<SEC-DOCUMENT>0001292814-19-001807-index.html : 20190509
<SEC-HEADER>0001292814-19-001807.hdr.sgml : 20190509
<ACCEPTANCE-DATETIME>20190508211510
ACCESSION NUMBER:		0001292814-19-001807
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		7
CONFORMED PERIOD OF REPORT:	20181231
FILED AS OF DATE:		20190509
DATE AS OF CHANGE:		20190508

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:		19808530

	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>sbsdf2018_6k.htm
<DESCRIPTION>FINANCIAL STATEMENTS AS AT DECEMBER 31, 2018 AND 2017
<TEXT>
Document 1 - file: sbsdf2018_6k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>grafico1.gif
<TEXT>
Document 2 - file: grafico1.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>grafico2.gif
<TEXT>
Document 3 - file: grafico2.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>grafico3.gif
<TEXT>
Document 4 - file: grafico3.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>grafico4.gif
<TEXT>
Document 5 - file: grafico4.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>grafico5.gif
<TEXT>
Document 6 - file: grafico5.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>tabela1.gif
<TEXT>
Document 7 - file: tabela1.gif

</DOCUMENT>
</SEC-DOCUMENT>