Roman; font-size: x-small; color: #000000">Name: Catia
Cristina Teixeira Pereira</FONT></DIV>

   <DIV align=left><FONT color=#000000 size=2 face="Times New Roman">Title: Chief Financial Officer and Investor Relations Officer </FONT></DIV></TD>

   <TD></TD></TR></TABLE></DIV>

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

<P>&nbsp;</P>

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

<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B>FORWARD-LOOKING STATEMENTS </B></FONT></DIV>

<P align=justify><FONT size=2 face="'Times New Roman, Times, Serif'">This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations. </FONT></P>

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

</DIV>

<P></P>

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