UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    FORM 10-Q

(Mark One)

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

For the quarterly period ended September 30, 2002

                                            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 number 1-13883

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

         Delaware                                      77-0448994
- --------------------------------------------------------------------------------
(Sate or other jurisdiction                 (I.R.S. Employer identification No.)
of incorporation or organization)

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

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

                                 Not Applicable
- --------------------------------------------------------------------------------
              (Former name, former address and former fiscal year,
                          if changed since last report)

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 |_|

APPLICABLE  ONLY TO  ISSUERS  INVOLVED  IN  BANKRUPTCY  PROCEEDINGS  DURING  THE
PRECEDING FIVE YEARS Indicate by check mark whether the registrant has filed all
documents  and reports  required to be filed by Sections  12, 13 or 15(d) of the
Securities  Exchange Act of 1934  subsequent to the  distribution  of securities
under a plan confirmed by a court. Yes |_| No |_|

APPLICABLE ONLY TO CORPORATE ISSUERS

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date. Common shares outstanding as of
October 31, 2002 - 15,182,046.



PART I FINANCIAL INFORMATION

Item 1. Financial Statements

      The financial  information  presented in this 10Q filing has been prepared
by management and has not been audited.



CALIFORNIA WATER SERVICE GROUP
CONDENSED CONSOLIDATED BALANCE SHEET
(In thousands, except per share data)



                                                               September 30,            December 31,
                                                                   2002                     2001
                                                                ---------                ---------
                                                                                   
ASSETS
Utility plant:
       Utility plant                                            $ 973,917                $ 909,658
       Less accumulated depreciation and amortization             300,863                  285,316
                                                                ---------                ---------
            Net utility plant                                     673,054                  624,342
                                                                ---------                ---------

Current assets:
       Cash and cash equivalents                                    2,982                      953
       Receivables                                                 29,855                   22,800
       Unbilled revenue                                            10,887                    7,291
       Materials and supplies at average cost                       2,632                    2,147
       Taxes and other prepaid expenses                             8,831                    7,224
                                                                ---------                ---------
            Total current assets                                   55,187                   40,415
                                                                ---------                ---------

Other assets:
       Regulatory assets                                           39,598                   38,893
       Other assets                                                 8,171                    6,564
                                                                ---------                ---------
            Total other assets                                     47,769                   45,457
                                                                ---------                ---------
                                                                $ 776,010                $ 710,214
                                                                =========                =========

CAPITALIZATION AND LIABILITIES
Capitalization:
       Common stock, $.01 par value                             $     152                $     152
       Additional paid-in capital                                  49,983                   49,984
       Retained earnings                                          150,653                  147,299
       Accumulated other comprehensive loss                          (816)                    (816)
                                                                ---------                ---------
            Total common stockholders' equity                     199,972                  196,619
       Preferred stock                                              3,475                    3,475
       Long-term debt, less current maturities                    241,789                  202,600
                                                                ---------                ---------
            Total capitalization                                  445,236                  402,694
                                                                ---------                ---------

Current liabilities:
       Current maturities of long-term debt                         7,526                    5,381
       Short-term borrowings                                       11,000                   22,000
       Accounts payable                                            29,098                   24,032
       Accrued expenses and other liabilities                      39,851                   27,576
                                                                ---------                ---------
            Total current liabilities                              87,475                   78,989

Unamortized investment tax credits                                  2,882                    2,882
Deferred income taxes                                              31,075                   28,816
Regulatory and other liabilities                                   20,649                   20,680
Advances for construction                                         113,475                  106,657
Contributions in aid of construction                               75,218                   69,496
Commitments
                                                                ---------                ---------
                                                                $ 776,010                $ 710,214
                                                                =========                =========


See Notes to Condensed Consolidated Financial Statements



CALIFORNIA WATER SERVICE GROUP
CONDENSED CONSOLIDATED STATEMENT OF INCOME
(In thousands, except per share data)

For the three months ended:                             Sept. 30,      Sept. 30,
                                                          2002           2001
                                                        --------       --------

Operating revenue                                        $81,440        $76,310
                                                        --------       --------
Operating expenses:
      Operations                                          54,271         52,924
      Maintenance                                          3,010          2,832
      Depreciation and amortization                        5,263          4,732
      Income taxes                                         5,047          3,915
      Property and other taxes                             2,334          2,390
                                                        --------       --------
          Total operating expenses                        69,925         66,793
                                                        --------       --------

