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

                                    FORM 10-K

         [X] ANNUAL  REPORT  PURSUANT  TO SECTION 13 OR 15(d) OF THE  SECURITIES
         EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2003

                                        OR

         [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
         SECURITIES EXCHANGE ACT OF 1934
         For the transition period from .............to....................
         Commission file No.  1-13883

                         CALIFORNIA WATER SERVICE GROUP

             (Exact name of registrant as specified in its charter)

          Delaware                                    77-0448994
          --------                                    ----------
  (State of Incorporation)                (I.R.S. Employer Identification No.)


               1720 North First Street, San Jose, California 95112
               ---------------------------------------------------
               (Address of Principal Executive Offices) (Zip Code)

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

           Securities registered pursuant to Section 12(b) of the Act:

 Title of Each Class:                 Name of Each Exchange on Which Registered:
    Common Stock, $0.01 Par Value                New York Stock Exchange
    Preferred Share Purchase Rights              New York Stock Exchange

           Securities registered pursuant to Section 12(g) of the Act:

                                      None
                                (Title of Class)

Indicate by check mark whether the Registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  Registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days. Yes _X_ No ___.

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of Registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [x]

Indicate  by check mark  whether  the  registrant  is an  accelerated  filer (as
defined in Rule 12b-2 of the Act). Yes _X_ No ___

The  aggregate  market value of the common stock held by  non-affiliates  of the
Registrant  was $427  million on June 30,  2003,  the last  business  day of the
registrant's  most recently  completed  second fiscal quarter.  The valuation is
based on the closing price of the registrant's common stock as traded on the New
York Stock Exchange.

Common stock outstanding at March 4, 2004 - 16,932,046 shares.



                                  EXHIBIT INDEX

                THE EXHIBIT INDEX TO THIS FORM 10-K IS ON PAGE 28

                       DOCUMENTS INCORPORATED BY REFERENCE

Designated  portions  of  Registrant's  Annual  Report to  Stockholders  for the
calendar year ended December 31, 2003 (2003 Annual Report) are  incorporated  by
reference in Part I (Item 1and 2) and Part II (Items 5, 6, 7, 7A and 8).

Designated  portions  of the  Registrant's  Proxy  Statement  (Proxy  Statement)
relating  to the  2004  annual  meeting  of  stockholders  are  incorporated  by
reference in Part III (Items 10, 11, 12 and 14).

                                       2


                                   TABLE OF CONTENTS


                                                                                                 Page

         PART I

                                                                                            
              Item  1.    Business ............................................................... 5
                          Forward Looking Statements ............................................. 5
                          General Development of Business ........................................ 5
                          Financial Information about Industry Segments .......................... 7
                          Narrative Description of Business ...................................... 7
                          Geographical Service Areas and Number of Customers at Year-end ......... 8
                          Rates and Regulation ...................................................10
                          Water Supply ...........................................................10
                          Nonregulated Operations ................................................13
                          Utility Plant Construction Program .....................................14
                          Sale of Surplus Real Properties ........................................15
                          California Energy Situation ............................................15
                          Security at Company Facilities .........................................15
                          Quality of Water Supplies ..............................................15
                          Competition and Condemnation ...........................................16
                          Environmental Matters ..................................................16
                          Human Resources ........................................................17
                          Financial Information about Foreign and Domestic Operations and
                              Export Sales .......................................................17

              Item  2.    Properties .............................................................17

              Item  3.    Legal Proceedings ......................................................18

              Item  4.    Submission of Matters to a Vote of Security Holders ....................19

                          Executive Officers of the Registrant ...................................20

         PART II

              Item  5.    Market for Registrant's Common Equity and Related Stockholder Matters ..22

              Item  6.    Selected Financial Data ................................................22

              Item  7.    Management's Discussion and Analysis of
                            Financial Condition and Results of Operations ........................22

              Item 7A.    Quantitative and Qualitative Disclosures About Market Risk .............22

              Item  8.    Financial Statements and Supplementary Data ............................22


                                       3



                                                                                            
              Item  9.    Changes in and Disagreements with Accountants on Accounting and
                            Financial Disclosure .................................................22

              Item 9A.    Controls and Procedures ................................................23

         PART III

              Item 10.    Directors and Executive Officers of the Registrant .....................24

              Item 11.    Executive Compensation .................................................24

              Item 12.    Security Ownership of Certain Beneficial Owners and
                            Management and Related Stockholder Matters ...........................24

              Item 13.    Certain Relationships and Related Transactions .........................24

              Item 14.    Principal Accountant Fees and Services .................................24

         PART IV

              Item 15.    Exhibits, Financial Statement Schedules, and Reports on Form 8-K .......25

         Signatures ..............................................................................26

         Exhibit Index ...........................................................................28


                                       4


                                     PART I

Item 1   Business.

              Forward Looking Statements

              This  annual  report,  including  all  documents  incorporated  by
              reference,  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;   changes   in   regulatory
              commissions' policies and procedures; the timeliness of regulatory
              commissions'  actions  concerning  rate relief;  new  legislation;
              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.  We
              assume no obligation to provide public updates of  forward-looking
              statements.

     a.  General Development of Business

              California  Water Service Group is a holding company  incorporated
              in Delaware with five  operating  subsidiaries:  California  Water
              Service  Company  (Cal  Water),   CWS  Utility  Services  (Utility
              Services),  New Mexico Water Service  Company (New Mexico  Water),
              Washington  Water Service  Company  (Washington  Water) and Hawaii
              Water Service Company,  Inc. (Hawaii Water). Cal Water, New Mexico
              Water,  Washington  Water and Hawaii  Water are  regulated  public
              utilities.  The  regulated  utility  entities  also  provide  some
              non-regulated  services.  Utility Services provides  non-regulated
              services to private companies and municipalities.

              Cal Water,  which began  operation  in 1926,  is a public  utility
              supplying  water  service to 446,000  customers  in 75  California
              communities  through 25 separate  water systems or districts.  Cal
              Water's 24 regulated  systems,  which are subject to regulation by
              the California Public Utilities  Commission (CPUC),  serve 439,900
              customers. An additional 6,100 customers receive service through a
              long-term  lease of the City of  Hawthorne  system  by Cal  Water,
              which is not subject to CPUC  regulation.  Cal Water  accounts for
              96% of the total customers and 96% of the total operating revenue.

              Washington   Water   started   operations   in  1999  through  the
              acquisition  of two water  companies.  It provides  domestic water
              service  to 14,700  customers  in the Tacoma  and  Olympia  areas.
              Washington   Water's  utility  operations  are  regulated  by  the
              Washington  Utilities and  Transportation  Commission.  Washington
              Water  accounts for 3% of the total  customers and 2% of the total
              operating revenue.

                                       5


              New Mexico  Water  began  providing  non-regulated  meter  reading
              services in 2000,  and assumed  regulated  operations in July 2002
              with the purchase of the assets of Rio Grande Utility Corporation.
              New  Mexico  Water  provides  service  to 2,400  water  and  1,700
              wastewater  customers  south  of  Albuquerque,   New  Mexico.  Its
              regulated  operations are subject to the  jurisdiction  of the New
              Mexico Public Regulation Commission. New Mexico Water accounts for
              1% of the total customers and 1% of the total operating revenue

              Hawaii  Water  was  formed  in May 2003  with the  acquisition  of
              Kaanapali Water  Corporation.  Hawaii Water provides water service
              to 500  customers on the island of Maui,  including  several large
              resorts and condominium  complexes.  Its regulated  operations are
              subject  to  the  jurisdiction  of  the  Hawaii  Public  Utilities
              Commission.  Hawaii  Water  accounts for less than 1% of the total
              customers and 1% of the total operating revenue.

              Utility Services has only  non-regulated  activities.  Included in
              Utility  Services  operations is a long-term  lease agreement with
              the City of Commerce which serves  approximately  1,100 customers.
              Non-regulated  activities  are  primarily  contracted  in  Utility
              Services and include  contracting with other private companies and
              municipalities  to operate water systems and provide meter reading
              and  billing  services.  Other  non-regulated  activities  include
              leasing  communication  antenna  sites,  operating  recycled water
              systems,  providing brokerage services for water rights, providing
              lab  services  and  selling  non-utility  property.   Due  to  the
              different  mix of services we provide,  customers  are not tracked
              for  non-regulated  activities.  Excluding sales of  non-operating
              property,  non-regulated  activities comprised 6% of the total net
              income in 2003.

              The  regulatory  entities  governing our regulated  operations are
              referred  to  as  the  Commissions  in  this  report.   Rates  and
              operations for regulated customers are subject to the jurisdiction
              of the respective state's regulatory  commission.  The Commissions
              require  that  water  and  wastewater  rates  for  each  regulated
              district be independently determined. The Commissions are expected
              to authorize rates sufficient to recover normal operating expenses
              and  allow the  utility  to earn a fair and  reasonable  return on
              capital.  Rates  for the City of  Hawthorne  and City of  Commerce
              water  systems are  established  in  accordance  with an operating
              agreement and are subject to  ratification  by the respective city
              council.  Fees for  other  non-regulated  activities  are based on
              contracts negotiated between the parties.

              Our mailing address and contact information are:
                  California Water Service Group
                  1720 North First Street
                  San Jose, California 95112-4598
                  telephone number: 408-367-8200
                  www.calwatergroup.com

              Our annual reports on Form 10-K,  quarterly  reports on Form 10-Q,
              current  reports on Form 8-K and  amendments  to these reports are
              available  free of  charge  through  our  website.  We make  these
              reports  available  on our  website on the same day they appear on
              the SEC's website.

              During the year ended December 31, 2003, there were no significant
              changes in the kind of  products  produced or services we rendered
              or those provided by our operating subsidiaries, or in our markets
              or methods of distribution.

