<SEC-DOCUMENT>0001292814-23-001250.txt : 20230329
<SEC-HEADER>0001292814-23-001250.hdr.sgml : 20230329
<ACCEPTANCE-DATETIME>20230329152959
ACCESSION NUMBER:		0001292814-23-001250
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20230331
FILED AS OF DATE:		20230329
DATE AS OF CHANGE:		20230329

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:		23774820

	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>sbs20230328_6k1.htm
<DESCRIPTION>FORM 6-K
<TEXT>
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<DIV><FONT size=1></FONT>&nbsp;</DIV>

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

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

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

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

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

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

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

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

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

<DIV align=center>

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

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

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

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

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

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

<DIV align=center></DIV>

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

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

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

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<BR>

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

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

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<BR>

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

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

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

<P></P>

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

<P></P>

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


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<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: center"><B>COMPANHIA DE SANEAMENTO B&Aacute;SICO
DO ESTADO DE S&Atilde;O PAULO &ndash; SABESP</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: center">PUBLICLY HELD COMPANY</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: center">Corporate Taxpayer&rsquo;s ID (CNPJ):
43.776.517/0001-80</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: center">Company Registry (NIRE): 35.3000.1683-1</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: center">&nbsp;</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: center"><B>CALL NOTICE</B></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 7.1pt; text-align: justify">Companhia de Saneamento B&aacute;sico
do Estado de S&atilde;o Paulo - Sabesp (&ldquo;<U>Company</U>&rdquo;), located at Rua Costa Carvalho, n&ordm; 300, in the City and State
of S&atilde;o Paulo, hereby invites its Shareholders, according to paragraph 1 of article 5 of its Bylaws, to participate in the Company&rsquo;s
<B>Annual and Extraordinary Shareholders&rsquo; Meetings </B>(&ldquo;<U>AESM</U>&rdquo; or &ldquo;<U>Meetings</U>&rdquo;), to be held
on <B>April 28, 2023, at 11:00 a.m., in an exclusively digital format</B>, through the Zoom Meetings platform, according to Resolution
81 of the Brazilian Securities and Exchange Commission (&ldquo;CVM&rdquo;), of March 29, 2022, as amended (&ldquo;<U>CVM Resolution 81/22</U>&rdquo;),
to resolve on the following agenda:</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 7.1pt 6pt 14.2pt; text-align: center"><B>ANNUAL SHAREHOLDERS&rsquo;
MEETING</B></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">I.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Examine
the management accounts, discuss, and vote on the Company&rsquo;s financial statements for the fiscal year ended December 31, 2022, accompanied
by the Annual Management Report, Independent Auditors&rsquo; Report, Fiscal Council&rsquo;s Opinion, and Summarized Annual Report of the
Audit Committee.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">II.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Resolve
on the allocation of the net income for the fiscal year ended December 31, 2022, and the distribution of dividends.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">III.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Set the
number of members to compose the Fiscal Council for a term of office until the 2024 Annual Shareholders&rsquo; Meeting.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">IV.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Elect
the members of the Fiscal Council for a term of office until the 2024 Annual Shareholders&rsquo; Meeting.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: center"><B>EXTRAORDINARY SHAREHOLDERS'
MEETING</B></P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">I.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Elect
the members of the Board of Directors to fulfill the remaining term of office until the Annual Shareholders&rsquo; Meeting to be held
in 2024, under paragraph 3 of article 141 of Law 6,404/76, and appoint the Chair of the Board of Directors.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">II.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Resolve
on the eligibility of the independent members of the Board of Directors regarding the rules established in the Novo Mercado Regulations
of B3 S.A. &ndash; Brasil, Bolsa, Balc&atilde;o. </FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">III.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Appoint
members for the Audit Committee.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 0 0 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">IV.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Set the
overall annual compensation of management, audit committee members, and fiscal council members for the 2023 fiscal year.</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: justify">&nbsp;</P>