          Net operating income                            11,515          9,517

Other income and expenses, net                               596            420
                                                        --------       --------

          Income before interest expense                  12,111          9,937
                                                        --------       --------

Interest expense:
      Long-term debt interest                              4,149          3,525
      Other interest                                         287            492
                                                        --------       --------
          Total interest expense                           4,436          4,017
                                                        --------       --------

Net income                                               $ 7,675        $ 5,920
                                                        ========       ========

Earnings per share
      Basic                                              $  0.50        $  0.39
                                                        ========       ========
      Diluted                                            $  0.50        $  0.39
                                                        ========       ========
Weighted average shares outstanding
      Basic                                               15,182         15,182
                                                        ========       ========
      Diluted                                             15,185         15,186
                                                        ========       ========
Dividends per share of common stock                     $0.28000       $0.27875
                                                        ========       ========

See Notes to Condensed Consolidated Financial Statements



CALIFORNIA WATER SERVICE GROUP
CONDENSED CONSOLIDATED STATEMENT OF INCOME
(In thousands, except per share data)

For the nine months ended:                               Sept. 30,     Sept. 30,
                                                           2002          2001
                                                         --------      --------

Operating revenue                                        $202,234      $190,276
                                                         --------      --------
Operating expenses:
      Operations                                          134,481       130,776
      Maintenance                                           8,365         8,678
      Depreciation and amortization                        16,045        14,325
      Income taxes                                         10,898         7,846
      Property and other taxes                              7,349         7,291
                                                         --------      --------
          Total operating expenses                        177,138       168,916
                                                         --------      --------

          Net operating income                             25,096        21,360

Other income and expenses
      Other income, net                                     1,676         1,351
      Gain on the sale of non-utility property              1,961         1,271
                                                         --------      --------
                                                            3,637         2,622
                                                         --------      --------

          Income before interest expense                   28,733        23,982
                                                         --------      --------

Interest expense:
      Long-term debt interest                              11,518        10,551
      Other interest                                          994         1,526
                                                         --------      --------
          Total interest expense                           12,512        12,077
                                                         --------      --------

Net income                                               $ 16,221      $ 11,905
                                                         ========      ========

Earnings per share
      Basic                                              $   1.06      $   0.78
                                                         ========      ========
      Diluted                                            $   1.06      $   0.77
                                                         ========      ========
Weighted average shares outstanding
      Basic                                                15,182        15,182
                                                         ========      ========
      Diluted                                              15,185        15,186
                                                         ========      ========
Dividends per share of common stock                      $0.84000      $0.83625
                                                         ========      ========

See Notes to Condensed Consolidated Financial Statements



CALIFORNIA WATER SERVICE GROUP
CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS
(In thousands)



For the nine months ended:                                    Sept. 30,    Sept. 30,
                                                                2002         2001
                                                              --------     --------
                                                                     
Operating activities
     Net income                                               $ 16,221     $ 11,905
                                                              --------     --------
     Adjustments to reconcile net income to net cash
       provided by operating activities:
         Depreciation and amortization                          16,045       14,325
         Deferred income taxes, investment tax credits
             regulatory assets and liabilities, net              1,523        3,168
         Gain on sale of non-utility assets                     (1,961)      (1,271)
         Changes in operating assets and liabilities:
             Receivables                                        (6,866)      (4,846)
             Unbilled revenue                                   (3,596)      (3,169)
             Taxes and other prepaid expenses                   (1,605)      (1,678)
             Accounts payable                                    4,945        5,001
             Other current assets and liabilities               11,790        8,688
             Other changes, net                                 (3,386)      (1,199)
                                                              --------     --------
                 Net adjustments                                16,889       19,019
                                                              --------     --------
                 Net cash provided by operating activities      33,110       30,924
                                                              --------     --------
Investing activities:
     Utility plant expenditures                                (58,915)     (39,263)
     Acquisition of Rio Grande Utility Corporation              (2,300)          --
     Proceeds from sale of non-utility assets                    2,122        1,055
                                                              --------     --------
                 Net cash used by investing activities         (59,093)     (38,208)
                                                              --------     --------

Financing activities:
     Net short-term borrowings                                 (11,000)      (8,598)
     Proceeds from long-term debt                               40,000       20,000
     Advances for construction                                   9,924        4,295
     Refunds of advances for construction                       (3,386)      (3,116)
     Contributions in aid of construction                        5,342        5,286
     Dividends paid                                            (12,868)     (12,801)
                                                              --------     --------
                 Net cash provided by financing
                    activities                                  28,012        5,066
                                                              --------     --------

