    <SEC-DOCUMENT>0001104659-19-023599-index.html : 20190425
    <SEC-HEADER>0001104659-19-023599.hdr.sgml : 20190425
    <ACCEPTANCE-DATETIME>20190425091546
    ACCESSION NUMBER:		0001104659-19-023599
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		26
    CONFORMED PERIOD OF REPORT:	20190425
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20190425
    DATE AS OF CHANGE:		20190425

    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:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13883
    		FILM NUMBER:		19765680

    	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>8-K
    <SEQUENCE>1
    <FILENAME>a19-8879_18k.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a19-8879_18k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>a19-8879_1ex99d1.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: a19-8879_1ex99d1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>a19-8879_1ex99d2.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: a19-8879_1ex99d2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g88791moi001.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g88791moi001.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g88791moi002.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g88791moi002.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g88791moi003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g88791moi003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g88791moi004.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g88791moi004.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g88791moi005.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g88791moi005.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g88791moi006.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g88791moi006.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g88791moi007.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g88791moi007.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g88791moi008.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g88791moi008.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>g88791moi009.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g88791moi009.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>g88791moi010.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g88791moi010.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>g88791moi011.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: g88791moi011.gif

    </DOCUMENT>
    <DOCUMENT>
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    <SEQUENCE>15
    <FILENAME>g88791moi012.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: g88791moi012.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>g88791moi013.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g88791moi013.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>g88791moi014.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g88791moi014.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>g88791moi015.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: g88791moi015.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>g88791moi016.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: g88791moi016.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>g88791moi017.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: g88791moi017.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>g88791moi018.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: g88791moi018.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>g88791moi019.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: g88791moi019.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>g88791moi020.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: g88791moi020.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>g88791moi021.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: g88791moi021.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>g88791moi022.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: g88791moi022.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>g88791mm01i001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: g88791mm01i001.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>