<SEC-DOCUMENT>0001292814-21-004093.txt : 20211027
<SEC-HEADER>0001292814-21-004093.hdr.sgml : 20211027
<ACCEPTANCE-DATETIME>20211027082338
ACCESSION NUMBER:		0001292814-21-004093
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20211231
FILED AS OF DATE:		20211027
DATE AS OF CHANGE:		20211027

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:		211350768

	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>sbs20211025_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;October, 2021</B></FONT></DIV><FONT color=#000000 size=2 face="Times New Roman"><B>(Commission File No. 1-31317) </B></FONT></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: bold 13pt/115% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><U>MANUAL FOR SHAREHOLDERS&#8217;
PARTICIPATION AT THE</U></P>

<P STYLE="font: bold 13pt/115% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><U>EXTRAORDINARY SHAREHOLDERS&#8217;
MEETING</U></P>

<P STYLE="font: bold 14pt/115% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: center"><U>November 24, 2021</U></P>


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

<P STYLE="font: bold 12pt/150% Verdana, Helvetica, Sans-Serif; margin: 0; text-align: center; text-indent: 0in">PRESENTATION</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 7.1pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 7.1pt; text-align: justify">The shareholders of Companhia
de Saneamento B&aacute;sico do Estado de S&atilde;o Paulo - Sabesp (&#8220;<U>Company</U>&#8221;) are hereby convened, pursuant to Article
5, paragraph 1 of the Bylaws, to attend the Company&#8217;s <B>Extraordinary Shareholders&#8217; Meeting, </B>hosted at Rua Costa Carvalho,
N&ordm;&nbsp;300, in the city of S&atilde;o Paulo, scheduled to take place on <B>November 24, 2021, at 11:00 a.m.</B>, <B>exclusively
digital </B>pursuant to CVM Instruction 481, of December 17, 2009, as amended by CVM Instruction 622, of April 17, 2020, to resolve on
the following agenda:</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 0 7.1pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: center"><B>EXTRAORDINARY SHAREHOLDERS' MEETING</B></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: center"><B>&nbsp;</B></P>

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 39.3pt">&nbsp;</TD>
  <TD STYLE="width: 18pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 10pt">I.</FONT></TD>
  <TD><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 10pt">Elect a member to the Eligibility and Advisory Committee.</FONT></TD></TR>
</TABLE>


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    <TD STYLE="width: 39.3pt">&nbsp;</TD>
  <TD STYLE="width: 18pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 10pt">II.</FONT></TD>
  <TD><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 10pt">Elect a member of the Board of Directors for a mandate term
until the 2022 Annual General Meeting.</FONT></TD></TR>
</TABLE>


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<TD STYLE="width: 39.3pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 10pt">III.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 10pt">Classification
of a member of the Board of Directors as an independent member.</FONT></TD></TR></TABLE>

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<TD STYLE="width: 39.3pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 10pt">IV.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 10pt">Elect
a sitting member and its respective alternate member of the Fiscal Council, for a mandate term until the 2022 Annual General Meeting.</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 11pt/17pt Calibri, Helvetica, Sans-Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 39.3pt"></TD><TD STYLE="width: 18pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9.5pt">V.</FONT></TD><TD STYLE="text-align: justify"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9.5pt">Rectify the annual global
compensation of the Management and of the members of the audit committee and fiscal council for the fiscal year of 2021, approved at the
Annual Shareholders&#8217; Meeting of April 29, 2021.</FONT></TD></TR></TABLE>

<P STYLE="font: 10pt/150% Verdana, Helvetica, Sans-Serif; margin: 0; text-align: justify"><FONT STYLE="font-weight: normal">&nbsp;</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0; text-align: justify"><FONT STYLE="font-weight: normal">The relevant
documents to the subject are available to the shareholders on Sabesp&#8217;s Investor Relations website, https://ri.sabesp.com.br/en,
and at CVM, on the world wide web, on the term and manner of the CVM Rule N&ordm; 481/2009. </FONT></P>

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

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0; text-align: justify">In order to help you decide on the matter, we
recommend a careful Reading of the Management Proposal.</P>

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

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0; text-align: justify"><FONT STYLE="font-weight: normal">Possible doubts
or clarifications on the agenda&#8217;s particular matter can be resolved or obtained with the Investor Relations Department, by the following
email sabesp.ri@sabesp.com.br.</FONT></P>