                                       6



       b.     Financial Information about Industry Segments

              We  operate  primarily  in one  business  segment,  the supply and
              distribution   of  water  and  providing   water-related   utility
              services.

       c.     Narrative Description of Business

              California Water Service Group is the sole shareholder of the five
              operating  subsidiaries:  California  Water Service  Company,  New
              Mexico Water Service  Company,  Washington  Water Service Company,
              Hawaii Water Service Company, Inc. and CWS Utility Services.

              We  conduct  business  through  our  operating  subsidiaries.  Our
              business   consists   of  the   production,   purchase,   storage,
              purification,   testing,   distribution  and  sale  of  water  for
              domestic,  industrial,  public and  irrigation  uses, and for fire
              protection.   We  also  provide   water-related   services   under
              agreements with  municipalities  and other private companies which
              are non-regulated.  The non-regulated  services include full water
              system   operation,   and  billing  and  meter  reading  services.
              Nonregulated  operations  also include the lease of  communication
              antenna  sites,  lab  services  and water  rights  brokerage.  Our
              earnings may be significantly enhanced by the sale of non-utility,
              surplus real property.

              The operating results from the water business fluctuate  according
              to the  demand for water  which is often  influenced  by  seasonal
              conditions,  such as summer  temperatures or the amount and timing
              of precipitation  in our service areas. Our revenue,  expenses and
              income are  affected  by changes in water  sales.  Costs,  such as
              payroll and benefits,  depreciation,  interest  rates on long-term
              debt and  property  taxes  are  more  predictable,  remain  fairly
              constant,  and are not significantly impacted by variations in the
              amount of water  sold.  As a result,  earnings  are highest in the
              high use, warm weather summer months and lowest in the cool winter
              months when most rainfall takes place in our service territories.

              We  distribute  water in accordance  with  accepted  water utility
              methods.  Where applicable,  we hold franchises and permits in the
              cities  and  communities  where we  operate.  The  franchises  and
              permits  allow us to operate  and  maintain  facilities  in public
              streets and right of ways as necessary.

              We operate the City of  Hawthorne  and the City of Commerce  water
              systems  under  lease  agreements.  In  accordance  with the lease
              agreements,  we receive all revenue from operating the systems and
              we are  responsible  for paying the operating  costs.  Under other
              contract arrangements, we operate municipally owned water systems,
              privately  owned water  systems and  recycled  water  distribution
              systems, but we are not responsible for all operating costs. These
              contracts are fee per service,  fixed-fee or cost-plus  contracts.
              We also  provide  billing  and  customer  services  to a number of
              municipalities.

              We intend  to  continue  exploring  opportunities  to  expand  our
              regulated  and  nonregulated  businesses  in  the  western  United
              States. The opportunities could include system acquisitions, lease
              arrangements  similar  to the  City of  Hawthorne  contract,  full
              service system operation and maintenance agreements, meter reading
              and billing  contracts  and other  utility  related  services.  We
              believe that a holding  company  structure  facilitates  providing
              non-regulated   utility   services,   which  are  not  subject  to
              Commission jurisdiction.

                                       7


         Geographical Service Areas and Number of Customers at Year-end

         Our principal  markets are users of water within our service areas. Our
         geographical  service  areas or districts are  regulated.  In addition,
         City of Hawthorne and City of Commerce are included due to similarities
         in  structure  and  risk  of  operations.  The  approximate  number  of
         customers served in each area are listed below:

                                       8


Regulated  Customers,  City of  Hawthorne  and  City of  Commerce  Customers  at
December 31, 2003


                                                                               
         SAN FRANCISCO BAY AREA
           Mid-Peninsula (serving San Mateo and San Carlos)                       36,100
           South San Francisco (including Colma and Broadmoor)                    16,600
           Bear Gulch (serving Menlo Park, Atherton, Woodside
             and Portola Valley)                                                  17,600
           Los Altos (including portions of Cupertino, Los Altos Hills,
             Mountain View and Sunnyvale)                                         18,400
           Livermore                                                              17,600
                                                                                 -------
                                                                                 106,300
                                                                                 -------
         SACRAMENTO VALLEY
           Chico (including Hamilton City)                                        25,200
           Oroville                                                                3,500
           Marysville                                                              3,800
           Dixon                                                                   2,900
           Willows                                                                 2,300
           Redwood Valley (Lucerne, Duncans Mills, Guerneville, Dillon
             Beach, portion of Santa Rosa)                                         1,900
                                                                                 -------
                                                                                  39,600
                                                                                 -------
         SALINAS VALLEY
           Salinas                                                                27,700
           King City                                                               2,300
                                                                                 -------
                                                                                  30,000
                                                                                 -------
         SAN JOAQUIN VALLEY
           Bakersfield                                                            60,900
           Stockton                                                               42,000
           Visalia                                                                33,300
           Selma                                                                   5,600
           Kern River Valley (Bodfish, Kernville, Lakeland, Mountain
             Shadows, Onyx, Squirrel Valley, South Lake and Wofford Heights)       4,200
           Antelope Valley (Fremont Valley, Lake Hughes, Lancaster and
             Leona Valley)                                                         1,300
                                                                                 -------
                                                                                 147,300
                                                                                 -------
         LOS ANGELES AREA
           East Los Angeles (including portions of
             the cities of Commerce and Montebello)                               27,600
           Hermosa Redondo (serving Hermosa Beach,
             Redondo Beach and a portion of Torrance)                             25,900
           Dominguez (Carson and portions of Compton, Harbor City,
             Long Beach, Los Angeles and Torrance)                                33,400
           Palos Verdes (including Palos Verdes Estates, Rancho Palos Verdes,
             Rolling Hills Estates and Rolling Hills)                             23,900
           Westlake (a portion of Thousand Oaks)                                   7,000
           Hawthorne (leased municipal system)                                     6,100
                                                                                 -------
                                                                                 123,900
                                                                                 -------

         CALIFORNIA TOTAL                                                        447,100

         NEW MEXICO                                                                4,100

         HAWAII                                                                      500
                                                                                 -------

         WASHINGTON                                                               14,700
                                                                                 -------

               COMPANY TOTAL                                                     466,400


                                       9


         Rates and Regulation

         Our water  utility  rates and service for the  regulated  business  are
         subject to the  jurisdiction of the state regulatory  commissions.  The
         Commissions'  decisions  and the timing of those  decisions  can have a
         significant impact on our operations and earnings.

         Since  our  24  California   regulated   operating  districts  are  not
         physically integrated, rates are set independently for each district as
         required by the CPUC. General office (headquarters)  expenses and plant
         investments  are  considered  separately  and allocated  ratably to the
         operating districts.

         General and Step Rate Increases

         General rate case (GRC) applications in California address district and
         general  office   operating  costs  and  capital   requirements  for  a
         forward-looking three-year period. GRC decisions typically authorize an
         immediate  rate  increase  and  annual  step  rate  increases  for  the
         three-year  cycle.  Step rate increases are generally  effective at the
         start of each calendar year, and are designed to maintain the return on
         equity (ROE)  authorized in the initial  decision in succeeding  years.
         Effective  January  1,  2003,  we are  required  to file a GRC for each
         operating  district every three years. Cal Water's GRC applications are
         normally  submitted  in July  of each  year.  According  to the  CPUC's
         processing  time line,  a final  decision  should be expected  about 12
         months  after the filings are  accepted by the CPUC.  During  2003,  we
         received  decisions  for our 2001 GRC  applications  in  September,  26
         months after they were submitted.  We expect to return to a more normal
         cycle for the 2004  filings.  The 2002 GRC was re-filed in January 2003
         and approval was received for interim rate  increases for inflation and
         establishment  of an  effective  date of October  2003.  Except for the
         interim  rate  increases,  GRC filings  initiated  in 2002 and 2003 are
         pending as of the date of this report.

         Because districts are on different three-year GRC rate case cycles, the
         number of customers affected by GRC filings varies from year to year.

         Water rates for our  Washington  Water and New Mexico  Water  regulated
         operations  are set based on historic  12-month data. We are allowed to
         submit GRC applications annually.  Water rates for Hawaii Water are set
         based on a  forward-looking  methodology  and are  allowed  to be filed
         annually.  In these  states,  regulatory  procedures do not provide for
         step rate increases or offset increases.

         Offsettable Expenses and Balancing Accounts

         In  California,  we charge to expense  increases  in  purchased  water,
         purchased power and pump taxes as they are incurred. Expenses for these
         categories  above levels included in prior GRC decisions are tracked in
         off-line expense balancing or memorandum  accounts.  The cost increases
         are referred to as "offsetable  expenses".  When the CPUC  authorizes a
         rate  increase to recover  the costs  tracked in expense  balancing  or
         memorandum accounts, the rate increase is referred to as an offset rate
         increase.  We do not record revenue  related to the balancing  accounts
         until  authorized by the CPUC, and then only as the increased costs are
         included  in  customers'  monthly  billings.   Currently,  recovery  of
         balancing and memorandum  accounts is subject to limitation  based on a
         review of district  earnings for the past  calendar  year.  If recorded
         return on net utility plant (rate base) exceeds the rate  authorized by
         the Commission,  recovery of the balancing  account balance is adjusted
         by the amount of earnings above the authorized return.

         See  Item  7,  "Management's   Discussion  and  Analysis  of  Financial
         Condition and Results of Operations--  RATES AND  REGULATIONS"  section
         for more information on rates and regulation.