Change in cash and cash equivalents                              2,029       (2,218)
Cash and cash equivalents at beginning of period                   953        3,241
                                                              --------     --------
Cash and cash equivalents at end of period                       2,982        1,023
                                                              ========     ========


See Notes to Condensed Consolidated Financial Statements



                         CALIFORNIA WATER SERVICE GROUP
              Notes to Condensed Consolidated Financial Statements
                               September 30, 2002

Note 1. Significant Accounting Policies

      A summary of  significant  accounting  policies and  detailed  information
      regarding the Company's financial  statements is included in the Company's
      Annual Report on Form 10-K for the year ended December 31, 2001.

Note 2. Seasonal Business

      Due to the seasonal nature of the water business,  the results for interim
      periods  are not  indicative  of the results  for a  twelve-month  period.
      Revenue and income are  generally  higher in the warm,  dry summer  months
      when water  usage and sales are  greater.  Revenue and income are lower in
      the winter  months when cooler  temperatures  and rainfall  curtail  water
      usage and sales.

Note 3. Interim Financial Statements

      The  interim  financial  information  is  unaudited.  In  the  opinion  of
      management,  the accompanying financial statements reflect all adjustments
      that are  necessary  to provide a fair  statement  of the  results for the
      periods  covered.   The  adjustments  consist  only  of  normal  recurring
      adjustments.

Note 4. Earnings Per Share

      Basic  earnings per share is calculated by dividing  income  available for
      common  stockholders  by the  weighted  average  number of  common  shares
      outstanding during the period. Diluted earnings per share is calculated by
      dividing income available for common  stockholders by the weighted average
      number of common shares outstanding  including potentially dilutive shares
      as  determined  by  application  of  the  treasury  stock  method.  Income
      available for common  stockholders is determined by subtracting  dividends
      paid on  preferred  stock,  which  were  $38,000  for the  quarters  ended
      September  30, 2002 and 2001,  from net income.  For the nine months ended
      September  30,  2002 and 2001,  preferred  dividends  were  $115,000.  The
      difference  between basic and diluted  weighted  average  number of common
      shares  outstanding  is  the  effect  of  dilutive  common  stock  options
      outstanding.

            On January 2, 2002,  55,000 new options  were granted at an exercise
      price of $25.15 under the Company's Long Term  Incentive  Plan. A total of
      154,500  options were  outstanding  at September 30, 2002. No options were
      exercised during the first nine months of 2002 or during the year 2001.

            Common stock  options to purchase  107,000  shares and 52,000 shares
      for the quarters  ended  September 30, 2002 and 2001,  respectively,  were
      excluded from the diluted per share calculation due to their anti-dilutive
      effect.  For the nine months  ended  September  30, 2002 and 2001,  common
      stock  options  to  purchase  107,000



      shares and 52,000 shares in the respective  periods were excluded from the
      dilutive per share calculation due to their anti-dilutive effect.

      Shares used in the basic and dilutive earnings per share  calculations for
      the three and nine months ending September 30, 2002 and 2001 were:

                                                                 In Thousands
                                                               -----------------
                                                                2002       2001
                                                               ------     ------
      Shares used to calculate basic earnings per share        15,182     15,182
      Dilutive common stock options outstanding                     3          4
                                                               ------     ------
      Shares used to calculate dilutive earnings per share     15,185     15,186
                                                               ------     ------

Note 5. Lines of Business

      The Company  operates  primarily in one business  segment  providing water
      utility services.

Note 6. New Accounting Standards

      During 2002,  the Company  adopted two new  accounting  policies,  each of
      which was based on new  requirements  issued by the  Financial  Accounting
      Standards Board ("FASB").

            In July 2001, the FASB issued Statement No. 142, "Goodwill and Other
      Intangible  Assets".  Statement 142 specifies that goodwill and intangible
      assets  with  indefinite  useful  lives will no longer be  amortized,  but
      instead be tested for impairment at least annually in accordance  with the
      provisions of the statement.  Statement 142 also requires that  intangible
      assets with determinable useful lives be amortized over their useful lives
      to their  estimated  residual  values,  and reviewed for  impairment.  The
      Company  adopted  Statement  No. 142 on January 1, 2002.  The  adoption of
      Statement No. 142 did not have a material impact on the financial position
      or results of operation.

