<SEC-DOCUMENT>0001292814-18-000378.txt : 20180209
<SEC-HEADER>0001292814-18-000378.hdr.sgml : 20180209
<ACCEPTANCE-DATETIME>20180209165158
ACCESSION NUMBER:		0001292814-18-000378
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180331
FILED AS OF DATE:		20180209
DATE AS OF CHANGE:		20180209

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:		18592518

	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>sbs20180103_6k.htm
<DESCRIPTION>SBS20180103_6K
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<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>

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

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<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>

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<DIV><FONT color=#000000 size=2 face="Times New Roman"><B>For&nbsp;January, 2018</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 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>

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<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>

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<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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<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 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>

<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="TEXT-ALIGN: right; MARGIN: 0in 17.85pt 6pt 0in" align=right><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif><FONT size=3 face="Times New Roman">&nbsp;</FONT><FONT size=3 face=Verdana>Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo</FONT><FONT size=3 face="Times New Roman"> <BR></FONT>Board of Directors of&nbsp;</FONT></FONT><FONT face=verdana,sans-serif><FONT><FONT lang=EN-US style="FONT-SIZE: 1pt; LINE-HEIGHT: normal" face=verdana,sans-serif>&nbsp;</FONT></FONT></FONT><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Sabesp</FONT></FONT></P></TD></TR></TABLE>

<P style="TEXT-ALIGN: center"><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 115%" face=verdana,sans-serif><STRONG>COMPANHIA DE SANEAMENTO B&#193;SICO DO ESTADO DE S&#195;O PAULO - SABESP</STRONG><BR><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 115%" face=verdana,sans-serif>Corporate Taxpayer&#8217;s ID (CNPJ) No. 43.776.517/0001-80<BR>State Registry (NIRE) 35.3000.1683-1</FONT></FONT></P></FONT></DIV>

<P style="TEXT-ALIGN: center; MARGIN: 0in 11.05pt 0pt 0in" align=center><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif></FONT></B>&nbsp;</P>

<P style="TEXT-ALIGN: center; MARGIN: 0in 11.05pt 0pt 0in" align=center><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>SUMMARY OF THE MINUTES OF THE EIGHT HUNDRED AND FIFTY-FIFTH MEETING OF THE </FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif><BR></FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>BOARD OF DIRECTORS</FONT></B></P>

<P style="TEXT-ALIGN: center; MARGIN: 0in 11.05pt 0pt 0in" align=center><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif></FONT></B>&nbsp;</P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt"><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>On the 20<SUP>th</SUP> day of the month of December 2017, at 6:00 p.m., extraordinarily convened by the Chairman of the Board of Directors, Benedito Pinto Ferreira Braga Junior, pursuant to the provisions of Article 12, Paragraph 4, of the Bylaws, the undersigned members of the Board of Directors of Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo - SABESP became aware of and resolved on, through electronic mail, the sole subject of the agenda: &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Approval of the Conditions Applicable to the 22<SUP>nd</SUP> Issue of Simple Debentures</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;, based on the Resolution of the Executive Board No. 0307/2017, of December 20, 2017, the Internal Notice FI 069/2017, of December 18, 2017, and the powerpoint presentation, with these documents duly distributed to the Board Members and filed in the electronic folder of this meeting. Pursuant to Article 59, Paragraph 1, of Law No. 6404, of December 15, 1976, as amended (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Brazilian Corporation Law</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;), and pursuant to Article 13, Items X and XIII, of the Bylaws, the conditions applicable to the 22<SUP>nd</SUP> issue of simple debentures, not convertible into shares, of the unsecured type, in up to three (3) series, for public distribution with restricted efforts, </FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>were unanimously approved</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>, as set forth in CVM Instruction No. 476, of January 16, 2009, as amended (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Debentures</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;, &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Offer</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221; or &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Issue</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221; and &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>CVM Instruction No. 476</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;, respectively), as described below:</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=PT-BR style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>1.</FONT></B><B><FONT lang=PT-BR style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=PT-BR style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Issuer:</FONT></B><FONT lang=PT-BR style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo &#8211; SABESP.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>2.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Total Amount of the Issue:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The total amount of the Issue will be of seven hundred and fifty million reais (R$750,000,000.00) on the Issue Date (as defined below), subject to the possibility of partial distribution under the terms of the Debentures Indenture (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Indenture</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;). </FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>3.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Number of Series:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> </FONT><FONT lang=EN-US style="FONT-SIZE: 9pt; LAYOUT-GRID-MODE: line; LINE-HEIGHT: 150%" face=verdana,sans-serif>The Issue will be carried out in up to three (3) series, and the existence of each series and the number of Debentures to be allocated in each Series of the Issue will be defined according to the demand for the Debentures, as ascertained in the Bookbuilding Procedure and according to the distribution plan of the Offer. </FONT><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>The allocation of the Debentures in the series of the Issue will be carried out in the system of communicating vessels, observing that the number of Debentures in any of the series must be deducted from the total number of Debentures, therefore limiting the number of Debentures to be allocated in the other series. The partial distribution of Debentures will be allowed, considering that the Issue of Debentures is subject to the issue of at least five hundred thousand (500,000) Debentures of the First Series (as defined below) and/or Debentures of the Second Series (as defined below), considered together. The conditions for the subscription by Professional Investors will be described in the Indenture, given the possibility of partial distribution of </FONT>


<FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>the Debentures, pursuant to Article 31 of CVM Instruction No. 400, of December 29, 2003, as amended. The Debentures not placed will be canceled by the Issuer, therefore the total amount of the Issue and the number of Debentures will be adjusted through an amendment to the Indenture, duly ratified by a corporate act of the Board of Directors of the Issuer, without the need for approval of the holders of the Debentures (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Debenture Holder</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>s&#8221;) gathered in a Meeting of Debenture Holders (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>MDH</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;). The Debentures under the Offer distributed in the first series are hereinafter referred to as &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Debentures of the First Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;, the Debentures under the Offer distributed in the second series are hereinafter referred to as &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Debentures of the Second Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221; and the Debentures under the Offer distributed in the third series are hereinafter referred to as &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Debentures of the Third Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;.</FONT></P>

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<P style="TEXT-ALIGN: right; MARGIN: 0in 17.85pt 6pt 0in" align=right><FONT style="DISPLAY: none"><FONT lang=PT-BR style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%" face=Arial,sans-serif></FONT></FONT><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>1</FONT></FONT><FONT face=verdana,sans-serif><FONT style="DISPLAY: none"><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face=verdana,sans-serif></FONT></FONT><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>/8</FONT></FONT><FONT face=verdana,sans-serif></FONT><FONT face=verdana,sans-serif></FONT></P>

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   <P style="TEXT-ALIGN: right; MARGIN: 0in 17.85pt 6pt 0in" align=right><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif><FONT size=3 face="Times New Roman">&nbsp;</FONT><FONT size=3 face=Verdana>Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo</FONT><FONT size=3 face="Times New Roman"> <BR></FONT>Board of Directors of&nbsp;</FONT></FONT><FONT face=verdana,sans-serif><FONT><FONT lang=EN-US style="FONT-SIZE: 1pt; LINE-HEIGHT: normal" face=verdana,sans-serif>&nbsp;</FONT></FONT></FONT><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Sabesp</FONT></FONT></P></TD></TR></TABLE></FONT></DIV>




