<SEC-DOCUMENT>0001104659-21-000361-index.html : 20210305
<SEC-HEADER>0001104659-21-000361.hdr.sgml : 20210305
<ACCEPTANCE-DATETIME>20210104165542
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001104659-21-000361
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20210104

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CALIFORNIA WATER SERVICE GROUP
		CENTRAL INDEX KEY:			0001035201
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER SUPPLY [4941]
		IRS NUMBER:				770448994
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		1720 N FIRST ST
		STREET 2:		C/O CALIFORNIA WATER SERVICE CO
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95112
		BUSINESS PHONE:		4083678200

	MAIL ADDRESS:	
		STREET 1:		1720 FIRST ST
		STREET 2:		C/O CALIFORNIA WATER SERVICE CO
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95112
</SEC-HEADER>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>1
<FILENAME>filename1.htm
<TEXT>
Document 1 - file: filename1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g15451bgi001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g15451bgi001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g15451bgi002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g15451bgi002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g15451bgi003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g15451bgi003.jpg

</DOCUMENT>
</SEC-DOCUMENT>