            In August 2001, Statement No. 144, "Accounting for the Impairment or
      Disposal of Long-Lived Assets," was issued by the FASB. The statement sets
      forth requirements for measuring  impairment of a long-lived asset that is
      defined  as the  condition  that  exists  when the  carrying  amount  of a
      long-lived  asset exceeds its fair value.  The statement also  establishes
      criteria  in which an  impairment  loss must be  recognized.  The  Company
      adopted  Statement No. 144 on January 1, 2002. Its adoption did not have a
      material impact on the financial position or results of operation.

Note 7.  Issuance of Long-term Debt

      In August 2002,  the Company  completed  the issue of $20 million,  5.90%,
      15-year Series F Senior Notes. This was the second $20 million senior note
      issue completed by the Company in 2002. In May 2002, Series E senior notes
      were  issued  at 7.11%  with a 30-year  term.  The  notes  were  issued to
      institutional  investors  under an exemption from  registration in Section
      4(2) of the Securities Act of 1933.



Note 8. Acquisitions

      Rio Grande Utility Corporation.

            On July 1, 2002,  after receiving  state  regulatory  approval,  the
      Company  acquired certain assets of Rio Grande Utility  Corporation  ("Rio
      Grande")  through its  wholly-owned  subsidiary,  New Mexico Water Service
      Company  ("NMWSC").  The purchase includes the water and wastewater assets
      of Rio Grande,  which  serves  2,265 water and 1,600  sewer  customers  in
      unincorporated  areas of Valencia  County,  New  Mexico,  located 30 miles
      south of  Albuquerque.  The purchase  price was  $2,300,000 in cash,  plus
      assumption of $3,100,000 in outstanding  debt. Rate base for the system is
      approximately  $5,400,000.  Its total assets were  $8,400,000  at June 30,
      2002 of which  $7,312,000 was for utility plant and $732,000 was for water
      rights.  A condensed  balance  sheet of Rio Grande has not been  presented
      since the acquisition is not material to the Company.

            The Rio Grande purchase price was allocated to the fair value of net
      assets  acquired,  including  utility  plant,  water  rights  and  assumed
      liabilities.  The  results  of  operations  for the three  and nine  month
      periods  ending  September 30, 2002 include the  operating  results of Rio
      Grande from the date of acquisition.

            Pro forma results of operations  have not been presented for the Rio
      Grande  acquisition  because the effect of this  purchase is not material.
      The preliminary allocation of fair value is based on management's estimate
      of the  fair  value  for  purchase  accounting  purposes  at the  date  of
      acquisition.  The purchase  price  allocations  are subject to revision as
      management obtains additional information.

            For 2001,  Rio Grande had gross  revenue  of  $1,485,000.  Its gross
      utility  plant in service at  December  31, 2001 was  $12,458,000  and net
      utility  plant  in  service  was  $9,153,000.   The  regulatory   decision
      authorizing  the  purchase  of Rio  Grande's  assets by NMWSC  included an
      authorization to increase annual water rates by $115,000.

            Kaanapali Water Corporation

      In  August  2002,  the  Company  agreed to  acquire  the  Kaanapali  Water
      Corporation  ("KWC") for $7.7 million in cash.  KWC provides water utility
      services to 500  customers in Maui,  Hawaii.  It had 2001 revenues of $3.3
      million,  and has net plant of  approximately  $7.3  million  and  current
      assets of $0.4  million.  The  acquisition  is subject to  approval of the
      Hawaii Public Utilities Commission ("HPUC") which is expected in the first
      quarter of 2003. An  application  requesting  approval of the purchase has
      been submitted to the HPUC.

            National Utilities Corporation

      In June 2002,  NMWSC signed an agreement  to purchase  National  Utilities
      Corporation for approximately  $700,000.  National  Utilities serves 1,600
      water  customers  and had 2001  revenue of  $575,000  and total  assets of
      $1,425,000.  Its net  utility  plant in service at  December  31, 2001 was
      $1,143,000.  The  purchase  is subject to the  approval  of the New Mexico
      Public  Regulation  Commission  which is expected in the first  quarter of
      2003.



Item 2

MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

FORWARD LOOKING STATEMENTS

      This Form 10-Q  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,  anticipates,
projects 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.  Actual results may vary materially from what
is contained in a  forward-looking  statement.  Factors which may cause a result
different  than expected or  anticipated  include:  governmental  and regulatory
commissions'   decisions,   changes  in  regulatory   commissions'  policies  or
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   requirements,
acquisitions,  the ability to successfully  implement business plans, changes in
customer  water use  patterns  and the impact of weather on  operating  results,
especially  as it impacts  water sales.  The Company  assumes no  obligation  to
provide public updates of forward-looking statements.