<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>4.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Type:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> Unsecured.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>5.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Issue Date:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> For all purposes and legal effects, the issue date of the Debentures will be February 15, 2018 (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Issue Date</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;).</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>6.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Type, Format and Convertibility: </FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>The Debentures will be registered and book-entry, simple, that is, not convertible into the Issuer&#8217;s shares and without the issue of caveat or certificates.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>7.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Amount: </FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Seven hundred and fifty thousand (750,000) Debentures will be issued, in up to three (3) series, and the number of Debentures to be allocated in each series will be defined according to the Bookbuilding Procedure.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>8.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Unit Par Value: </FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>One thousand reais (R$1,000.00) on the Issue Date (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Unit Par Value</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;).</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>9.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Placement and Distribution Procedure: </FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>The Debentures will be subject to public distribution with restricted efforts, pursuant to the provisions of CVM Instruction No. 476, under the mixed regime of (i) firm placement guarantee to be provided by the Coordinators (as defined below), individually and not jointly, for the Debentures of the First Series and/or the Debentures of the Second Series, in the amount of five hundred million reais (R$500,000,000.00), and (ii) best placement efforts, in the amount of two hundred and fifty million reais (R$250,000,000.00), with the intermediation of institutions that are part of the securities distribution system (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Coordinators</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;).&nbsp; </FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>10.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Bookbuilding Procedure:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The Bookbuilding procedure organized by the Coordinators, without receiving reservations from Professional Investors, without minimum or maximum lots, will be adopted to verify the demand for the Debentures at different levels of interest rates (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Bookbuilding Procedure</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;) and to define, with the Issuer: (i) the issue of each series of the Issue; (ii) the number of Debentures to be placed in each series of the Issue; (iii) the Remuneration for the Debentures of the First Series, if Debentures of the First Series are issued, the Remuneration for the Debentures of the Second Series, if Debentures of the Second Series are issued, and the Remuneration for the Debentures of the Third Series, if Debentures of the Third Series are issued; and (iv) the total amount of the Offer, upon the cancellation of any Debentures not placed. The result of the Bookbuilding Procedure will be ratified through an amendment to the Indenture, duly ratified by a corporate act of </FONT>


<FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>the Board of Directors of the Issuer, without the need for approval of the Debenture Holders gathered in a MDH.</FONT></P>

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   <P style="TEXT-ALIGN: right; MARGIN: 0in 17.85pt 6pt 0in" align=right><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif><FONT size=3 face="Times New Roman">&nbsp;</FONT><FONT size=3 face=Verdana>Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo</FONT><FONT size=3 face="Times New Roman"> <BR></FONT>Board of Directors of&nbsp;</FONT></FONT><FONT face=verdana,sans-serif><FONT><FONT lang=EN-US style="FONT-SIZE: 1pt; LINE-HEIGHT: normal" face=verdana,sans-serif>&nbsp;</FONT></FONT></FONT><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Sabesp</FONT></FONT></P></TD></TR></TABLE></FONT></DIV>




<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>11.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Subscription Price and Payment:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The Debentures will be paid in cash and in local currency at the time of subscription in the primary market, on one or more dates, for their Unit Par Value and, in case of payment of the Debentures on more than one date, as a result of an operating error in the payment of Debentures, for those Debentures that were not paid on the first payment date (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>First Payment Date</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;), for their Unit Par Value, plus the Remuneration, calculated pro rata temporis from the First Payment Date to the date of its actual payment, and may incur in premium or discount, using 8 (eight) decimal places, without rounding, through the Asset Distribution Module (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>MDA</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221; - </FONT><I><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>M&#243;dulo de Distribui&#231;&#227;o de Ativos</FONT></I><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>) managed and operated by B3 S.A. &#8211; Brasil, Bolsa, Balc&#227;o &#8211; CETIP UTVM Segment (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>B3</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;), from the date of the beginning of the distribution of the Debentures.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>12.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Price-Level Restatement:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The Unit Par Value of the Debentures of the First Series and the Unit Par Value of the Debentures of the Second Series will not be subject to price-level restatement or restatement to any index. The Unit Par Value of the Debentures of the Third Series (or the balance of the Unit Par Value of the Debentures of the Third Series, as the case may be) will be restated by the accumulated variation of the National Index of Broad Consumer Prices (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>IPCA</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221; - </FONT><I><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#205;ndice Nacional de Pre&#231;os ao Consumidor Amplo</FONT></I><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>), calculated and released monthly by the Brazilian Institute of Geography and Statistics (</FONT><I><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Instituto Brasileiro de Geografia e Estat&#237;stica</FONT></I><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>) from the First Payment Date to the date of its actual payment (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Price-Level Restatement</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;), and the proceeds of the Price-Level Restatement will be automatically incorporated to the Unit Par Value (or the balance of the Unit Par Value of the Debentures of the Third Series, as the case may be) (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Restated Par Value</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;). The Price-Level Restatement will be calculated pro rata temporis, per business days elapsed, according to the formula included in the Indenture. </FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>13.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The Debentures will be entitled to the following Remuneration (as defined below):</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> </FONT></B></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt 28.35pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>(a)</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration for the Debentures of the First Series:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The Debentures of the First Series will be entitled to a remuneration (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration for the Debentures of the First Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;) corresponding to one hundred percent (100%) of the accumulated variation of the average daily rates of ID - Interbank Deposits of one day, over extra group (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>ID Rate</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;), expressed as a percentage per year, based on two hundred and fifty-two (252) business days, daily calculated and released by B3 in the daily newsletter made available on its website (http://www.cetip.com.br), plus the spread or surcharge to be defined in the Bookbuilding Procedure, limited to fifty-eight hundredths percent (0.58%) per year, based on two hundred and fifty-two (252) business days. The Remuneration of the First Series will be calculated exponentially and cumulatively pro rata temporis, per business days elapsed, incurring on the Unit Par Value of the Debentures of the First Series (or balance of the Unit Par Value of the </FONT>


<FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Debentures of the First Series, as the case may be), from the First Payment Date or the last Payment Date of the Remuneration, as the case may be, and paid at the end of each Yield Period (as defined below). The calculation of the Remuneration of the First Series will abide to the formula included in the Indenture.</FONT></P>

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   <P style="TEXT-ALIGN: right; MARGIN: 0in 17.85pt 6pt 0in" align=right><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif><FONT size=3 face="Times New Roman">&nbsp;</FONT><FONT size=3 face=Verdana>Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo</FONT><FONT size=3 face="Times New Roman"> <BR></FONT>Board of Directors of&nbsp;</FONT></FONT><FONT face=verdana,sans-serif><FONT><FONT lang=EN-US style="FONT-SIZE: 1pt; LINE-HEIGHT: normal" face=verdana,sans-serif>&nbsp;</FONT></FONT></FONT><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Sabesp</FONT></FONT></P></TD></TR></TABLE></FONT></DIV>




<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt 28.35pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>(b)</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration for the Debentures of the Second Series:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The Debentures of the Second Series will be entitled to a remuneration (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration for the Debentures of the Second Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;) corresponding to one hundred percent (100%) of the accumulated variation of the ID Rate, expressed as a percentage per year, based on two hundred and fifty-two (252) business days, daily calculated and released by B3 in the daily newsletter made available on its website (http://www.cetip.com.br), plus the spread* or surcharge to be defined in the Bookbuilding Procedure, limited to ninety hundredths percent (0.90%) per year, based on two hundred and fifty-two (252) business days. The Remuneration of the Second Series will be calculated exponentially and cumulatively pro rata temporis, per business days elapsed, incurring on the Unit Par Value of the Debentures of the Second Series (or balance of the Unit Par Value of the Debentures of the Second Series, as the case may be), from the First Payment Date or the last Payment Date of the Remuneration, as the case may be, and paid at the end of each Yield Period. The calculation of the Remuneration of the Second Series will abide to the formula included in the Indenture.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt 28.35pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>(c)</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration for the Debentures of the Third Series:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The Debentures of the Third Series will be entitled to a remuneration (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration of the Third Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221; and, together with the Remuneration of the First Series and the Remuneration of the Second Series, &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;) corresponding to a certain percentage per year, to be defined in the Bookbuilding Procedure, in all cases limited to a higher maximum rate between: (i) one integer and ten hundredths percent (1.10%) per year, based on two hundred and fifty-two (252) business days, exponentially adding the domestic return rate of the IPCA Treasury with semiannual interest, due on August 15, 2024 (IPCA Treasury + 2024), based on the indicative quotation released by ANBIMA on its web page (http://www.anbima.com.br), to be ascertained at the close of the business day immediately preceding the date of the Bookbuilding Procedure; or (ii) six integers and fifteen hundredths percent (6.15%) per year, based on two hundred and fifty-two (252) business days. The Remuneration of the Third Series will be calculated exponentially and cumulatively pro rata temporis, per business days elapsed, incurring on the Restated Par Value of the Debentures of the Third Series, from the First Payment Date or the last Payment Date of the Remuneration, as the case may be, and paid at the end of each Yield Period. The calculation of the Remuneration of the Third Series will abide to the formula included in the Indenture. </FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt 28.35pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>(d)</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>To calculate the Remuneration of the First Series, the Remuneration of the Second Series and the Remuneration of the Third Series, the &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Yield Period</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221; is defined as the time </FONT>


<FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>frame starting on the First Payment Date, including this date, for the First Yield Period, or on the immediately preceding Remuneration Payment Date, including this date, for the other Yield Periods, and ending on the Remuneration Payment Date, not including this date, corresponding to the period in question.</FONT></P>

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<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>14.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration Payment: </FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Except in cases of full early redemption of the Debentures of the First Series, of optional extraordinary amortization of the Debentures of the First Series, of redemption of the Debentures of the Third Series, of redemption of the Debentures of the First Series and of the Debentures of the Second Series and/or of early maturity, as set forth in the Issued Deed, the amounts concerning (i) the Remuneration of the First Series and the Remuneration of the Second Series will be paid semi-annually, always on the fifteenth day of the months of February and August of each year, with the first payment due on August 15, 2018 and the last payment due on the Maturity Date of the First Series in the case of the Debentures of the First Series and on the Maturity Date of the Second Series in the case of the Debentures of the Second Series; and (ii) the Remuneration of the Third Series will be paid annually, always on the fifteen day of the month of February of each year, with the first payment due in 2019 and the last payment due on the Maturity Date of the Third Series (each of this dates a &#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Remuneration Payment Date</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;).</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>15.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Term and Maturity Date:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> Except in cases of full early redemption of the Debentures of the First Series, os optional extraordinary amortization of the Debentures of the First Series, of redemption of the Debentures of the Third Series, of redemption of the Debentures of the First Series and of the Debentures of the Second Series and/or of early maturity, as set forth in the Issued Deed, the maturity date of the Debentures of the First Series will be in three (3) years, as of the Issue Date, that is, February 15, 2021 (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Maturity Date of the First Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;), the maturity date of the Debentures of the Second Series will be in five (5) years, as of the Issue Date, that is, February 15, 2023 (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Maturity Date of the Second Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;) and the maturity date of the Debentures of the Third Series will be in seven (7) years, as of the Issue Date, that is, February 15, 2025 (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Maturity Date of the Third Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;).</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>16.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Guarantee:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> None.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>17.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Amortization of the Unit Par Value:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> Except in cases of full early redemption of the Debentures of the First Series, of optional extraordinary amortization of the Debentures of the First Series, of redemption of the Debentures of the Third Series, of redemption of the Debentures of the First Series and of the Debentures of the Second Series and/or of early maturity, as set forth in the Issued Deed, (i) the Unit Par Value of the Debentures of the First Series (or balance of the Unit Par Value of the of the Debentures of the First Series, as the case may be) will be paid in a single installment, being due on the Maturity Date of the First Series; (ii) the Unit Par Value of the Debentures of the Second Series will be amortized in two (2) equal installments, the first installment due on February 15, 2022 and equivalent to fifty percent (50%) of the Unit Par Value of Debentures of </FONT>


<FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>the Second Series, and the last installment due on the Maturity Date of the Second Series and equivalent to fifty percent (50%) of the Unit Par Value of Debentures of the Second Series; and (iii) the Restated Par Value of the Debentures of the Third Series will be amortized in two (2) installments, the first installment due on February 15, 2024 and equivalent to fifty percent (50%) of the Debentures of the Third Series and the last installment due on the Maturity Date of the Third Series and equivalent to one hundred percent (100%) of the Restated Par Value of the Debentures of the Third Series.</FONT></P>