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<P STYLE="font: bold 12pt/150% Verdana, Helvetica, Sans-Serif; margin: 0; text-align: center; text-indent: 0in">GUIDELINES FOR PARTICIPATION
AT EXTRAORDINARY SHAREHOLDERS&#8217; MEETING</P>

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

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">Due
to the impacts arising from the new coronavirus (&#8220;COVID-19&#8221;) and the protective measures recommended by the health authorities,
especially on dislocations and gathering restrictions, the Extraordinary Shareholders&#8217; Meeting (&#8220;ESM&#8221;) will be held
exclusively through a digital platform, in which shareholders can participate directly, through an attorney-in-fact, duly ordained, or
by submitting a Remote Voting Form (&#8220;RVF&#8221;). </FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">Shareholders
who wish to attend the meeting in real time must do so through the Zoom platform, under the terms described below.</FONT></P>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 10pt 0; text-align: justify; text-indent: 0.25in">(i) <U>Remote
Participation in Digital Platform</U></P>

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">(a)</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">Shareholder
Personal Participation</FONT></TD></TR></TABLE>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 10pt 0.25in; text-align: justify"><FONT STYLE="font-weight: normal">Shareholders
can participate in the ESM remotely, through an eletronic platform provided by the Company, making use of audio and video. The shareholder
who intends to participate remotely, through digital form, shall send the documents listed below, as applicable.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 10pt 0.25in; text-align: justify"><FONT STYLE="font-weight: normal">The
listed documents shall be sent until 11:00 a.m. on November 23, 2021, to the Company&#8217;s headquarters, located at Rua Costa Carvalho,
300, S&atilde;o Paulo, SP, CEP 05429-900, or to the email (sabesp.ri@sabesp.com.br) care of <I>Superintend&ecirc;ncia de Rela&ccedil;&otilde;es
com Investidores</I>.</FONT></P>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 10pt 0.25in; text-align: justify"><U>Individuals</U></P>

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">I.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">Personal
identity document with a photo (RG, RNE, CNH or any professional class card officially recognized in Brazil); and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 16pt/150% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">II.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">Statement
issued by the firm which provides bookkeeping services or by the Custodian Institution, with amount of shares duly held, with a term not
above three (3) days before the meeting takes place.</FONT></TD></TR></TABLE>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 10pt 0.25in; text-align: justify"><U>Legal Entities</U></P>

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">I.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">Copy
of the Company&#8217;s Bylaws or partnership agreement in effect and corporate documentation with evidence of powers for shareholder legal
representation (election of directors and officers and/or proxy, and in case of a participation by proxy there will be waived to display
the principal&#8217;s notarization);</FONT></TD></TR></TABLE>

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<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">II.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">Personal
identity document with a photo (RG, RNE, CNH or any representative&#8217;s professional class card officially recognized in Brazil); and</FONT></TD></TR></TABLE>