CRITICAL ACCOUNTING POLICIES

      The Company maintains its accounting records in accordance with accounting
principles generally accepted in the United States of America and as directed by
the  regulatory  commissions  to which the  Company's  operations  are  subject.
Management believes that the following  accounting policies may involve a higher
degree of  complexity  and  judgement  and the use of  different  judgements  or
different  assumptions on which judgements are based can cause a material change
in the Company's results of operations and financial condition.

Revenue  Recognition.  Revenue  from  metered  customers  includes  billings  to
customers  based on  monthly  meter  readings  plus an  estimate  for water used
between the customer's last meter reading and the end of the accounting  period.
The unbilled  revenue amount is recorded as a current asset on the balance sheet
under the caption  "Unbilled  Revenue."  At  September  30,  2002,  the unbilled
revenue  amount was $10.9  million and at December  31, 2001 the amount was $7.3
million.  The  unbilled  revenue  amount is generally  higher



during the summer  months when water sales are  higher.  The amount  recorded as
unbilled  revenue varies depending on water usage in the preceding  period,  the
number of days  between  meter reads for each billing  cycle,  and the number of
days between each cycle's meter reading and the end of the accounting cycle.

      Flat rate  customers are billed in advance at the beginning of the service
period. The revenue is prorated so that the portion of revenue applicable to the
current  accounting  period is included in that  period's  revenue.  The portion
related to a subsequent accounting period is recorded as unearned revenue on the
balance sheet and recognized as revenue when earned in the subsequent accounting
period.  The unearned  revenue  liability was $1.7 million at September 30, 2002
and  December  31,  2001.  It  is  included  in  "accrued   expenses  and  other
liabilities" on the balance sheet.

Expense  Balancing and  Memorandum  Accounts.  Expense  balancing and memorandum
accounts reflect rate increases charged to the Company by suppliers of purchased
water and  purchased  power,  and pump tax  increases  that are not  included in
customer  water  rates.  The  Company  does  not  record  expense  balancing  or
memorandum  accounts on its books as revenue,  nor record a receivable until the
California  Public  Utilities  Commission  ("CPUC")  has  authorized a change in
customer rates to collect the cost increases and customers have been billed. The
cost increases tracked in expense balancing and memorandum accounts are referred
to as  "Offsetable  Expenses"  because  under  certain  circumstances  they  are
recoverable  from  customers  in future  rate  increases  designed to offset the
higher costs.

      In October 2001,  the CPUC adopted a resolution  implementing  its staff's
interim  recommendation  concerning  practices  and  policies  that enable water
utilities to recover cost increases in purchased water, purchased power and pump
taxes costs.  These are costs that are passed on to water utilities by suppliers
and are beyond the control of the utility. The interim  recommendation  requires
that future Company  requests to recover  offsetable  expenses will be processed
only if an operating district has filed a General Rate Case ("GRC")  application
within a  three-year  period  and the  district  is not  earning  more  than its
authorized  rate of return on a  forward-looking,  pro-forma  basis.  Neither of
these  requirements  applied to offset rate  increases  prior to adoption of the
resolution.  The CPUC also  directed its staff to open a proceeding  to evaluate
offsetable  expense  recovery  practices and policies,  and recommend  permanent
revisions.

      Historically,  offset rate increases enabled water utilities to recover as
a  pass-through,  cost increases for offsetable  expenses that were not known or
anticipated  when customer rates were  established and were beyond the utility's
control.  Offsetable  expenses  incurred  prior to the  CPUC's  adoption  of the
staff's  interim  recommendation  were  frozen as of  November  29,  2001 in the
balancing  accounts.  The Company is  authorized  to track  offsetable  expenses
incurred after the CPUC changed its policy in regulatory memorandum accounts for
potential  recovery  subject to the CPUC's future  determination  of appropriate
practices  and  policies.  Although  the  Company  is  hopeful  that  it will be
authorized  to  recover  the  offsetable  expenses  in both  the  balancing  and
memorandum  accounts,  it is  unable  to  predict  the  timing or amount of such
recoveries.  Therefore,  because of the uncertainty of collection, the Company's
accounting policy is to



not record the expense balancing and memorandum account amounts in its financial
statements until such amounts are included in customer billings.

