<SEC-DOCUMENT>0001104659-23-055172-index.html : 20230503
<SEC-HEADER>0001104659-23-055172.hdr.sgml : 20230503
<ACCEPTANCE-DATETIME>20230502200019
ACCESSION NUMBER:		0001104659-23-055172
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20230503
DATE AS OF CHANGE:		20230502

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13883
		FILM NUMBER:		23881248

	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>DEFA14A
<SEQUENCE>1
<FILENAME>tm2314471d1_defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: tm2314471d1_defa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>tm2314471d1_defa14aimg001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: tm2314471d1_defa14aimg001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>tm2314471d1_defa14aimg002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: tm2314471d1_defa14aimg002.jpg

</DOCUMENT>
</SEC-DOCUMENT>