         Water Supply

         Cal Water  obtains  its water  supply  from  wells,  surface  runoff or
         diversion,  and by purchase  from public  agencies and other  wholesale
         suppliers.  Our  supply  has been  adequate  to meet  customer  demand;
         however,   during  periods  of  drought  some  of  our  districts  have
         experienced  mandatory  water  rationing.   California's  rainy  season
         usually  begins in November and continues  through March with December,
         January and

                                       10


         February  historically  recording  the  most  rainfall.  During  winter
         months,   reservoirs  and  underground   aquifers  are  replenished  by
         rainfall.  Snow  accumulated  in the  mountains  provides an additional
         water  source when  spring and summer  temperatures  melt the  snowpack
         producing  runoff into streams and  reservoirs,  and also  replenishing
         underground aquifers.

         Washington  and Hawaii  receive  rain in all seasons  with the majority
         falling  during winter months.  Washington  Water and Hawaii Water draw
         all their water supply by pumping from wells.

         New  Mexico  Water's  normal  rainfall  occurs in all  seasons,  but is
         heaviest in the summer  monsoon  season.  New Mexico Water pumps all of
         its water supply from wells based on its water rights.

         Our water  business is seasonal  in nature and weather  conditions  can
         have a  pronounced  effect on  customer  usage  and thus our  operating
         revenues and net income.  Customer  demand for water generally is lower
         during the normally cooler and rainy winter months. Demand increases in
         the spring when warmer weather returns and the rains end, and customers
         use more water for outdoor purposes, such as landscape irrigation. Warm
         temperatures during the generally dry summer months result in increased
         demand.  Water usage declines during the fall as temperatures  decrease
         and the rainy season begins.

         During  years in which  precipitation  is  especially  heavy or extends
         beyond the spring into the early summer,  customer  demand can decrease
         from historic  normal  levels,  generally due to reduced  outdoor water
         usage. Likewise, an early start to the rainy season during the fall can
         cause a  decline  in  customer  usage  and have a  negative  impact  on
         revenue.  When summer temperatures are cooler than normal,  water usage
         is generally  lower and can result in us receiving  lower revenue and a
         reduction in our  earnings.  A warmer than normal  summer can result in
         higher customer usage and an increase in our revenue.

         During years of less than normal rainfall, customer demand can increase
         as  outdoor  water  usage  continues  into the fall  and  winter.  When
         rainfall is below average for consecutive years, drought conditions can
         develop and certain customers may be required to reduce  consumption to
         preserve available supply. As an example,  from 1987 to 1993 California
         experienced a six-year period when rainfall was annually below historic
         average.  The drought  period ended with the winter of 1992-93.  During
         that period, some of our districts issued water-rationing  requirements
         to their customers.  In certain  districts,  penalties were assessed on
         customers  who exceeded  monthly  allotments  which was approved by the
         CPUC. During past drought periods,  the CPUC has allowed  modifications
         to our customer  billings that provided us a means to recover a portion
         of revenue that was deemed lost due to conservation measures.

         As noted  above,  Washington  Water,  New Mexico Water and Hawaii Water
         obtain their entire water supply from wells.  Historically,  about half
         of Cal Water's water supply is purchased from wholesale  suppliers with
         the balance pumped from wells. During 2003, approximately 49 percent of
         the Cal Water supply was obtained from wells,  49 percent was purchased
         from  wholesale  suppliers  and 2 percent  was  obtained  from  surface
         supplies.  Well water is generally less expensive and Cal Water strives
         to maximize the use of its well sources in districts  where there is an
         option between well or purchased supply sources.

         We have five California water treatment plants in our Bakersfield, Bear
         Gulch,  Kernville,  Oroville and Redwood Valley districts.  A new plant
         was put into service during 2003 in Bakersfield,  with a capacity of 20
         million gallons per day. Water for operation of the plant is drawn from
         the Kern River under a long-term contract with the City of Bakersfield.
         We removed from service the  existing,  smaller  Bakersfield  treatment
         plant when the new plant became fully functional. The other four plants
         have a capacity of 13 million gallons per day.

         During  2003,  we  delivered  132  billion  gallons  of  water  to  our
         customers,  approximately  the same amount as in 2002. Our 2003 average
         daily  water  production  was 361  million  gallons,  while the maximum
         single day production was 661 million gallons.  By comparison,  in 2002
         our average  daily  water  production  was 352 million  gallons and the
         maximum single day production was 647 million gallons.

                                       11


         The  following  table shows the quantity of water we purchased  and the
         percentage  of  purchased  water  to  total  water  production  in each
         California operating district during 2003.



                                           (MG)
                                          Water
                                        Production      Supply
District                                Purchased     Purchased    Source of Purchased Supply
- --------                                ---------     ---------    --------------------------

                                                     
SAN FRANCISCO BAY AREA
    Mid-Peninsula                             5,990        100%    San Francisco Water Department
    South San Francisco                       3,277        100%    San Francisco Water Department
    Bear Gulch                                4,089         91%    San Francisco Water Department
    Los Altos                                 3,360         70%    Santa Clara Valley Water District
    Livermore                                 2,789         72%    Alameda County Flood Control and Water
                                                                   Conservation District

SACRAMENTO VALLEY
    Oroville                                    984         93%    Pacific Gas and Electric Co. and County
                                                                   of Butte
    Redwood Valley                              154         74%    County of Lake

SAN JOAQUIN VALLEY
    Antelope/Kern                                92         12%    Antelope Valley East Kern Water District
    Bakersfield                               5,085         20%    Kern County Water Agency and City of
                                                                   Bakersfield

    Stockton                                  6,557         61%    Stockton-East Water District

LOS ANGELES AREA
    East Los Angeles                          4,966         74%    Central Basin Municipal Water District
    Dominguez                                10,777         80%    West Basin and Central Basin Municipal
                                                                   Water Districts

    City of Commerce                             95         27%    West Basin Municipal Water District
    Hawthorne                                 1,597        100%    West Basin Municipal Water District
    Hermosa Redondo                           3,810         80%    West Basin Municipal Water District
    Palos Verdes                              6,725        100%    West Basin Municipal Water District
    Westlake                                  2,918        100%    Calleguas Municipal Water District


         MG = million gallons

         The balance of our required  supply for the above districts is obtained
         principally from wells. In our Bear Gulch district, we obtain a portion
         of the water supply from surface  runoff from the local  watershed.  In
         our Oroville  and Redwood  Valley  districts,  the water we purchase is
         from a surface supply.  The surface  sources are processed  through our
         water  treatment  plants  before being  delivered  to the  distribution
         system.  In our Bakersfield  district,  we purchase surface supply then
         process the water through our  treatment  plant.  In addition,  we also
         purchase treated water as a component to our water supply.

         The Chico,  Marysville,  Dixon and Willows  districts in the Sacramento
         Valley,  the Salinas and King City districts in the Salinas Valley, and
         the Selma and Visalia  districts in the San Joaquin Valley obtain their
         entire supply from wells.

         Our purchases for the Los Altos, Livermore,  Oroville,  Redwood Valley,
         Stockton and Bakersfield  districts are pursuant to long-term contracts
         expiring on various dates after 2011.

                                       12


         The water  supplies we purchase  for the  Dominguez,  East Los Angeles,
         Hermosa-Redondo,  Palos  Verdes,  and Westlake  districts,  the City of
         Hawthorne system and the City of Commerce system are provided by public
         agencies   pursuant   to   a   statutory    obligation   of   continued
         non-preferential service to purveyors within the agencies' boundaries.

         Purchases  for the South San  Francisco,  Mid-Peninsula  and Bear Gulch
         districts are in accordance  with long-term  contracts we have with the
         San Francisco Water Department (SFWD) expiring on June 30, 2009.

         We  anticipate  that we will be able to renew each of the water  supply
         contracts as they expire.  The price of  wholesale  water  purchases is
         subject to pricing changes imposed by the various wholesale  suppliers.
         Price changes are generally beyond our control.  We expect that we will
         be allowed to recover the wholesale water  suppliers' rate increases in
         customer  future rates,  although  recovery is subject to a decision by
         the CPUC.

         Shown  below are  wholesaler  price  rates and  increases  that  became
         effective for our operating districts in 2003, and estimated wholesaler
         price rates changes for 2004.



                                         2003                                       2004
                            Effective   Percent                       Effective    Percent
             District        Month      Change      Unit Cost          Month       Change      Unit Cost
             --------        -----      ------      ---------          -----       ------      ---------

                                                                             
          Antelope/Kern        July       29.4%        $220/af           July        0.0%         $220/af
          Bakersfield *        July      -16.1%         115/af           July       18.3%          136/af
          Bear Gulch           July       25.0%       1.10/ccf           July        9.1%        1.20/ccf
          City of Commerce     Jan        -3.4%         510/af           Jan         2.0%          520/af
          Dominguez            Jan        -3.4%         510/af           Jan.        2.0%          520/af
          East Los Angeles     July       -4.4%         457/af           July        2.2%          467/af
          Hawthorne            Jan        -3.4%         510/af           Jan.        2.0%          520/af
          Hermosa Redondo      Jan        -3.4%         510/af           Jan.        2.0%          520/af
          Livermore            Jan.        2.5%      1.290/ccf           Jan.        0.0%       1.290/ccf
          Los Altos            July        9.5%         460/af           July        7.6%          495/af
          Oroville             Jan         0.0%      69,200/yr           Jan.        8.4%       75,000/yr
          Palos Verdes         Jan        -3.4%         510/af           Jan.        2.0%          520/af
          Mid Peninsula        July       25.0%       1.10/ccf           July        9.1%        1.20/ccf
          Redwood Valley       May         5.0%       43.97/af           May         0.0%        43.97/af
          So. San Francisco    July       25.0%       1.10/ccf           July        9.1%        1.20/ccf
          Stockton             April      46.6%     342,146/mo           April      12.8%      385,800/mo
          Westlake             Jan.        0.7%         564/af           Jan.        1.8%          574/af


         af = acre foot;  ccf = hundred cubic feet; yr = fixed annual cost; mo =
         fixed monthly cost * treated water

         See  Item  7,  "Management's   Discussion  and  Analysis  of  Financial
         Condition and Results of Operations - WATER SUPPLY" concerning adequacy
         of supplies.