      In September 2002, the assigned  administrative law judge recommended that
the CPUC adopt as permanent  the interim  recommendation  regarding  recovery of
expense  balancing and memorandum  accounts as described  above,  but modify the
limit on the amount  subject to  recovery.  Under the interim  rules,  a utility
would not be allowed to  recover  any of the  balancing  or  memorandum  account
balance if it were earning over its  authorized  return on equity.  The proposed
modification  would allow  recovery of a portion of the  balancing or memorandum
account up to the amount by which the Company's  over earning of its  authorized
rate of return did not exceed the  amount in the  balancing  account.  While the
staff's  recommendation  is an improvement  over the interim rules  currently in
place,  the Company believes there should be no limit on allowed recovery of the
balancing  and  memorandum  accounts.  The Company is  continuing to present its
arguments  to the CPUC  staff.  The CPUC is expected  to adopt  permanent  rules
regarding recovery of balancing and memorandum accounts during the first half of
2003.  The Company is unable to predict  what the final  rules will  comprise or
their financial impact.

      At December 31, 2001, the amount  included in the balancing and memorandum
accounts was $6.5 million.  At September  30, 2002,  the amount had increased to
$10.5 million. The amount relates primarily to higher electric costs incurred by
the  Company  since 2001 when power  rates  charged to the  Company by  electric
suppliers,  as authorized by the CPUC, increased an average of 48%. Increases in
the memorandum  accounts are expected to be smaller once current power rates are
reflected in customer rates through future GRC decisions.

Utility  Accounting.  Because the Company  operates  extensively  in a regulated
business,  it is subject to the provisions of Statement of Financial  Accounting
Standards  ("SFAS")  No. 71,  "Accounting  for the  Effects of Certain  Types of
Regulation." Regulators establish rates that are expected to permit the recovery
of the cost of service and a return on investment. In the event a portion of the
Company's  operations  were no longer  subject to the provisions of SFAS No. 71,
the  Company  would be  required  to write off  related  regulatory  assets  and
liabilities that are not specifically  recoverable and determine if other assets
might be impaired.  If a regulatory  commission determined that a portion of the
Company's  assets were not recoverable in customer  rates,  the Company would be
required to determine if it had suffered an asset  impairment that would require
a write down in the assets'  valuation.  There had been no asset  impairment  at
September 30, 2002.

Income Taxes.  Significant judgment by management is required in determining the
provision for income taxes. The preparation of consolidated financial statements
requires  the  estimation  of income  tax  expense.  The  process  involves  the
estimating of current tax exposure together with assessing temporary differences
resulting from different  treatment of certain items, such as depreciation,  for
tax and financial statement reporting.  These differences result in deferred tax
assets and liabilities,  which are reported in the  consolidated  balance sheet.
The Company must also assess the likelihood that deferred



tax  assets  will be  recovered  in future  taxable  income,  and to the  extent
recovery is unlikely,  a valuation  allowance would be recorded.  If a valuation
allowance were required, it could significantly  increase income tax expense. In
management's view, a valuation allowance is not required at September 30, 2002.

RESULTS OF THIRD QUARTER 2002 OPERATIONS

      Third  quarter net income was  $7,675,000,  equivalent to $0.50 per common
share on a diluted basis compared to the $5,920,000 or $0.39 per share earned in
2001's third quarter.

Revenue

      Operating  revenue  increased  $5,130,000 or 7% to  $81,440,000.  Weather,
which can have a significant  influence on customer water usage was dry and warm
in both years.  A 4% increase in water  production  was  reflected  in increased
water used by existing  customers and sales to new  customers.  The factors that
impacted the operating revenue increase for the third quarter 2002 are presented
in the following table:

      Increased usage by existing customers       $1,763,000
      Rate increases                               2,244,000
      Usage by new customers                       1,123,000
                                                  ----------
         Net revenue increase                     $5,130,000
                                                  ==========

      Revenue  from rate  increases  includes  $623,000  for  recovery of higher
purchased power costs in four of the Company's 24 California districts. Recovery
of power cost  increases in the other  districts has not been  authorized by the
CPUC,  but will be  processed  in  accordance  with  the  CPUC's  procedures  as
described in the Critical  Accounting  Policies section of this report.  Because
the CPUC has not issued  decisions for the GRC  applications  that were filed in
July 2001, customer water rates continue to reflect electric power costs that do
not include the 48% electric rate  increases  that went into effect during 2001.
Additional revenue from rate cases also includes $1,040,000  authorized in prior
year GRC decisions and $581,000 from step rate increases  effective at the start
of 2002.