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<P STYLE="margin-top: 0; margin-bottom: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 16pt/150% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">III.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">Statement
issued by the firm which provides bookkeeping services or by the Custodian Institution, with amount of shares duly held, with a term not
above three (3) days before the meeting takes place.</FONT></TD></TR></TABLE>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 7.05pt 10pt 0; text-align: justify"><U>Investment Funds:</U></P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 16pt/150% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">I.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">Copy
of the internal consolidated regulation and bylaws or articles of organization related to the fund&#8217;s administration or management,
as appropriate, together with the corporate documentation with evidence of powers for administrator or manager legal representation, as
appropriate (election of directors and/or proxy, considering that in case of participation by proxy the principal notarization will be
waived);</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 16pt/150% Times New Roman, Times, Serif; margin-top: 12pt; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">II.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">Personal
identity document with a photo (RG, RNE, CNH or any representative&#8217;s professional class card officially recognized in Brazil); and</FONT></TD></TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 16pt/150% Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 10pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">III.</FONT></TD><TD STYLE="text-align: justify; padding-right: 7.05pt"><FONT STYLE="font-family: Verdana, Helvetica, Sans-Serif; font-size: 9pt; font-weight: normal">Statement
issued by the firm which provides bookkeeping services or by the Custodian Institution, with amount of shares duly held, with a term not
above three (3) days before the meeting takes place.</FONT></TD></TR></TABLE>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 12pt 7.05pt 10pt 0; text-align: justify"><FONT STYLE="font-weight: normal">The
Company waives the need for the notarization of the abovementioned documents, as well as notarization and consular certification or amendments
of documents signed overseas, for acceptance of the </FONT>Remote Voting Form (&#8220;RVF&#8221;).</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 12pt 7.05pt 10pt 0; text-align: justify"><FONT STYLE="font-weight: normal">The
Company waives the need for sworn translation concerning documents originally conceived in Portuguese, English or Spanish, or one that
might be followed by a translation in those languages.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">(b)
Participation through an attorney-in-fact</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">If the
shareholder wishes to be represented in the ESM by an attorney-in-fact, he/she must send the Company, in addition to the documents indicated
in item (i) above, the power-of-attorney letter, granted less than one year from the meeting date, pursuant to article 126, paragraph
1, of the Brazilian Corporations Law, with notarized signature (for physical form) or having been signed by a digital certificate issued
by certifying authorities linked to ICP-Brasil (for digital form), and accompanied by the identity document and/or corporate acts of the
attorney-in-fact, as the case may be. </FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal"><U>(c)
Information on Accreditation</U></FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">After
receiving and checking the documents provided by the shareholders in the terms of the above items (a) and (b), the Company will send to
the shareholder the data for participation through digital platform in the ESM. The shareholder who participates in the ESM through digital
platform can exercise his or her respective voting rights and shall be considered present and signor of the minutes in line with article
21-V, of CVM Instruction 481.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">The
shareholder who does not receive the link within twenty-four (24) hours of the meeting, i.e., until 11:00 a.m. on November 23, 2021, must
reach the <I>Superintend&ecirc;ncia de Rela&ccedil;&otilde;es com Investidores (Investor
Relations) no less than four (4) hours from the beginning of the ESM, for the provision of remote support. </I></FONT></P>


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<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">In sequence
of accreditation, the participant commits to (i) use the particular link only and exclusively to participate in the ESM, (ii) not transfer
or disclose, in whole or in part, the particular link to any third party, who may or may not be a shareholder, being a non-transferable
link, and (iii) not record or reproduce, in whole or in part, not even transfer to any third party, who may or may not be a shareholder,
the content or any information exchanged through virtual means, during the realization of the ESM.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">Every
shareholder, representative or attorney-in-fact, who enters in the ESM by digital platform shall go through a visual verification in order
to confirm the validity of his/her participation. In this verification process, the participant will be requested to exhibit the identification
document on his or her device camera, in a way that the photo and information of the due document might be visible and legible.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">Throughout
the whole meeting, the participant must keep his or her camera on, as well as stand in front of it, in a way to maintain him or herself
visible during the whole meeting. The participant who turns off his or her camera or be absent in front of it can be notified to come
back or reconnect his or her device. In case the participant does not answer the request, he or she might be removed from the videoconference.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">In a
way to streamline interaction of the attendees, the audio of the participants of the videoconference will be automatically muted. They
can express themselves by (i) messages, at any time or (ii) audio, through a previous request by message for due audio liberation.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">The
videoconference will start thirty (30) minutes before the beginning of the meeting, in order to advance the process of accreditation.
The Company directs that participants who opt for virtual participation to access the link to enter the ESM with thirty (30) minutes.</FONT></P>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify">(ii) <U>Participation by Remote Voting
Form</U></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">Alternatively,
shareholders may participate in the Remote Voting Form (&#8220;RVF&#8221;), this date onward, by: (a) sending the Remote Voting Form (&#8220;RVF&#8221;)
with the voting instructions to their custodians, if the shares are deposited in a central depository; (b) sending the Remote Voting Form
(&#8220;RVF&#8221;) with the voting instruction to Banco Bradesco S.A., the financial institution hired by the Company for bookkeeping
services, if shares held are not deposited with a central depository; or (c) sending the Remote Voting Form (&#8220;RVF&#8221;), available
on the CVM (www.cvm.gov.br) and the Company's (https://ri.sabesp.com.br/en) websites, directly to the Company, by mail or e-mail to the
addresses indicated on the Remote Voting Form (&#8220;RVF&#8221;). Submitting the Remote Voting Form (&#8220;RVF&#8221;) by e-mail does
not exempt the shareholder to send, within the deadline period, the physical copies to the Company.</FONT></P>


