<SEC-DOCUMENT>0001973379-23-000237.txt : 20231212
<SEC-HEADER>0001973379-23-000237.hdr.sgml : 20231212
<ACCEPTANCE-DATETIME>20231212151514
ACCESSION NUMBER:		0001973379-23-000237
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20231212
DATE AS OF CHANGE:		20231212

SUBJECT COMPANY:	

	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:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-13883
		FILM NUMBER:		231480996

	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

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mortensen Michelle R
		CENTRAL INDEX KEY:			0001629473

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		1720 NORTH FIRST STREET
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95112
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001629473</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001035201</issuerCik>
      <issuerName>CALIFORNIA WATER SERVICE GROUP</issuerName>
      <secFileNumber>001-13883</secFileNumber>
      <issuerAddress>
        <com:street1>1720 N FIRST ST</com:street1>
        <com:street2>C/O CALIFORNIA WATER SERVICE CO</com:street2>
        <com:city>SAN JOSE</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>95112</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>4083678200</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Mortensen Michelle R</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
        <relationshipToIssuer>Corporate Secretary</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Georgeson Securities Corp</name>
        <address>
          <com:street1>144 Fernwood Avenue</com:street1>
          <com:city>Edison</com:city>
          <com:stateOrCountry>NJ</com:stateOrCountry>
          <com:zipCode>08837</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>675</noOfUnitsSold>
      <aggregateMarketValue>35484.75</aggregateMarketValue>
      <noOfUnitsOutstanding>57711000</noOfUnitsOutstanding>
      <approxSaleDate>12/12/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>12/12/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>California Water Service Group</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>675</amountOfSecuritiesAcquired>
      <paymentDate>12/12/2023</paymentDate>
      <natureOfPayment>Services Rendered</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>Under securities to be sold, the date acquired and date of payment are various dates.</remarks>
    <noticeSignature>
      <noticeDate>12/12/2023</noticeDate>
      <signature>Conformed Signature on File</signature>
    </noticeSignature>
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