Total Operating Expenses

      Total  operating  expenses  were  $69,925,000  for the three  months ended
September  30,  2002  versus  $66,793,000  for the same  period  in  2001,  a 5%
increase.

      Water production expense consists of purchased water,  purchased power and
pump taxes.  It represents the largest  component of total  operating  expenses.
During the quarter,  these costs accounted for 51% of total  operating  expenses
and increased 2% compared to total operating expenses for the third quarter last
year. Well production  provided 54% of the water supply,  46% was purchased from
wholesale  suppliers and a small  quantity was  developed  through the Company's
surface water treatment plants. The components of water production costs and the
changes from last year are shown in the table below:



                              Third Quarter
                                2002 Cost      Change
                               -----------   ----------
      Purchased water          $25,163,000   $1,571,000
      Purchased power            8,454,000     (647,000)
      Pump taxes                 2,257,000      (87,000)
                               -----------   ----------
         Total                 $35,874,000     $837,000
                               ===========   ==========

      A 1%  increase  in the volume of water  purchased  for  resale  along with
purchased  water rate increases from  wholesale  suppliers' in three  California
districts caused purchased water cost to increase.  This was partially offset by
a wholesale water supplier in one district  reducing rates and the  cancellation
of a planned 9% mid-year  increase  in the  wholesale  supplier's  rates for the
three San Francisco Peninsula districts.

      Purchased  power,  which is used  mainly  to  operate  pumping  equipment,
decreased 7% due to lower well production.  Where available, the Company shifted
to lower cost electric  tariffs offered by the power companies which resulted in
lower purchased power costs.

       Labor  rate  increases  that  averaged  3% on  January 1, 2002 along with
payroll for  employees  added in the  acquisition  of the  Company's  New Mexico
subsidiary  caused  payroll  costs to increase  $358,000.  At September 30, 2002
there were 799  employees  and at September  30, 2001 there were 796  employees.
Consultants  were used to enhance computer  technology  systems during the third
quarter  of 2001.  That  cost has  since  been  eliminated,  helping  to  reduce
operations expenses.

      Maintenance expense was $177,000 higher in the quarter ended September 30,
2002 due to  additional  maintenance  required  at wells  and for  service  line
repairs.  The  increase in well and service line repairs was offset by a decline
in water main repairs.  Scheduled maintenance for the full year 2002 is expected
to be in a range similar to the prior year.

      Depreciation  expense increased $531,000 because of a larger investment in
depreciable  utility plant and an increase in the recovery of plant  investments
recognized in prior GRC proceedings.

      Federal and state  income  taxes  increased  $1,133,000  because of higher
income. The effective tax rate was 40% in both years.

Other Income

      Other income and expenses was $596,000  compared to $420,000 in 2001.  The
increase in other income  resulted from  improved  results from job orders (work
done for others) and an increase in antenna site  leases.  There were no surplus
real property sales recorded in the third quarter of 2002 or 2001.

Interest Expense

      Total interest expense increased $418,000. Long-term debt interest expense
increased $624,000 because of two additional $20 million senior note issues that
were outstanding in 2002.  Because of the increase in construction  expenditures
especially on



several large,  lengthy  projects such as the Bakersfield  treatment  plant, the
amount of interest capitalized during the quarter increased by $150,000.

      Borrowings under the Company's short-term bank credit agreement were lower
during  the third  quarter  this year than in 2001.  Average  interest  rates on
short-term  debt was  approximately  3% in 2002 compared to a 4% rate during the
third quarter in 2001. These two factors caused  short-term  interest expense to
decline $206,000.

RESULTS OF NINE MONTHS ENDED SEPTEMBER 30, 2002

      Net  income  for the nine  months  ending  September  30,  2002  increased
$4,316,000  to  $16,221,000,  equivalent  to $1.06 per common share on a diluted
basis compared to $0.77 on a diluted basis for the same period last year.

Revenue

      Operating  revenue  increased  $11,958,000  to  $202,234,000.  The  higher
revenue was due to increased  usage by existing  customers,  rate  increases and
revenue from 7,900 new customers  added during the period.  The average  revenue
per customer increased 5% for the nine-month period. A breakdown of the increase
in operating revenue is presented in the following table:

      Increased usage by existing customers       $4,031,000
      Rate increases                               5,936,000
      Usage by new customers                       1,991,000
                                                 -----------
           Net revenue increase                  $11,958,000
                                                 ===========

      The rate increases came from  California GRC decisions that were effective
in September 2001 totaling  $2,103,000 and a GRC decision in Washington that was
effective in May 2002 totaling  $520,000,  step rate increases  effective at the
start of the year totaling  $1,448,000  and power cost offset rate  increases of
$1,865,000 that are effective for four districts beginning in November 2001.