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<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">V.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Amend
the Company&rsquo;s Bylaws to include the following changes: (<B>a</B>) amend article 15 to (<B>a.1</B>) provide for the composition of
the Executive Board of seven members; and (<B>a.2</B>) include paragraph 2, attributing to the Board of Directors the power to define
the duties and functions of each Executive Officer through the Executive Board&rsquo;s Internal Charter; (<B>b</B>) amend the single paragraph
of article 16, article 17, and item I of article 21 to adjust the wording, indicating that the Executive Officer responsible for the financial
area is also the investor relations officer; and <B>(c)</B> amend article 20, excluding paragraphs three to six, maintaining the powers
of the CEO, under the terms of the current paragraph two, regulations on the duties and functions of the other Executive Officers will
be defined by the Board of Directors, in the Internal Charter;</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: justify">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/150% Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.05pt"></TD><TD STYLE="width: 14.15pt">VI.</TD><TD STYLE="text-align: justify; padding-right: 7.05pt">Consolidate the Company&rsquo;s Bylaws.</TD></TR></TABLE>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 14.2pt; text-align: justify">&nbsp;</P>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><I>Shareholder Information:</I></P>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><FONT STYLE="font-weight: normal">The
Meetings will be held exclusively online, according to CVM Resolution 81/22, and Shareholders are allowed to participate </FONT>(i) <FONT STYLE="font-weight: normal">in
person or by a proxy, through the electronic platform at the time defined for the AESM, or </FONT>(ii) <FONT STYLE="font-weight: normal">by
sending voting instructions before the AESM is held, through the Remote Voting Form (&ldquo;<U>RVF</U>&rdquo;).</FONT></P>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify">The rules and procedures for shareholders&rsquo;
participation in the Meetings are detailed in the <U>Manual for Participation in the Meeting</U>, and the information about the matters
to be resolved at the Meetings is detailed in the Management Proposal, both of which are available on the Company&rsquo;s Investor Relations
website (https://ri.sabesp.com.br/), and on the websites of B3 (www.b3.com.br) and the Brazilian Securities and Exchange Commission (https://www.gov.br/cvm/pt-br).</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: bold 13pt/150% Times New Roman, Times, Serif; margin-top: 6pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 25.1pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">I.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Participation through the electronic
platform</FONT></TD></TR></TABLE>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><FONT STYLE="font-weight: normal">Shareholders
who wish to participate in the Meetings via the digital platform made available by the Company shall send the documents necessary for
participation, as described in the Manual for Participation in the Meeting, </FONT><U>by 11:00 a.m. of April 25, 2023,</U> <FONT STYLE="font-weight: normal">to
the Company&rsquo;s headquarters, at Rua Costa Carvalho, n&ordm; 300, CEP: 05429-900, in the City and State of S&atilde;o Paulo, or email
them to sabesp.ri@sabesp.com.br, to the care of the <I>Superintend&ecirc;ncia de Capta&ccedil;&atilde;o de Recursos e Rela&ccedil;&otilde;es
com Investidores</I>. </FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><FONT STYLE="font-weight: normal">It should
be noted that the personal data and documents requested for accreditation and participation in the Meetings will be used exclusively for
this purpose and will be processed according to article 7, item II, of Law 13,709/2018 (compliance with legal obligations), based on Brazilian
Corporations Law and correlating regulations.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><FONT STYLE="font-weight: normal">After
analyzing and validating the documents, the Company will email Shareholders the access link to the AESM, including specific access instructions.
Access to the AESM will be restricted to Shareholders and/or their representatives or proxies accredited within the term defined by the
Company, who will receive an individual invitation with specific instructions to access the digital platform.</FONT></P>




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<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: bold 13pt/150% Times New Roman, Times, Serif; margin-top: 6pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 25.1pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">II.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Participation through Remote
Voting Form </FONT></TD></TR></TABLE>
<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><FONT STYLE="font-weight: normal">If
Shareholders decide to participate in the AESM through a remote voting form, they must </FONT>(a) <FONT STYLE="font-weight: normal">send
filling instructions of the Remote Voting Form to service providers for the collection and transmission of instructions for filling out
these documents (custody agents or bookkeeping agent of the shares issued by the Company), provided that such instructions are received
within up to seven (7) days before the Meetings; or </FONT>(b) <FONT STYLE="font-weight: normal">send the Remote Voting Form directly
to the Company, </FONT><U>provided that the instructions are received within seven (7) days before the AESM</U><FONT STYLE="font-weight: normal">,
and any Remote Voting Forms received by the Company after this deadline will be disregarded. </FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><FONT STYLE="font-weight: normal">The submission
of the Remote Voting Form to the custodian or bookkeeping agent shall comply with the applicable rules and procedures indicated by them,
while the <U>Remote Voting Forms directly sent to the Company shall be accompanied by the documents indicated in the Manual for Participation
in the Meeting</U> and addressed to the Company&rsquo;s headquarters, at Rua Costa Carvalho, No. 300, in the city and state of S&atilde;o
Paulo, or emailed to sabesp.ri@sabesp.com.br, to the care of the <I>Superintend&ecirc;ncia de Capta&ccedil;&atilde;o de Recursos e Rela&ccedil;&otilde;es
com Investidores</I>.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><FONT STYLE="font-weight: normal">Shareholders
who send their Remote Voting Forms may participate in the Meetings via the digital system. However, should they exercise their voting
right in real-time at the respective Meeting, their Remote Voting Forms will be fully disregarded and the votes cast during the Meeting
will be considered valid.</FONT></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: bold 13pt/150% Times New Roman, Times, Serif; margin-top: 6pt; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 25.1pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">III.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt">Requests for a Multiple Vote
</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><FONT STYLE="font-weight: normal">To request
the adoption of a multiple vote for the election of the Board of Directors&rsquo; members, according to CVM Resolution 70, of March 22,
2022, the applicants must represent at least 5% of the Company&rsquo;s voting capital and may exercise this option up to 48 hours before
the Meetings. </FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify"><FONT STYLE="font-weight: normal">The Company
emphasizes the importance that any requests for a multiple vote be made in advance to facilitate their processing by the Company and the
participation of other Brazilian and foreign Shareholders. </FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 12pt 7.1pt 0 0; text-align: center">S&atilde;o Paulo, March 27, 2023.</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: center">&nbsp;</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: center">Mario Engler Pinto Junior</P>

<P STYLE="font: 9pt Verdana, Helvetica, Sans-Serif; margin: 0 7.1pt 0 0; text-align: center">Chair of the Board of Directors</P>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0 14.2pt; text-align: justify"></P>

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<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;March 28, 2023</FONT></DIV>

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

<DIV align=center>

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



<TR>

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

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

<TR>

   <TD height=16></TD>

   <TD height=16></TD>

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

<TR>

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

   <TD vAlign=bottom align=left>/s/&nbsp;&nbsp;<FONT style="FONT-FAMILY: times new roman" size=3>Catia Cristina Teixeira Pereira</FONT>&nbsp;&nbsp;&nbsp;&nbsp;

   <HR align=left color=#000000 SIZE=1 noShade>

</TD>

   <TD></TD></TR>

<TR>

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

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

   <DIV align=left><FONT color=#000000 size=2 face="Times New Roman">Name: Catia Cristina Teixeira Pereira </FONT></DIV>

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

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

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

<P>&nbsp;</P>

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

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

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

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

</DIV>

<P></P>

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