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   <P style="TEXT-ALIGN: right; MARGIN: 0in 17.85pt 6pt 0in" align=right><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif><FONT size=3 face="Times New Roman">&nbsp;</FONT><FONT size=3 face=Verdana>Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo</FONT><FONT size=3 face="Times New Roman"> <BR></FONT>Board of Directors of&nbsp;</FONT></FONT><FONT face=verdana,sans-serif><FONT><FONT lang=EN-US style="FONT-SIZE: 1pt; LINE-HEIGHT: normal" face=verdana,sans-serif>&nbsp;</FONT></FONT></FONT><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Sabesp</FONT></FONT></P></TD></TR></TABLE></FONT></DIV>




<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>18.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Payment Venue:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The payments to which the Debentures are entitled will be made by the Issuer in the respective maturity date, using, as the case may be: (a) the procedures adopted by B3, for Debentures electronically held in custody at B3; and/or (b) the procedures adopted by the settlement bank for the Debentures that are not electronically held in custody at B3 (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Payment Venue</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;).</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>19.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Extension of the Terms:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The terms related to the payment of any obligation related to the Debentures will be considered extended up until the first (1<SUP>st</SUP>) business day thereafter, if the maturity date falls on a day on which there is no commercial or banking office hours at the Payment Venue or in the City of S&#227;o Paulo, State of S&#227;o Paulo, without any increase in the amounts to be paid, except for cases in which the payments must be carried out through B3, in which case there will only be an extension when the payment date falls on a national holiday, Saturday and/or Sunday.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>20.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Allocation of Proceeds:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The proceeds from the fundraising through the Issue will be allocated to the refinancing of financial commitments maturing in 2018 and to the cash restoration of the Issuer.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>21.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Deposit for Placement and Trading</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>: The Debentures will be deposited to be: (a) distributed in the primary market through &#8220;MDA&#8221;, managed and operated by B3, with the distribution being financially settled through B3; and (b) traded in the secondary market through CETIP21 - Securities (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>CETIP21</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;), managed and operated by B3, with the negotiations financially settled and the Debentures electronically held in custody at B3, subject to the provisions of the Indenture.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>22.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Optional Acquisition:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The Issuer may, at any time, acquire outstanding Debentures, observing the provisions of Article 55, Paragraph 3, of the Brazilian Corporation Law (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Optional Acquisition</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;). The Debentures acquired by the Issuer may be: (i) canceled, with the cancellation subject to a deliberative act of the Issuer; (ii) held in the Issuer&#8217;s treasury; or (iii) placed again in the market, subject to the trading restrictions set forth in CVM Instruction No. 476. The Debentures acquired by the Issuer to be held in treasury, if and when replaced in the market, will be entitled to the same Remuneration as the other outstanding Debentures of the respective series.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>23.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Full Early Redemption:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The early redemption of the Debentures of the First Series may be carried at any time, at the discretion of the Issuer, as of the eighteenth (18<SUP>th</SUP>) month from the Issue Date, that is, as of August 15, 2019, including this date, for all Debentures of the First Series (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Full</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> </FONT>


<B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Early Redemption of the Debentures of the First Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>&#8221;). The Full Early Redemption of the Debentures of the First Series will be carried out upon the payment of the Unit Par Value of the Debentures of the First Series, plus the Remuneration of the First Series, calculated pro rata temporis from the First Payment Date or the last Remuneration Payment Date of the Debentures of the First Series, as the case may be, up until the actual date of redemption, plus a premium to holders of the Debentures of the First Series equivalent to twenty hundredths percent (0.20%) per year, for the Remaining Term, to be paid to the Debenture Holders of the First Series, according to the procedure adopted by B3 for the Debentures electronically held in custody at B3, calculated according to the formula included in the Indenture. The Debentures of the First Series will not be subject to partial early redemption. The early redemption of the Debentures of the Second Series or the Debentures of the Third Series will not be allowed.</FONT></P>

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   <P style="TEXT-ALIGN: right; MARGIN: 0in 17.85pt 6pt 0in" align=right><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif><FONT size=3 face="Times New Roman">&nbsp;</FONT><FONT size=3 face=Verdana>Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo</FONT><FONT size=3 face="Times New Roman"> <BR></FONT>Board of Directors of&nbsp;</FONT></FONT><FONT face=verdana,sans-serif><FONT><FONT lang=EN-US style="FONT-SIZE: 1pt; LINE-HEIGHT: normal" face=verdana,sans-serif>&nbsp;</FONT></FONT></FONT><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Sabesp</FONT></FONT></P></TD></TR></TABLE></DIV>