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<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">Voting
instructions must be received by the custodian, bookkeeping agent or the Company, as the case may be, by up to 7 (seven) days prior to
the date of the ESM, if a shorter period is not established by the service providers, and when sending directly to the Company, the Remote
Voting Form (&#8220;RVF&#8221;) must be duly filled out, initialed and signed, with notarized signatures being waived, and must be accompanied
by the other Required Documents for Registration indicated in items (i) and (ii), as applicable, and as detailed in the remote voting
form. </FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">If discrepancies
are identified between the Remote Voting Form (&#8220;RVF&#8221;) received directly by the Company and voting instructions contained in
the consolidated voting map sent by the bookkeeping agent for the same CPF or CNPJ numbers, the voting instructions in the voting map
of the bookkeeper agent shall prevail, and the form received directly by the Company shall be disregarded. </FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">During
the voting period, shareholders may change their voting instructions as many times as they wish and the final voting form submitted will
be considered on the Company's voting map. </FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">Once
the voting period has ended, shareholders will not be able to change the voting instructions already submitted. If a shareholder wishes
to change his/her vote after the deadline period, he/she must personally participate in the ESM, bearing the Required Documents for Registration
listed in item (i) above, and request that the voting instructions submitted through the remote voting form be disregarded.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">Shareholder
who has already submitted their Remote Voting Form (&#8220;RVF&#8221;) may also request registration for the online ESM, provided this
request is made in accordance with the requirements and deadline period described in the ESM Manual. In this case, if the shareholder
wishes to vote again during the meeting, all voting instructions received through the remote voting form identified with his/her individual
or corporate taxpayer's ID (CPF/CNPJ) number will be disregarded. </FONT></P>

<P STYLE="font: bold 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify">Information on Participation</P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">The
Company requests shareholders to ensure that electronic devices to be used to join the ESM are compatible with the meeting's digital platform
within 30 minutes prior to the start of the ESM. Questions on how to access or use the digital platform may be sent to sustentacaoci@sabesp.com.br
or by calling (11) 3388-8172.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">The
Company will not be responsible for operational or connection problems that the shareholder may face, nor any other issues that may make
it difficult or impossible for the shareholder to join the electronic ESM due to incompatibility or defects of their electronic devices.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">In line
with article 21-C, paragraph 1, item II, of CVM Instruction n&ordm; 481, of December 17, 2009 (&#8220;CVM Instruction 481&#8221;), the
ESM will be fully recorded and, pursuant to article 21-V, paragraph 1, of CVM Instruction 481, the duly registered shareholder who joins
the ESM through the electronic platform will be considered present and subscriber to the meeting's minutes.</FONT></P>


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<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">&nbsp;</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">The
documents and information required to participate and vote in the ESM, either through the Remote Voting Form (&#8220;RVF&#8221;) or digitally,
were are available to shareholders, in the form provided for in ICVM 481, and can be accessed on the Company's investor relations website
(https://ri.sabesp.com.br/en), as well as the websites of the Brazilian Securities and Exchange Commission (www.cvm.gov.br) and B3 SA
- Brasil, Bolsa, Balc&atilde;o (http://www.b3.com.br).</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">Lastly,
it&#8217;s important to highlight that personal data and required documents for accreditation and participation in the meeting will be
exclusively used for this purpose and its handling is justified within the terms of Article 7, II, Law N&ordm; 13,709/2018 (fulfilling
legal obligation), founded on Law N&ordm; 6,404/76 and correlated norms.</FONT></P>

<P STYLE="font: 9pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 12pt; text-align: justify"><FONT STYLE="font-weight: normal">&nbsp;</FONT></P>

<P STYLE="font: 10pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/150% Verdana, Helvetica, Sans-Serif; margin: 6pt 0 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt/150% Verdana, Helvetica, Sans-Serif; margin: 0 0 10pt; text-align: justify">&nbsp;</P>



<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 0.5pt; text-align: justify"></P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 0.5pt; text-align: justify">&nbsp;</P>

<P STYLE="font: 11pt Arial, Helvetica, Sans-Serif; margin: 0 0 12pt 0.5pt; text-align: justify"></P>

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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;October 25, 2021</FONT></DIV>

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

<DIV align=center>

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



<TR>

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

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

<TR>

   <TD height=16></TD>

   <TD height=16></TD>

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

<TR>

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

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

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