         We continue to work with all local  suppliers and agencies  responsible
         for water supply to insure we have adequate,  long-term supply for each
         system.

         Nonregulated Operations

         Our  nonregulated   operations   include  full  service  operation  and
         maintenance of water systems for cities and private  owners,  operation
         of  recycled  water  systems,  utility  billing  services,   laboratory
         services,  water  rights  brokering,  sales of surplus  properties  and
         leases of antenna sites.

         Nonregulated  revenue that we receive from water system  operations  is
         generally determined on a fee per customer basis. With the exception of
         our  agreement  for  operation  of the  City of  Hawthorne  and City of
         Commerce  water  systems,   revenue  and  expenses  from   nonregulated
         operations  are  accounted  for in other

                                       13


         income and expense on a pretax basis in the Consolidated  Statements of
         Income.  We include  revenue and expenses for the City of Hawthorne and
         City of Commerce  lease in  operating  revenue and  operating  expenses
         because  we are  entitled  to  retain  all  customer  billings  and are
         generally responsible for all operating expenses.

         We operate  municipally  owned water  systems  under  contract  for the
         various cities which collectively  contribute less than 5% of total net
         income. In Washington,  we operate numerous private water systems under
         contract  arrangements.  The City of Hawthorne lease is a 15 year lease
         and expires in 2011.  The City of Commerce lease is a 15 year lease and
         expires in 2018.  The terms of other  operating  agreements  range from
         one-year to three-year periods with provisions for renewals.

         We provide  meter  reading and  customer  billing  services for several
         municipalities  in  California  and in New Mexico for the County of Los
         Alamos. We also provide sewer and/or refuse billing services to several
         municipalities.

         Since  February  1996,  we have  operated the City of  Hawthorne  water
         system under terms of a 15-year agreement. The system, which is located
         near our  Hermosa-Redondo  district,  serves about half of  Hawthorne's
         population.  The lease  required  us to make an up-front  $6.5  million
         lease payment to the city which we are amortizing  over the lease term.
         Additionally, we make annual lease payments to the city of $0.1 million
         indexed to changes in water rates.  Under the lease, we are responsible
         for all aspects of system operation and capital improvements,  although
         title to the system and system  improvements  reside with the city.  At
         the end of the lease,  the city is  required  to  reimburse  us for the
         unamortized  value of capital  improvements  we made during the term of
         the lease.  In exchange,  we receive all revenue from the water system,
         which was $5.4 million in 2003.

         In July 2003, we  negotiated an agreement  with the City of Commerce to
         lease and operate its water system,  and are operating  under the terms
         of the lease. At this time, the lease has not been formally executed by
         the  parties.  The lease  requires  us to pay $0.8  million per year in
         monthly installments and pay $200 dollars per acre foot for water usage
         exceeding  2,000  acre  feet  per year  plus a  percentage  of  certain
         operational savings that may be realized. Under the lease agreement, we
         are responsible for all aspects of the system's operations. The City is
         responsible for capital expenditures and title to the system and system
         improvements  resides  with the city.  We have risks of  operation  and
         collection of amounts billed to customers.  The agreement has a process
         to request rate  increases  for costs  outside of our control and other
         cost  increases.  In exchange,  we receive all revenue from the system,
         which was $0.8 million for the six month period ended December 2003.

         During  1997,  we signed an  agreement  with the Rural North  Vacaville
         Water  District  near our Dixon  district  to design  and build a water
         distribution system.  Construction of the system has been completed and
         we began  operating  the system in February  2003 under a contract with
         the water  district.  The new system will  initially  provide  water to
         about 300 customers.

         We lease  antenna  sites to  telecommunication  companies  which  place
         equipment at various sites.  Individual  lease payments range from $700
         to $2,600  dollars per month.  The antennas are used in cellular  phone
         and personal communication  applications.  We continue to negotiate new
         leases for similar uses.

         We provide laboratory services to San Jose Water Company and Great Oaks
         Water  Company and for the systems  that we serve under  operation  and
         maintenance agreements, and for numerous small water systems.

         Utility Plant Construction

         We continually  extend,  enlarge and replace our facilities as required
         to meet increasing demands and to maintain the water systems. We obtain
         construction  financing from  operations,  short-term bank  borrowings,
         advances for construction and contributions in aid of construction that
         are funded by developers.  The amounts  received from these sources are
         shown in our "Statements of Cash Flows" in our annual report,  which is
         incorporated into this document by reference. Advances for construction
         are cash

                                       14


         deposits from developers for  construction of water facilities or water
         facilities   deeded  from   developers.   The  advances  are  generally
         refundable  without  interest over a period of 40 years by equal annual
         payments. Contributions in aid of construction consist of nonrefundable
         cash deposits or facilities transferred from developers,  primarily for
         fire protection and relocation  projects.  We cannot control the amount
         received from developers.  This amount  fluctuates from year to year as
         the level of  construction  activity  carried on by developers  varies.
         This  activity  is  impacted  by the  demand  for  housing,  commercial
         development and general business conditions, including interest rates.

         See  Item  7,  "Management's   Discussion  and  Analysis  of  Financial
         Condition and Results of Operations - LIQUIDITY AND CAPITAL  RESOURCES"
         for additional information.

         Sale of Surplus Real Properties

         When  properties  are no longer  used and  useful  for  public  utility
         purposes,  we are no longer  allowed to earn a return on our investment
         in the property in the regulated business.  The surplus property may be
         transferred  out of the  regulated  operations  and can be offered  for
         sale.  Income from the sale of surplus  properties  depends not only on
         changes in operations, but also on local real estate market conditions.

         California Energy Situation

         Our business  uses  electrical  power  primarily to pump water from our
         sources and move it through the  distribution  systems.  The California
         energy  crisis was well  publicized.  In response to supply  shortages,
         electric  power  rates were  increased  significantly  in prior  years.
         Electricity  rates stabilized  during 2003 and we received credits from
         the electrical power companies.  Expenses in electrical power costs are
         described in Item 7, "Management's Discussion and Analysis of Financial
         Condition and Results of Operations - RESULTS OF OPERATIONS."

         There is still  uncertainty  about the state's  ability to avoid future
         rolling  electric  blackouts,  although we did not experience any major
         electric blackouts during 2003. We continue to use power as efficiently
         as we believe  possible  and at the lowest  cost to our  customers.  We
         maintain  backup  power  systems  to  continue  water  service  to  our
         customers if the power companies' supplies are interrupted. Many of our
         well  sites  are  equipped  with  emergency  electric  generators.  The
         generators  are  designed  to  produce  electricity  to keep the  wells
         operating  during power outages.  Storage tanks also provide  customers
         with water during blackout periods.

         Security at Company Facilities

         We have  heightened  security  at our  facilities  and have taken added
         precautions  to safeguard our employees and the water we deliver to our
         customers.  While we do not make public  comments  about the details of
         our security programs, we have been in contact with federal,  state and
         local law enforcement agencies to coordinate and improve water delivery
         systems  security.  In 2002,  Federal  legislation  was  enacted  which
         resulted in new regulations  concerning  security of water  facilities,
         including  submitting  vulnerability  assessment studies to the Federal
         Government. The timing of submission of these studies was based on size
         of operations. We have submitted the studies that are required and plan
         to complete this program in 2004.

         Quality of Water Supplies

         We maintain operating  practices to produce potable water in accordance
         with accepted water utility practices.  Water entering the distribution
         systems from surface  sources is treated in compliance with federal and
         state Safe Drinking Water Acts (SWDA) standards. Most well supplies are
         chlorinated for disinfection.  Water samples from each water system are
         analyzed on a regular,  scheduled  basis in compliance  with regulatory
         requirements.  We operate a state certified water quality laboratory at
         our San Jose General  Office  facility that  provides  testing for most
         California operations.  Certain tests in California are contracted with
         independent certified labs qualified under the Environmental Laboratory
         Accreditation  Program.  Local independent state certified labs provide
         water  sample  testing  for  the  Washington,  New  Mexico  and  Hawaii
         operations.

                                       15


         In recent  years,  federal and state  water  quality  regulations  have
         continued to increase water testing requirements. The SDWA continues to
         be amended to reflect  new public  health  concerns.  We monitor  water
         quality and upgrade our treatment  capabilities to maintain  compliance
         with the various regulations.

         Competition and Condemnation

         Our operating companies,  Cal Water, Washington Water, New Mexico Water
         and Hawaii Water are regulated public utilities providing water service
         within filed  service  areas  approved by the  Commissions.  New Mexico
         Water also provides regulated wastewater services. Under state laws, no
         privately owned public utility may compete within any service territory
         that we already serve without first  obtaining a certificate  of public
         convenience  and  necessity  from the  Commission.  Issuance  of such a
         certificate  would  only be made  upon  finding  that  our  service  is
         deficient.  To our knowledge,  no application to provide  service to an
         area we serve has been made.

         State law provides that whenever a public agency constructs  facilities
         to extend a utility  system into the service area of a privately  owned
         public  utility,  such an act  constitutes  the taking of property  and
         requires  reimbursement  to the  utility for its loss.  State  statutes
         allow municipalities,  water districts and other public agencies to own
         and operate  water  systems.  These  agencies are  empowered to condemn
         properties  already operated by privately owned public  utilities.  The
         agencies are also authorized to issue bonds,  including  revenue bonds,
         for the purpose of acquiring or constructing water systems. However, if
         a public  agency were to acquire  utility  property  by eminent  domain
         action,  the utility  would be entitled  to just  compensation  for its
         loss. To our knowledge, no municipality, water district or other public
         agency is contemplating or has any action pending to acquire or condemn
         any of our systems.

