    <SEC-DOCUMENT>0001410578-19-000619-index.html : 20190801
    <SEC-HEADER>0001410578-19-000619.hdr.sgml : 20190801
    <ACCEPTANCE-DATETIME>20190801091551
    ACCESSION NUMBER:		0001410578-19-000619
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		37
    CONFORMED PERIOD OF REPORT:	20190801
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20190801
    DATE AS OF CHANGE:		20190801

    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:		19991267

    	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>tv526447_8k.htm
    <DESCRIPTION>FORM 8-K
    <TEXT>
    Document 1 - file: tv526447_8k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>tv526447_ex99-1.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 2 - file: tv526447_ex99-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>tv526447_ex99-2.htm
    <DESCRIPTION>EXHIBIT 99.2
    <TEXT>
    Document 3 - file: tv526447_ex99-2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>tv526447_ex99-1img001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: tv526447_ex99-1img001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>tv526447_ex99-1img002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: tv526447_ex99-1img002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>tv526447_ex99-2img001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tv526447_ex99-2img001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>tv526447_ex99-2img002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: tv526447_ex99-2img002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>tv526447_ex99-2img003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: tv526447_ex99-2img003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>tv526447_ex99-2img004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: tv526447_ex99-2img004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>tv526447_ex99-2img005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: tv526447_ex99-2img005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>tv526447_ex99-2img006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: tv526447_ex99-2img006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>tv526447_ex99-2img007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: tv526447_ex99-2img007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>tv526447_ex99-2img008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: tv526447_ex99-2img008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>tv526447_ex99-2img009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: tv526447_ex99-2img009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>tv526447_ex99-2img010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: tv526447_ex99-2img010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>tv526447_ex99-2img011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: tv526447_ex99-2img011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>tv526447_ex99-2img012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: tv526447_ex99-2img012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>tv526447_ex99-2img013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: tv526447_ex99-2img013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>tv526447_ex99-2img014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: tv526447_ex99-2img014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>tv526447_ex99-2img015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: tv526447_ex99-2img015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>tv526447_ex99-2img016.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: tv526447_ex99-2img016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>tv526447_ex99-2img017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: tv526447_ex99-2img017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>tv526447_ex99-2img018.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: tv526447_ex99-2img018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>tv526447_ex99-2img019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: tv526447_ex99-2img019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>tv526447_ex99-2img020.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: tv526447_ex99-2img020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>tv526447_ex99-2img021.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: tv526447_ex99-2img021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>27
    <FILENAME>cwt-20190801.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
    <TEXT>
    Document 27 - file: cwt-20190801.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>28
    <FILENAME>cwt-20190801_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
    Document 28 - file: cwt-20190801_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>29
    <FILENAME>cwt-20190801_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
    Document 29 - file: cwt-20190801_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>30
    <FILENAME>tv526447_8k_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 30 - file: tv526447_8k_htm.html

    Document 30 - RAW XML: tv526447_8k_htm.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>31
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>32
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>33
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>34
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 34 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>35
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 35 - file: FilingSummary.html

    Document 35 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>37
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 37 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>38
    <FILENAME>0001410578-19-000619-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 38 - file: 0001410578-19-000619-xbrl.zip

    </DOCUMENT>
    </SEC-DOCUMENT>