<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>24.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Optional Extraordinary Amortization:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> </FONT><FONT lang=EN-US style="FONT-SIZE: 9pt; TEXT-DECORATION: none; LETTER-SPACING: 0pt; LINE-HEIGHT: 150%" color=windowtext face=verdana,sans-serif>The optional extraordinary amortization of the Unit Par Value of the Debentures of the First Series (or balance of the Unit Par Value of the Debentures of the First Series, as the case may be), limited to ninety percent (90%), may be carried out at any time, at the discretion of Issuer, as of the eighteenth (18<SUP>th</SUP>) month from the Issue Date, that is, as of August 15, 2019, including this date, for all Debentures of the First Series, proportionally (&#8220;</FONT><B><FONT lang=EN-US style="FONT-SIZE: 9pt; TEXT-DECORATION: none; LETTER-SPACING: 0pt; LINE-HEIGHT: 150%" color=windowtext face=verdana,sans-serif>Optional Extraordinary Amortization of the Debentures of the First Series</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; TEXT-DECORATION: none; LETTER-SPACING: 0pt; LINE-HEIGHT: 150%" color=windowtext face=verdana,sans-serif>&#8221;). The Optional Extraordinary Amortization of Debentures of the First Series will be carried out upon payment of (i) the percentage of the Unit Par Value of the Debentures of the First Series (or the Unit Par Value of the Debentures of the First Series, as the case may be) to be amortized, plus the Remuneration of the First Series calculated pro rata temporis from the First Payment Date or the Last Payment Date of the Remuneration of the Debentures of the First Series, as the case may be, up until the actual Optional Extraordinary Amortization of the Debentures of the First Series; and (ii) a premium equivalent to twenty hundredths percent (0.20%), incurring on the amount indicated in item &#8220;(i)&#8221; above, calculated according to the formula included in the Indenture.</FONT><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> The optional extraordinary amortization of the Debentures of the Second Series or the Debentures of the Third Series will not be allowed.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>25.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Charges on Arrears:</FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif> Without prejudice to the Remuneration, in case of late payment of any amount due to the holders of Debentures, the delayed debts will be subject to a non-compensatory charge on arrears of two percent (2%) on the amount due and arrears interest calculated from the non-payment date up until the actual payment date, at the rate of one percent (1%) per month, on the amount thus due, regardless of notice, notification or judicial or extrajudicial injunction, in addition to the expenses incurred by the holders of the Debentures for the collection of their credits.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>26.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Early Maturity Cases: </FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>The Debentures will have their early maturity declared in the cases set forth in the Indenture.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 0in 0pt; TEXT-INDENT: 0in"><B><FONT lang=EN-US style="FONT-SIZE: 10pt; LINE-HEIGHT: 150%" face=Tahoma,sans-serif>27.</FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 7pt; LINE-HEIGHT: 150%" face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></B><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>Renegotiation: </FONT></B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>There will be no renegotiation of the Debentures.</FONT></P>