         In  recent  years,   consolidation   within  the  water   industry  has
         accelerated.  A number of publicly  traded  water  companies  have been
         acquired or merged into larger domestic companies. Several acquisitions
         of publicly  traded  companies  have also been completed by much larger
         foreign  companies.  We participated in the industry  consolidation  by
         acquiring  Dominguez  Services  Corporation in 2000 and by making other
         small   acquisitions   and  pursuing   expansion  of  our  nonregulated
         operations.  We intend to continue  pursuit of  opportunities to expand
         our business in the western United States.

         Environmental Matters

         Our  operations  are  subject to  environmental  regulation  by various
         governmental authorities. Our environmental affairs program is designed
         to provide  compliance  with  underground and above ground fuel storage
         tank regulations, hazardous materials management plans, hazardous waste
         regulations, air quality permitting requirements,  wastewater discharge
         limitations and employee safety issues related to hazardous  materials.
         We are actively  involved in the  formulation of air quality  standards
         related to water utilities.  Also, we actively investigate  alternative
         technologies for meeting  environmental  regulations and continuing the
         traditional practices of water quality.

                                       16


         Human Resources

         At year-end  2003,  we had 813  employees,  including 41 at  Washington
         Water, 13 at New Mexico Water and 7 at Hawaii Water. We had 802 and 783
         employees  in  2002  and  2001,  respectively.   In  California,   most
         non-supervisory  employees are represented by the Utility Workers Union
         of  America,   AFL-CIO,   except  certain  engineering  and  laboratory
         employees  are   represented   by  the   International   Federation  of
         Professional and Technical  Engineers,  AFL-CIO.  At December 31, 2003,
         there  were 541  union  employees.  In  December  2002,  we  negotiated
         three-year agreements with both unions covering 2003 through 2005. Wage
         increases  under the new agreements are 1% in 2003, 1.5% in 2004 and 2%
         in 2005.  Improvements in employee  benefit plans were also negotiated.
         Employees at Washington Water, New Mexico Water and Hawaii Water do not
         belong to unions.

    d. Financial  Information  about Foreign and Domestic  Operations and Export
         Sales.

         We make no export sales.

Item 2.  Properties.

         Our  physical  properties  consist  of  offices  and water  systems  to
         accomplish the production,  storage,  purification  and distribution of
         water.  These properties are located in or near our Geographic  Service
         Areas  listed  above  in  Item  1.c.  "Narrative   Description  of  the
         Business." Our general office,  which houses  accounting,  engineering,
         information systems,  human resources,  purchasing,  regulatory,  water
         quality and executive  staffs is located in San Jose,  California.  All
         properties are maintained in good operating condition.

         The  real  properties  that  we  own  are  held  in fee  simple  title.
         Properties  owned by Cal Water are  subject to the  indenture  securing
         first  mortgage  bonds of which $27  million  remained  outstanding  at
         December 31, 2003.  Washington  Water has long-term bank loans that are
         secured  primarily by utility plant.  New Mexico Water has  outstanding
         bank loans which are secured by utility plant.

         In Cal Water, we own 620 wells and operate ten leased wells. There were
         382 owned  storage  tanks with a capacity  of 247 million  gallons,  31
         managed  storage tanks with a capacity of 29 million  gallons and three
         reservoirs  with a capacity  of 220  million  gallons.  There are 5,200
         miles of supply and distribution mains in the various systems.

         In Washington  Water,  we own 300 wells and manage 82 wells.  There are
         109 owned  storage  tanks and 28 managed  storage  tanks with a storage
         capacity  of 7.1  million  gallons.  There are 544 miles of supply  and
         distribution lines.

         In New Mexico Water, we own three wells.  There are three storage tanks
         with a storage capacity of 2.5 million  gallons.  There are 44 miles of
         supply and distribution lines.

         In Hawaii Water, we own six wells. There are three storage tanks with a
         storage capacity of 4.5 million  gallons.  There are 40 miles of supply
         and distribution lines.

         In the leased  City of  Hawthorne  and City of  Commerce  systems or in
         systems that we operate under  contract for  municipalities  or private
         companies,  title to the various  properties is held exclusively by the
         municipality or private company.

                                       17


         Water supply, security,  environmental,  condemnation and utility plant
         construction  items  are  discussed  in  Item  1.c,  Narrative  of  the
         Business.  Utility Plant  construction items are also discussed in Item
         7,  "Management's  Discussion  and Analysis of Financial  Condition and
         Results of Operations - LIQUIDITY AND CAPITAL RESOURCES."

Item 3.  Legal Proceedings.

         In 1995,  the  State of  California's  Department  of Toxic  Substances
         Control  (DTSC)  named Cal Water as a potential  responsible  party for
         cleanup of a toxic  contamination  plume in the Chico groundwater.  The
         toxic spill occurred when cleaning solvents, which were discharged into
         the  city's  sewer  system  by  local  dry  cleaners,  leaked  into the
         underground   water   supply.   The  DTSC  contends  that  Cal  Water's
         responsibility  stems from its  operation  of wells in the  surrounding
         vicinity that caused the  contamination  plume to spread.  While we are
         cooperating with the cleanup effort, we deny any responsibility for the
         contamination or the resulting  cleanup and intend to vigorously resist
         any action that may be brought against us. We have negotiated with DTSC
         regarding  dismissal  of Cal Water from the claim in  exchange  for our
         cooperation  in the cleanup  effort.  However,  no  agreement  has been
         reached  with  DTSC  regarding  dismissal  of Cal  Water  from the DTSC
         action.  In December  2002,  Cal Water was named along with eight other
         defendants in a lawsuit filed by DTSC for the cleanup of the plume. The
         suit asserts that the defendants  are jointly and severally  liable for
         the  estimated  cleanup  of $8.7  million.  We believe  that  insurance
         coverage  exists  for this  claim and that if we were  ultimately  held
         responsible  for a portion of the cleanup  costs,  there would not be a
         material  adverse  effect  on our  financial  position  or  results  of
         operations. Our insurance carrier is currently paying the cost of legal
         representation in this matter.

         In 2003,  Cal Water was served with a lawsuit in state court  naming it
         as one of several  defendants for damages alleged to have resulted from
         waste oil contamination in the groundwater in the Marysville  District.
         The suit did not specify a dollar  amount.  We do not believe  that the
         complaint  alleges  any facts under  which we may be held  liable.  The
         Court has twice  dismissed the complaint on various  grounds  raised by
         us, but the Court has continued to grant the  plaintiff  leave to amend
         the complaint.  If necessary,  we intend to vigorously defend the suit.
         In 2002,  the plaintiff in this action brought a suit against Cal Water
         in  federal  court  with  similar  allegations  concerning  groundwater
         contamination.  The suit was dismissed;  however, the Court did not bar
         the  plaintiff  from  filing  a  state  claim.  If an  assessment  were
         determined by a court, we believe that our insurance  policy will cover
         costs related to this matter under the terms of the policy.

         In December  2001, Cal Water and several other  defendants  were served
         with a lawsuit by the estate and immediate family members of a deceased
         employee  of  a  pipeline  construction  contractor.  The  contractor's
         employee  had worked on  various  Cal Water  projects  over a number of
         years.  The plaintiffs  allege that Cal Water and other  defendants are
         responsible  for an  asbestos-related  disease  that is claimed to have
         caused the death of the  contractor's  employee.  The  complaint  seeks
         damages in excess of $0.1 million, in addition to unspecified  punitive
         damages.  We have  denied  responsibility  in the  case and  intend  to
         vigorously  defend ourself against the claim.  Pursuant to an indemnity
         provision  in  the  contracts   between  the  contractor  and  us,  the
         contractor  has  accepted  liability  for the claim  against  us and is
         reimbursing our defense costs.

         In February 2003, the CPUC's Office of Ratepayer Advocates  recommended
         that Cal Water be fined up to $9.6  million and refund $0.5  million in
         revenue for failing to report two acquisitions as required by the CPUC.
         One  acquisition  was  completed  prior to  adoption  of the  reporting
         requirement by the CPUC; the other was inadvertently not reported.  Cal
         Water  acquired the two water systems,  which serve 283 customers,  for
         approximately  $0.1  million.  The  staff's   recommendation  does  not
         challenge  the level of service  provided or amounts  charged for water
         service to the customers; it is based solely on the fact that Cal Water
         failed to report the  acquisitions  to the CPUC. On July 10, 2003,  the
         CPUC issued  Resolution  W-4390.  In this resolution,  the CPUC's staff
         challenged whether Cal Water was properly  authorized to make these two
         acquisitions,  as a result of the  failure  to report.  The  resolution
         grants Cal Water's  request to consult  and work with the CPUC's  Water
         Division  to  resolve  the  matters.

                                       18


         Since the  CPUC's  policy is to  encourage  large  water  utilities  to
         acquire small water  systems,  we believe that a reasonable  resolution
         will be  reached.  At this time,  we cannot  estimate  the costs or the
         timing of the  resolution of these  issues.  We do not believe that the
         staff's recommendation will be upheld when this matter is considered by
         the CPUC.  Accordingly,  no  liability  was  accrued  in the  financial
         statements.

         Periodically,  we are  involved  in  other  proceedings  or  litigation
         arising in the ordinary course of business.  We do not believe that the
         ultimate  resolution  of  these  matters  will  materially  affect  our
         financial position, results of operations or cash flows.

Item 4.  Submission of Matters to a Vote of Security Holders.

         No matters were  submitted to a vote of security  holders in the fourth
         quarter of 2003.

