UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K



                                 CURRENT REPORT
     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


Date of report (Date of earliest event reported):    February 22, 2006
                                                     -----------------


                         CALIFORNIA WATER SERVICE GROUP
                         ------------------------------
             (Exact name of registrant as specified in its charter)



        Delaware                     1-13883                 77-0448994
(State or other jurisdiction       (Commission           (I.R.S. Employer
     of Incorporation)             File Number)         Identification No.)


   1720 North First Street, San Jose, CA.                        95112
   --------------------------------------                        -----
  (Address of principal executive offices)                    (Zip Code)

Registrant's telephone number, including area code      1-408-367-8200
                                                        ---------------


                                 Not Applicable
                                 --------------
          (Former name or former address, if changed since last report)


Check  the  appropriate  box  below  if the  form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ]  Written  communications  pursuant to Rule 425 under the  Securities Act (17
     CFR 230.425)

[ ]  Soliciting  material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
     240.14a-12)

[ ]  Pre-commencement   communications  pursuant  to  Rule  14d-2(b)  under  the
     Exchange Act (17 CFR 240.14d-2(b))

[ ]  Pre-commencement  communications  pursuant  to Rule  13e-4(c  )  under  the
     Exchange Act (17 CFR 240.13e-4(c ))




Item 5.02 Appointment of Principal Officers


     On February 22, 2006, the registrant  issued the press release  attached to
this report as Exhibit  99.1,  which  announces  the  appointment  of a new Vice
President, Chief Financial Officer and Treasurer.


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                                   SIGNATURES


     Pursuant to the requirement of the Securities and Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                         CALIFORNIA WATER SERVICE GROUP
                                  (Registrant)



Date: February 22, 2006                      By:  /s/ Dan L. Stockton
                                                  -------------------
                                                      Dan L. Stockton
                                                      Corporate Secretary



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                                  Exhibit Index
                                  -------------




Exhibit No.                                 Description
-----------                                 -----------

99.1                Press  release of the  registrant  dated  February 22, 2006,
                    which announces the selection of a new Vice President, Chief
                    Financial Officer and Treasurer.


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[GRAPHIC OMITTED]              NEWS RELEASE
                         CALIFORNIA WATER SERVICE GROUP        [OBJECT OMITTED]

             1720 North First Street                           February 22, 2006
             San Jose, CA 95112-4598


Contact:     Shannon Dean (310) 257-1435



                    CALIFORNIA WATER SERVICE GROUP NAMES NEW
              VICE PRESIDENT, CHIEF FINANCIAL OFFICER AND TREASURER

     SAN JOSE, CA - California Water Service Group today announced the selection
of Martin A.  Kropelnicki as its Vice  President,  Chief  Financial  Officer and
Treasurer,  effective  March 13, 2006. He will succeed John S. Tootle,  who will
resume responsibilities as in-house corporate counsel after filling the position
on an interim basis since October 2005.

     "Marty has a great deal of expertise  and  experience,  and he is eminently
qualified for the position. He has had a distinguished career and I am confident
that he will  fill  this  important  role  capably  and be a great  asset to our
Company," said President and Chief Executive Officer Peter C. Nelson.

     Kropelnicki,  who is 39 years-old,  comes to California Water Service Group
from  Berkeley,   California-based  PowerLight  Corporation,  a  leading  global
provider  and  installer  of  large-scale  solar  electric  systems  and  energy
efficiency   services.   As  Chief   Financial   Officer  of   PowerLight,   his
responsibilities  include finance and accounting,  human resources,  information
technology, and facilities.


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     Prior  to  joining  PowerLight,   Kropelnicki  served  as  Chief  Financial
Officer-Executive  Vice President of Corporate Services and Corporate  Secretary
for Hall Kinion & Associates,  a multi-national staffing and consulting company.
During his  seven-year  tenure at Hall  Kinion,  his  responsibilities  included
finance and accounting,  compliance, investor relations, mergers & acquisitions,
legal and human resources.  In addition,  Kropelnicki  successfully  managed the
initial public  offering and secondary  offering.  Hall Kinion was  successfully
acquired by KFORCE Inc. in June 2005.

     Earlier in his career,  Kropelnicki  held  executive- and  management-level
positions  at Deloitte & Touche  Consulting  Group and Pacific Gas and  Electric
Company. He began his professional career as an Accountant at Hewlett Packard in
Palo Alto California.

     Kropelnicki  holds a Bachelor  of Arts  Degree and Master of Arts Degree in
Business  Economics  from  San  Jose  State  University.  He  currently  teaches
investment management as a part-time faculty member at his alma mater.

     California  Water Service Group is the parent  company of California  Water
Service  Company,  Washington  Water Service  Company,  New Mexico Water Service
Company,  and CWS Utility  Services.  The  subsidiaries  provide  regulated  and
non-regulated  water service to more than 2 million  people in 100  communities.
The  Company's  common  stock  trades on the New York Stock  Exchange  under the
symbol "CWT".  Additional  information is available at the Company's web site at
www.calwatergroup.com.

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This  news  release  contains  forward-looking  statements  within  the  meaning
established by the Private Securities Litigation Reform Act of 1995 ("Act"). The
forward-looking  statements  are  intended to qualify  under  provisions  of the
federal  securities  laws for "safe harbor"  treatment  established  by the Act.
Forward-looking   statements  are  based  on  currently  available  information,
expectations,  estimates, assumptions and projections, and management's judgment
about the Company,  the water utility industry and general economic  conditions.
Such  words  as  expects,   intends,   plans,  believes,   estimates,   assumes,
anticipates,  projects,  predicts,  forecasts  or  variations  of such  words or
similar  expressions are intended to identify  forward-looking  statements.  The
forward-looking  statements are not guarantees of future  performance.  They are
subject to  uncertainty  and changes in  circumstances.  Actual results may vary
materially from what is contained in a forward-looking  statement.  Factors that
may cause a result different than expected or anticipated include:  governmental
and regulatory commissions' decisions, including decisions on proper disposition
of property;  changes in regulatory  commissions'  policies and procedures;  the
timeliness  of  regulatory  commissions'  actions  concerning  rate relief;  new
legislation;  changes in accounting  valuations  and  estimates;  the ability to
satisfy  requirements related to the Sarbanes-Oxley Act and other regulations on
internal controls; electric power interruptions;  increases in suppliers' prices
and the  availability  of supplies  including  water and power;  fluctuations in
interest  rates;   changes  in   environmental   compliance  and  water  quality
requirements;  acquisitions and our ability to successfully  integrate  acquired
companies;  the ability to successfully  implement  business  plans;  changes in
customer water use patterns;  the impact of weather on water sales and operating
results;  access to sufficient capital on satisfactory terms; civil disturbances
or  terrorist  threats  or acts,  or  apprehension  about  the  possible  future
occurrences of acts of this type; the involvement of the United States in war or
other hostilities;  restrictive covenants in or changes to the credit ratings on
our current or future debt that could increase our financing costs or affect our
ability to borrow, make payments on debt or pay dividends;  and, other risks and
unforeseen events. When considering  forward-looking statements, you should keep
in mind the  cautionary  statements  included  in this  paragraph.  The  Company
assumes no obligation to provide public updates of forward-looking statements.

                                      # # #


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