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   <P style="TEXT-ALIGN: right; MARGIN: 0in 17.85pt 6pt 0in" align=right><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif><FONT size=3 face="Times New Roman">&nbsp;</FONT><FONT size=3 face=Verdana>Companhia de Saneamento B&#225;sico do Estado de S&#227;o Paulo</FONT><FONT size=3 face="Times New Roman"> <BR></FONT>Board of Directors of&nbsp;</FONT></FONT><FONT face=verdana,sans-serif><FONT><FONT lang=EN-US style="FONT-SIZE: 1pt; LINE-HEIGHT: normal" face=verdana,sans-serif>&nbsp;</FONT></FONT></FONT><FONT face=verdana,sans-serif><FONT lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Sabesp</FONT></FONT></P></TD></TR></TABLE></FONT></DIV>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 11.05pt 6pt 0in"><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" color=black face=verdana,sans-serif>The Board of Directors also authorized the members of the Company's Executive Board, pursuant to the legal and statutory provisions, to carry out any and all acts related to the 22<SUP>nd</SUP> issue of simple debentures, not convertible into shares, of the unsecured type, in up to three (3) series, including, but not limited to, negotiating and entering into the Issued Deed and any amendments thereto, including the amendment to the Indenture that will ratify the Bookbuilding Procedure, as well as the agreement for the coordination, placement and public distribution with restricted efforts, under the regimes of firm guarantee and of best placement efforts, signing all the documents and, also, carrying out all other measures necessary to achieve this purpose, including being able to define the existence of 1 (one), 2 (two) or three (3) series and the number of Debentures to be allocated in each series, to establish the total amount of the Offer, to cancel Debentures that have not been placed, and to establish the remuneration of the Debentures, pursuant to item 10 above, after the ascertainment in the Bookbuilding Procedure to be carried out by the Coordinators, within the limits and parameters established herein. Finally, the Board of Directors ratified all the acts related to the 22<SUP>nd</SUP> issue that were previously carried out by the Executive Board.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 6pt 11.05pt 6pt 0in"><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" color=black face=verdana,sans-serif>(...)</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 0in 11.05pt 6pt 0in"><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" color=black face=verdana,sans-serif>The minutes, after approved, will be signed by the Members of the Board of Directors: Benedito Pinto Ferreira Braga Junior, Francisco Luiz Sibut Gomide, Francisco Vidal Luna, Jer&#244;nimo Antunes, Jerson Kelman, Lucas Navarro Prado, Lu&#237;s Eduardo Alves de Assis and Reinaldo Guerreiro.</FONT></P>

<P style="TEXT-ALIGN: justify; MARGIN: 12pt 11.05pt 6pt 0in"><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>This is a free English translation of the original minutes drawn up in the Book of Minutes of the Meetings of the Company&#8217;s Board of Directors.</FONT></P>

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<P style="TEXT-ALIGN: justify; MARGIN: 0in 11.05pt 6pt 0in"><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: 150%" face=verdana,sans-serif>S&#227;o Paulo, December 21, 2017.</FONT></P>

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   <P style="MARGIN: 0in 11.05pt 6pt 0in" align=center><B><FONT style="FONT-SIZE: 9pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Benedito Pinto Ferreira Braga Junior</FONT></B></P></TD>

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   <P style="MARGIN: 0in 11.05pt 6pt 0in" align=center><B><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Marialve de S. Martins</FONT></B></P></TD></TR>

<TR style="HEIGHT: 16.95pt">

   <TD style="HEIGHT: 16.95pt; PADDING-BOTTOM: 0in; PADDING-TOP: 0in; PADDING-LEFT: 3.5pt; PADDING-RIGHT: 3.5pt" vAlign=top width="54%" align=center>

   <P style="MARGIN: 0in 11.05pt 6pt 0in" align=center><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Chairman of the Board of Directors</FONT></P></TD>

   <TD style="HEIGHT: 16.95pt; PADDING-BOTTOM: 0in; PADDING-TOP: 0in; PADDING-LEFT: 3.5pt; PADDING-RIGHT: 3.5pt" vAlign=top width="46%" align=center>

   <P style="MARGIN: 0in 11.05pt 6pt 0in" align=center><FONT lang=EN-US style="FONT-SIZE: 9pt; LINE-HEIGHT: normal" face=verdana,sans-serif>Secretary of the Board of Directors</FONT></P></TD></TR></TABLE></DIV>

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<DIV align=center><FONT color=#000000 size=3 face="Times New Roman"><B><U>

<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></U></B></FONT>

<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;January 03, 2018</FONT></DIV>

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   <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>

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

   <TD vAlign=bottom align=left>/s/&nbsp;&nbsp;<FONT style="FONT-FAMILY: times new roman" size=3>Rui de Britto &#193;lvares Affonso</FONT>&nbsp;&nbsp;&nbsp;&nbsp;

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   <DIV align=left><FONT color=#000000 size=2 face="Times New Roman">Name: Rui de Britto &#193;lvares Affonso </FONT></DIV>

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

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<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>

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