                                       19


Executive Officers of the Registrant



Name                        Positions and Offices with California Water Service Group                Age
- ----                        ---------------------------------------------------------                ---

                                                                                                
Robert W. Foy               Chairman of the Board since January 1, 1996.  A director since            67
(1)                         1977.  Formerly President and Chief Executive Officer of Pacific
                            Storage Company,  a diversified  transportation  and
                            warehousing   company  serving  Stockton,   Modesto,
                            Sacramento,    San   Jose,   Vallejo,   and   Merced
                            California, where he had been employed for 32 years.

Peter C. Nelson             President and Chief Executive Officer since February 1, 1996.             56
(2)                         Formerly Vice President, Division Operations (1994-1995) and
                            Region  Vice  President  (1989-1994),  Pacific Gas &
                            Electric Company, a gas and electric public utility.

Richard D. Nye              Vice President, Chief Financial Officer and Treasurer since               49
(1)                         March 2003. Formerly Acting Chief Financial Officer (2001-2002)
                            and Vice President of Finance and Administration (1998-2002) of
                            Cornerstone Propane Partners, L.P., a propane distribution company,
                            Previously served in various finance management positions with
                            Frito-Lay, Inc., a snack food company (1989-1998).

Paul G. Ekstrom             Corporate Secretary since August 1996; Operations                         51
(3)                         Coordinator, 1993 to 1996; District Manager, Livermore,
                            1988 to 1993;  previously  served in  various  field
                            management  positions  since 1979; an employee since
                            1972.

Calvin L. Breed             Controller, Assistant Secretary and Assistant Treasurer since             48
(4)                         Nov. 1994; previously Treasurer of TCI International, Inc. (1984-1994);
                            a certified public accountant with Arthur Andersen & Co. (1980-1983)


(1)   Holds the same position with California Water Service Company,  New Mexico
      Water Service  Company,  Washington  Water Service  Company,  Hawaii Water
      Service Company, Inc. and CWS Utility Services

(2)   Holds the same position  with  California  Water  Service  Company and CWS
      Utility  Services;  Chief  Executive  Officer of New Mexico Water  Service
      Company,  Washington  Water  Service  Company  and  Hawaii  Water  Service
      Company, Inc.

(3)   Vice President,  Customer  Service with California  Water Service Company,
      and Corporate  Secretary of California Water Service  Company,  New Mexico
      Water Service  Company,  Washington  Water Service  Company,  Hawaii Water
      Service Company, Inc. and CWS Utility Services

(4)   Holds the same position with California Water Service Company



Name                        Positions and Offices with California Water Service Group                Age
- ----                        ---------------------------------------------------------                ---

                                                                                                
Francis S. Ferraro          Vice President, Regulatory Matters and Corporate Development              54
(1)                         since May 2001; Vice President, Regulatory Matters, August 1989
                            to  May  2001.  Employed  by the  California  Public
                            Utilities  Commission  for 16 years,  including 1985
                            through  1989 as an  administrative  law  judge;  an
                            employee since 1989.


                                       20




Name                        Positions and Offices with California Water Service Group                Age
- ----                        ---------------------------------------------------------                ---

                                                                                                

Robert R. Guzzetta          Vice President, Engineering and Water Quality since August 1996;          49
(2)                         Chief Engineer, 1990 to 1996; Assistant Chief Engineer, 1988 to
                            1990; various engineering department positions since 1977.

Christine L. McFarlane      Vice President, Human Resources since August 1996; Director               57
                            of Human Resources, 1991 to 1996; Assistant Director of
                            Personnel, 1989 to 1991; an employee since 1969.

Dan L. Stockton             Vice President, Information Systems since April 2001;                     59
                            from 1991 to 2001 he served as Chief Operating Officer of
                            Great Oaks Water Company.

Raymond H. Taylor           Vice President, Operations since April 1995; Vice President and           58
                            Director of Water Quality, 1990 to 1995; Director of Water Quality,
                            1986 to 1990; an employee since 1982; prior to 1982 an employee of
                            the United States Environmental Protection Agency.


(1)  Also, Vice President,  Corporate Development with CWS Utility Services, and
     Vice President, Regulatory Matters with New Mexico Water Service Company.

(2)  Also, Vice President, Engineering with CWS Utility Services.



Name                        Positions and Offices with California Water Service Group                Age
- ----                        ---------------------------------------------------------                ---

                                                                                                

Michael P. Ireland          President since December 1999; previously President of Harbor Water       50
                            Company, Gig Harbor, Washington from 1985 to 1999.


No  officer  or  director  has any family  relationship  to any other  executive
officer or director.  No executive  officer is appointed for any set term. There
are no agreements or understandings  between any executive officer and any other
person pursuant to which he was selected as an executive officer.

                                       21


                                     PART II

Item 5.  Market for Registrant's Common Equity and Related Stockholder Matters

         Our  common  stock is traded on the New York Stock  exchange  under the
         symbol "CWT". At December 31, 2003, there were 16,932,046 common shares
         and 139,000  preferred  shares  outstanding.  As of December  31, 2003,
         there were 4,500 stockholders of record.

         Additional  information  required  by  this  Item is  contained  in the
         section captioned  "Quarterly Financial Data" in our 2003 Annual Report
         to  Stockholders  and is  incorporated  herein by  reference.  The 2003
         Annual Report to  Stockholders  is included with this report as Exhibit
         13.1.

Item 6.  Selected Financial Data.

         The  information  required  by this Item is  contained  in the  section
         captioned  "Ten-Year  Financial  Review" in our 2003  Annual  Report to
         Stockholders and is incorporated  herein by reference.  The 2003 Annual
         Report to Stockholders is included with this report as Exhibit 13.1.

Item 7.  Management's  Discussion  and  Analysis  of  Financial   Condition  and
         Results of Operations.

         The  information  required  by this Item is  contained  in the  section
         captioned "Management's  Discussion and Analysis of Financial Condition
         and Results of  Operations,"  in our 2003 Annual Report to Stockholders
         and is  incorporated  herein by  reference.  The 2003 Annual  Report to
         Stockholders is included with this report as Exhibit 13.1.

Item 7A  Quantitative and Qualitative Disclosures About Market Risk

         The  information  required  by this Item is  contained  in the  section
         captioned  "Financial  Risk  Management"  in our 2003 Annual  Report to
         Stockholders and is incorporated  herein by reference.  The 2003 Annual
         Report to Stockholders is included with this report as Exhibit 13.1.

Item 8.  Financial Statements and Supplementary Data.

         The  information  required by this Item is contained in the 2003 Annual
         Report to  Stockholders  and is incorporated  herein by reference.  The
         2003 Annual  Report to  Stockholders  is  included  with this report as
         Exhibit 13.1.

Item 9.  Changes  in  and  Disagreements  with  Accountants  on  Accounting  and
         Financial Disclosure.

         None.

                                       22


Item 9A. Controls and Procedures

         (a) Evaluation of Disclosure Controls and Procedures

                  We carried out an  evaluation,  under the  supervision  of and
         with the  participation  of our  management,  including  our  principal
         executive and principal  financial officer, of the effectiveness of the
         design and operation of our  disclosure  controls and  procedures as of
         the  end of the  period  covered  by  this  report,  pursuant  to  Rule
         13a-15(e)  under the  Securities  Exchange Act of 1934.  Based on their
         review  of  our  disclosure  controls  and  procedures,  the  principal
         executive  officer and principal  financial officer have concluded that
         our disclosure controls and procedures are effective in timely alerting
         us to material  information that is required to be included in periodic
         SEC filings.

                  (b) Changes to Internal controls

                  There was no change in our  internal  control  over  financial
         reporting that occurred during the last fiscal quarter of 2003 that has
         materially affected, or is reasonably likely to materially affect, such
         control.

                                       23


                                    PART III

Item 10. Directors and Executive Officers of the Registrant.

         The information required by this Item as to directors of the Company is
         contained  in the sections  captioned  "Board  Structure,"  of the 2004
         Proxy Statement,  "Proposals of the Board; Proposal No. 1 - Election of
         Directors" of the 2004 Proxy  Statement,  and "Other  Matters - Code of
         Ethics"  of the 2004 Proxy  Statement,  and is  incorporated  herein by
         reference.  Information  regarding  executive officers is included in a
         separate  section  captioned  "Executive  Officers  of the  Registrant"
         contained in Part I of this report.

Item 11. Executive Compensation.

         The information required by this Item as to directors of the Company is
         included under the caption "Director Compensation  Arrangements" of the
         2004 Proxy  Statement  and is  incorporated  herein by  reference.  The
         information  required  by this  Item as to  compensation  of  executive
         officers,  including officers who are directors,  is included under the
         caption  "Executive  Compensation"  of the 2004 Proxy  Statement and is
         incorporated herein by reference.

Item 12. Security  Ownership of Certain  Beneficial  Owners and  Management  and
         Related Stockholder Matters.

         The  information  required  by this Item is  contained  in the  section
         captioned "Stock Ownership of Management and Certain Beneficial Owners"
         of the 2004 Proxy Statement and is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions.

         Cal Water  provides  laboratory  services to a subsidiary of SJW Corp.,
         which has  ownership  of over 5% of the common stock  outstanding.  The
         rates charged are  comparable to rates charged to other third  parties.
         The revenue for 2003 was  approximately  $0.1 million.  The revenue and
         income from these activities are not significant to our business.

Item 14. Principal Accountant Fees and Services

         The  information  required  by this Item is  contained  in the  section
         captioned  "Relationship  with Independent  Auditors" of the 2004 Proxy
         Statement and is incorporated herein by reference.

                                       24


                                     PART IV

Item 15. Exhibits, Financial Statement Schedules, and Reports on Form 8-K.

  (a) As part of this Form 10-K, the following documents are being filed:

      1. Financial Statements:

              Consolidated Balance Sheets as of December 31, 2003 and 2002.

              Consolidated Statements of Income for the years ended December 31,
              2003, 2002 and 2001.

              Consolidated   Statements  of  Common   Stockholders'  Equity  and
              Comprehensive  Income for the years ended December 31, 2003,  2002
              and 2001.

              Consolidated Statements of Cash Flows for the years ended December
              31, 2003, 2002 and 2001.

              Notes to  Consolidated  Financial  Statements,  December 31, 2003,
              2002 and 2001.

              Independent Auditors' Report.

              The above financial  statements are contained in sections  bearing
              the same captions in the 2003 Annual Report to Stockholders  which
              is filed with this Form 10-K and incorporated herein by reference.
              Refer to Exhibit 13.1 of this Form 10-K.

      3. Exhibits required to be filed by Item 601 of Regulation S-K:

              The  Exhibit  Index on page 28 of this Form  10-K is  incorporated
              herein by reference.

              The exhibits filed as part of this Form 10-K are attached,  unless
              otherwise indicated. The exhibits listed in the Exhibit Index that
              are not filed with this Form 10-K were  previously  filed with the
              Securities  and Exchange  Commission  as indicated  and are hereby
              incorporated by reference.

  (b) Reports on Form 8-K.

              Reports were  furnished (but not filed) on Form 8-K on October 23,
              2003  regarding  the results for the third  quarter and on January
              28, 2004,  regarding  the results for the 4th quarter and year end
              results for 2003.  Both reports were  furnished  under Item 12 and
              included  condensed  statements  of income and  condensed  balance
              sheets.

  (c) Exhibits required to be filed by Item 601 of Regulation S-K.

              Refer to Item (a) 3 above and the Exhibit Index on page 28 of this
              Form 10-K.

  (d) Additional Financial Statement Schedules.

              No filings are required under this Item.

                                       25


                                   SIGNATURES

Pursuant to the  requirements of Section 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  Registrant  has duly  caused  this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

                                            CALIFORNIA WATER SERVICE GROUP


Date: February 25, 2004                    By /s/ Peter C. Nelson
                                           PETER C. NELSON,
                                           President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following  persons on behalf of the  Registrant and
in the capacities and on the dates indicated:

Date: February 25, 2004                   /s/ Robert W. Foy
                                          ROBERT W. FOY
                                          Chairman, Board of Directors

Date: February 25, 2004                   /s/ Douglas M. Brown
                                          DOUGLAS M. BROWN
                                          Member, Board of Directors

Date: February 25, 2004                   /s/ Edward D. Harris, Jr.
                                          EDWARD D. HARRIS, JR., M.D.
                                          Member, Board of Directors

Date: February 25, 2004                   /s/ Bonnie G. Hill
                                          BONNIE G. HILL
                                          Member, Board of Directors

Date: February 25, 2004                   /s/ David N. Kennedy
                                          DAVID N. KENNEDY
                                          Member, Board of Directors

Date: February 25, 2004                   /s/ Richard P. Magnuson
                                          RICHARD P. MAGNUSON
                                          Member, Board of Directors

Date: February 25, 2004                   /s/ Linda R. Meier
                                          LINDA R. MEIER
                                          Member, Board of Directors

Date: February 25, 2004                   /s/ Peter C. Nelson
                                          PETER C. NELSON
                                          President and Chief Executive Officer,
                                          Principal Executive Officer
                                          Member, Board of Directors

Date: February 25, 2004                   /s/ George A. Vera
                                          GEORGE A. VERA
                                          Member, Board of Directors

                                       26



Date: February 25, 2004                   /s/ Richard D. Nye
                                          RICHARD D. NYE
                                          Vice President, Chief Financial
                                          Officer and Treasurer;
                                          Principal Financial Officer

Date: February 25, 2004                   /s/ Calvin L. Breed
                                          CALVIN L. BREED
                                          Controller, Assistant Secretary and
                                          Assistant Treasurer;
                                          Principal Accounting Officer

                                       27



                                 (all page references will be updated at filing)

                                  EXHIBIT INDEX

Exhibit
Number

     Unless filed with this Form 10-K, the documents  listed are incorporated by
     reference to the filings referred to:

3.   Articles of Incorporation and By-laws:

       3.1     Certificate of  Incorporation  of California  Water Service Group
               (Filed as Exhibit B of the 1999  California  Water  Service Group
               Proxy Statement)

       3.2     Restated  By-laws of California Water Service Group as amended on
               January 26, 2000 (Exhibit E-2 to Form 8-K filed February 3, 2000)

4.   Instruments  Defining the Rights of Security  Holders of  California  Water
     Service Group, including Indentures:

       4.1     Shareholder  Rights Plan; an agreement  between  California Water
               Service Group and BankBoston,  N.A., rights agent,  dated January
               28, 1998 (Exhibit 1 to Form 8-A dated February 13, 1998)

       4.2     Certificate  of  Designations  regarding  Series D  Participating
               Preferred  Stock,  as filed with  Delaware  Secretary of State on
               September 16, 1999 (relating to Shareholder Rights Plan)

       4.3     Thirty-fourth  Supplemental  Indenture  dated as of  November  1,
               1990,  covering First Mortgage 9.86% Bonds, Series CC. (Exhibit 4
               to Form 10-K for fiscal year 1990)

       4.4     Thirty-sixth  Supplemental  Indenture  dated  as of May 1,  1993,
               covering  First Mortgage 7.90% Bonds Series EE (Exhibit 4 to Form
               10-Q dated June 30, 1993)

       4.5     Thirty-seventh  Supplemental  Indenture  dated as of September 1,
               1993,  covering First Mortgage 6.95% Bonds,  Series FF (Exhibit 4
               to Form 10-Q dated September 30, 1993)

       4.6     Thirty-eighth  Supplemental  Indenture  dated as of  October  15,
               1993,  covering First Mortgage 6.98% Bonds,  Series GG (Exhibit 4
               to Form 10-K for fiscal year 1994)

       4.7     Note Agreement  dated August 15, 1995,  pertaining to issuance of
               $20,000,000,  7.28% Series A Unsecured Senior Notes, due November
               1, 2025 (Exhibit 4 to Form 10-Q dated September 30, 1995)

                                       28


       4.8     Note  Agreement  dated March 1, 1999,  pertaining  to issuance of
               $20,000,000,  6.77% Series B Unsecured Senior Notes, due November
               1, 2028 (Exhibit 4.1 to Form 10-K dated December 31, 1999)

       4.9     First  Supplement  dated  October 1, 2000,  to Note  Agreement of
               March 1, 1999,  pertaining  to  issuance  of  $20,000,000,  8.15%
               Series C Unsecured  Senior  Notes,  due November 1, 2030 (Exhibit
               4.10 to Form 10-K dated December 31, 2000)

       4.10    Second  Supplement  dated September 1, 2001, to Note Agreement of
               March 1, 1999,  pertaining  to  issuance  of  $20,000,000,  7.13%
               Series D Unsecured  Senior  Notes,  due November 1, 2031 (Exhibit
               4.1 to Form 10-Q dated September 30, 2002)

       4.11    Third Supplement dated May 1, 2002, to Note Agreement of March 1,
               1999,  pertaining  to issuance  of  $20,000,000,  7.11%  Series E
               Unsecured Senior Notes, due November 1, 2032 (Exhibit 4.1 to Form
               10-Q dated June 30, 2002)

       4.12    Fourth  Supplement  dated August 15, 2002,  to Note  Agreement of
               March 1, 1999, Note Agreement  dated August 15, 2002,  pertaining
               to  issuance of  $20,000,000,  5.90%  Series F  Unsecured  Senior
               Notes,  due  November  1, 2017  (Exhibit  4.14 to Form 10-K dated
               December 31, 2002)

       4.13    Fifth  Supplement  dated  November 1, 2002, to Note  Agreement of
               March 1, 1999,  pertaining  to  issuance  of  $20,000,000,  5.29%
               Series G Unsecured  Senior  Notes,  due November 1, 2022 (Exhibit
               4.15 to Form 10-K dated December 31, 2002)

       4.14    Sixth  Supplement  dated  December 1, 2002, to Note  Agreement of
               March 1, 1999,  pertaining  to  issuance  of  $20,000,000,  5.29%
               Series H Unsecured Senior Notes, due December 1, 2022 (Exhibit 16
               to Form 10-K dated December 31, 2002)

       4.15    Ninth  Supplement  dated  February 15, 2003, to Note Agreement of
               March 1, 1999,  pertaining  to  issuance  of  $10,000,000,  4.58%
               Series K Unsecured  Senior Notes, due June 30, 2010 (Exhibit 4.17
               to Form 10-K dated December 31, 2002)

       4.16    Tenth  Supplement  dated  February 15, 2003, to Note Agreement of
               March 1, 1999,  pertaining  to  issuance  of  $10,000,000,  5.48%
               Series L Unsecured Senior Notes, due March 18, 2018 (Exhibit 4.18
               to Form 10-K dated December 31, 2002)

       4.17    Thirteenth  Supplemental Trust Indenture whereby California Water
               Service   Company   became  the  successor  to  Dominguez   Water
               Corporation in the original trust  indenture for Dominguez  Water
               Corporation dated August 1, 1954 (Exhibit 4.11 to Form 10-K dated
               December 31, 2000)

                                       29


       4.18    Eleventh  Supplemental  Trust  Indenture  dated as of December 8,
               1992, covering First Mortgage 8.86% Bonds, Series J (Exhibit 10.2
               to Form 10-K as of  December  31,  1997,  and filed by  Dominguez
               Services Corporation on March 31, 1998)

       4.19    Twelfth  Supplemental  Indenture  dated as of  December  1, 1997,
               covering First Mortgage 6.94% Bonds, Series K due January 1, 2023
               (Exhibit 10.2 to Form 10-K dated  December 31, 1997, and filed by
               Dominguez Services Corporation on March 31, 1998)

       4.20    Seventh  Supplement dated May 1, 2003, to Note Agreement of March
               1, 1999,  pertaining to issuance of  $10,000,000,  5.54% Series I
               Unsecured  Senior  Notes,  due May 1, 2023  (Exhibit 4.22 to Form
               10-Q dated March 31, 2003)

       4.21    Eighth  Supplement  dated May 1, 2003, to Note Agreement of March
               1, 1999,  pertaining to issuance of  $10,000,000,  5.44% Series J
               Unsecured  Senior  Notes,  due May 1, 2018  (Exhibit 4.22 to Form
               10-Q dated March 31, 2003)

       4.22    Twelfth  Supplement  dated October 23, 2003 to Note  Agreement of
               March 1, 1999, pertaining to the issuance of $20,000,000,  5.55%,
               Series N Unsecured  Senior  Notes due  December 1, 2013  (Exhibit
               4.24 to Form 10-Q filed September 30, 2003)

       4.23    Eleventh  Supplement dated November 3, 2003, to Note Agreement of
               March 1, 1999, pertaining to the issuance of $20,000,000,  5.52%,
               Unsecured  Series M Senior  Notes due  November 1, 2013  (Exhibit
               4.25 to Form 10-Q filed September 30, 2003)

10.    Material Contracts.

       10.1    Water  Supply  Contract  between  Cal Water  and  County of Butte
               relating to Cal Water's Oroville District;  Water Supply Contract
               between Cal Water and the Kern County  Water  Agency  relating to
               Cal Water's Bakersfield  District;  Water Supply Contract between
               Cal  Water and  Stockton  East  Water  District  relating  to Cal
               Water's  Stockton  District.  (Exhibits 5(g),  5(h),  5(i), 5(j),
               Registration   Statement   No.   2-53678,   which   exhibits  are
               incorporated by reference to Form 10-K for fiscal year 1974).

       10.2    Settlement  Agreement and Master Water Sales Contract between the
               City and County of San Francisco and Certain Suburban  Purchasers
               dated August 8, 1984;  Supplement  to  Settlement  Agreement  and
               Master Water Sales Contract,  dated August 8, 1984;  Water Supply
               Contract  between  Cal  Water  and the  City  and  County  of San
               Francisco  relating  to Cal  Water's  Bear Gulch  District  dated
               August 8, 1984;  Water Supply Contract  between Cal Water and the
               City and County of San Francisco  relating to the Cal Water's San
               Carlos  District  dated  August 8, 1984;  Water  Supply  Contract
               between  Cal  Water  and the City  and  County  of San  Francisco
               relating to Cal Water's San Mateo  District dated August 8, 1984;
               Water Supply Contract between

                                       30


               Cal Water and the City and County of San  Francisco  relating  to
               Cal Water's  South San Francisco  District  dated August 8, 1984.
               (Exhibit 10.2 to Form l0-K for fiscal year 1984).

       10.3    Water Supply  Contract dated January 27, 1981,  between Cal Water
               and the Santa Clara Valley Water District relating to Cal Water's
               Los Altos  District  (Exhibit  10.3 to Form 10-K for fiscal  year
               1992)

       10.4    Amendments  No. 3, 6 and 7 and Amendment  dated June 17, 1980, to
               Water Supply  Contract  between Cal Water and the County of Butte
               relating to Cal Water's Oroville District.  (Exhibit 10.5 to Form
               10-K for fiscal year 1992)

       10.5    Amendment  dated May 31, 1977, to Water Supply  Contract  between
               Cal  Water  and  Stockton-East  Water  District  relating  to Cal
               Water's Stockton District.  (Exhibit 10.6 to Form 10-K for fiscal
               year 1992)

       10.6    Second Amended  Contract dated September 25, 1987, among Stockton
               East Water District,  California Water Service Company,  the City
               of Stockton,  the Lincoln Village Maintenance  District,  and the
               Colonial Heights  Maintenance  District Providing for the Sale of
               Treated Water. (Exhibit 10.7 to Form 10-K for fiscal year 1987)

       10.7    Water  Supply  Contract  dated April 19, 1927,  and  Supplemental
               Agreement  dated June 5, 1953,  between Cal Water and Pacific Gas
               and Electric Company  relating to Cal Water's Oroville  District.
               (Exhibit 10.9 to Form 10-K for fiscal year 1992)

       10.8    California  Water Service  Company Pension Plan (Exhibit 10.10 to
               Form 10-K for fiscal year 1992)

       10.9    California Water Service Company Employees Savings Plan. (Exhibit
               10.12 to Form 10-K for fiscal year 1992)

       10.10   Agreement  between the City of  Hawthorne  and  California  Water
               Service Company for the 15-year lease of the City's water system.
               (Exhibit 10.17 to Form 10-Q dated March 31, 1996)

       10.11   Water Supply Agreement dated September 25, 1996, between the City
               of Bakersfield  and California  Water Service  Company.  (Exhibit
               10.18 to Form 10-Q dated September 30, 1996)

       10.12   Water Supply Contract dated November 16, 1994, between California
               Water Service  Company and Alameda County Flood Control and Water
               Conservation  District relating to Cal Water's Livermore District
               (Exhibit 10.15 to Form 10-K for 1994)

       10.13   Dividend  Reinvestment and Stock Purchase Plan dated February 17,
               1998 (Filed on Form S-3 dated February 17, 1998)

       10.14   California Water Service Group Directors Retirement Plan (Exhibit
               10.18 to Form 10-K for fiscal year 1997) *

                                       31


       10.15   $60,000,000  Business Loan Agreements  between Bank of America as
               lead  arranger/bank  and California  Water Service Group, and CWS
               Utility Services and California  Water Service  Company,  and JCC
               Homes dated August 1, 2001; terminated February 28, 2003 (Exhibit
               10.1 to Form 10-Q dated September 30, 2001)

       10.16   $10,000,000  Business Loan Agreement  between Bank of America and
               California  Water  Service Group and CWS Utility  Services  dated
               February 28, 2003 (Exhibit  10.17 to Form 10-K dated December 31,
               2002)

       10.17   $55,000,000  Business Loan Agreement  between Bank of America and
               California Water Service Company dated February 28, 2003 (Exhibit
               10.18 to Form 10-K dated December 31, 2002)

       10.18   Executive  Severance  Plan  (Exhibit  10.24  to Form  10K for the
               fiscal year 1998) *

       10.19   California Water Service Group Long-Term Incentive Plan (filed as
               Appendix A of the 2000 California Water Service Group Proxy) *

       10.20   California  Water  Service  Group  Deferred   Compensation   Plan
               effective   January  1,  2001;  this  plan  replaces  the  former
               Directors Deferred  Compensation Plan (Exhibit 10.22 to Form 10-K
               for 2000) *

       10.21   California   Water   Service   Company   Supplemental   Executive
               Retirement  Plan  (SERP)  effective  January 1,  2001;  this plan
               replaces a prior plan,  see Exhibit 10.9  (Exhibit  10.23 to Form
               10-K for 2000) *

       10.22   Amendment to the California  Water Service  Company  Supplemental
               Executive  Retirement  Plan  (SERP)  effective  January  1, 2003,
               granting  60%  retirement  benefit  after  15  years  of  service
               (Exhibit 10.23 to Form 10-K for dated December 31, 2002)*

       10.23   Amendment No. 1 effective  June 25, 2003, to agreement  with Bank
               of America dated  February 28, 2003  (Exhibit  10.24 to Form 10-Q
               dated June 30, 2003)

       10.24   Water Supply  Contract 99-73 between the City of Bakersfield  and
               California Water Service  Company,  dated March 31, 1999 (Exhibit
               10.25 to Form 10-Q dated September 30, 2003)

       10.25   Amendment  No. 1 to Water  Supply  Contract  between  the City of
               Bakersfield and California Water Service  Company,  dated October
               3, 2001 (Exhibit 10.26 to Form 10-Q dated September 30, 2003)

       10.26   Amendment No. 2 effective  February 18, 2004,  to agreement  with
               Bank of America dated February 28, 2003

                                       32


13.   Annual  Report  to  Security  Holders,  Form 10-Q or  Quarterly  Report to
      Security Holders:

       13.1    2003 Annual Report. Certain sections of the 2003 Annual Report to
               Stockholders  are  incorporated  by reference in this 10-K filing
               and filed with this Form 10-K as Exhibit 13. This includes  those
               sections referred to in Part I, Item 1, Business; Part I, Item 2,
               Properties;  Part II,  Item 5,  Market  for  Registrant's  Common
               Equity and Related Stockholder Matters; Part II, Item 6, Selected
               Financial  Data;  Part II, Item 7,  Management's  Discussion  and
               Analysis of Financial  Condition and Results of Operations;  Part
               II,  Item 7A,  Quantitative  and  Qualitative  Disclosures  About
               Market  Risk;  and  Part II,  Item 8,  Financial  Statements  and
               Supplementary Data.

21.   Subsidiaries of the Registrant

23.   Consents of Experts and Counsel

       23.1    Consent of KPMG LLP

31.   Certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

       31.1    Chief Executive  Officer  certification  of financial  statements
               pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

       31.2    Chief Financial  Officer  certification  of financial  statements
               pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

32.   Chief Executive Officer and Chief Financial Officer Certification pursuant
      to 18 U.S.C.  Section  1350,  as adopted  pursuant  to Section  906 of the
      Sarbanes-Oxley Act of 2002.

*     Management contract or compensatory plan or arrangement

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