Total Operating Expenses

      Total operating expenses increased 5% over 2001.

      Water production volume and the cost of water production increased 5% each
from last year. The water  production costs accounted for 46% of total operating
expenses.  Well  production  provided 52% of the supply with 47% purchased  from
wholesale  suppliers and 1% produced through the Company's treatment plants, the
same ratios as last year.

      Wholesale water rate increases from three wholesale suppliers were modest.
One supplier  reduced its cost of  wholesale  water.  As a result,  average 2002
purchased water rates are about the same as last year. The increase in purchased
water  cost was  mainly due to the  increase  in the  volume of water  purchased
because of higher  customer usage and to serve new  customers.  Because of power
rate increases that became effective in 2001,  purchased power expense increased
over 8%. For January, electric rates were 48%



more than last year,  from February  through  mid-May the rates were 38% higher,
and for the remainder of the period to September 30, 2002, the rates were at the
same  level as in 2001.  The  Company  is not  aware of any  future  power  rate
increases.  The Company has taken  advantage of lower electric rate tariffs that
are  available  from its two  electric  suppliers  and by doing so  lowered  the
overall cost of electric power. The components of water  production  expense and
the changes from last year are shown in the table below:

                          2002 Cost         Change
                         -----------      ----------
      Purchased water    $59,115,000      $2,374,000
      Purchased power     17,395,000       1,275,000
      Pump taxes           5,054,000          59,000
                         -----------      ----------
            Total        $81,564,000      $3,708,000
                         ===========      ==========

      In addition to water production costs, other operations expense categories
increased $4,495,000. Payroll and benefits charged to operations were 1% less in
2002 because there were fewer employees on the payroll. As part of the Company's
expense  control  and  budget  process,  consultants  who  worked on  technology
projects were curtailed, reducing these expenses.

      Maintenance  expenses  were  lower by  $313,000  due to fewer  repairs  of
pumping equipment, wells, water mains and service lines.

      Depreciation and amortization expense increased $1,721,000 due to a larger
depreciable plant investment on which depreciation  expense is calculated and an
increase in recovery of plant investments authorized in prior GRC proceedings.

      Federal and state  income  taxes  increased  $3,052,000  because of higher
taxable income. The effective tax rate in both years was 40%.

Other Income

      The increase in other income from $2,622,000 to $3,637,000 was primarily a
result of additional surplus property sales in 2002. During 2002, property sales
totaled  $1,961,000  while in 2001  property  sales were  $1,271,000.  Net other
income  excluding  property  sales was  $1,676,000 in 2002 and $1,351,000 in the
prior  year.  This  increase  was mainly due to improved  operating  results for
operation and maintenance agreements and lease income at antenna sites.

Interest Expense

      Overall  interest  expense  reflects a $435,000  increase over 2001. Gross
long-term  interest  expense  increased  $1,567,000  because two  additional $20
million senior note issues were outstanding in 2002.  Series E notes were issued
in May and Series F notes were issued in August 2002. Because of the increase in
construction  expenditures especially on several large, lengthy projects such as
the Bakersfield  treatment plant, the amount of interest capitalized during 2002
increased by $600,000, reducing interest expense.



      Interest expense for short-term borrowings under the Company's bank credit
agreement  is  $532,000  less than in 2001 due to reduced  borrowings  and lower
interest rates.

REGULATORY MATTERS

Rate Case Proceedings

      The CPUC is processing the Company's 15 GRC  applications  that were filed
in July 2001. In May 2002,  evidentiary  hearings were completed for issues that
had not been resolved  between the Company and the CPUC's staff.  A decision for
the  applications  that had  been  expected  late in the  third  quarter  is now
anticipated  for late in the  fourth  quarter  due to a  variety  of  regulatory
processing  delays.  Because the Company and other  utilities  have  experienced
delays in receiving decisions,  it is possible that a decision could be rendered
later  than  anticipated.  Based on the  outcome  of  evidentiary  hearings  and
meetings with the CPUC staff, the Company estimates that the decisions could add
between  $13 million and $14  million in annual  revenue  commencing  with 2003.
While that is good news, it does not recognize that due to the regulatory lag in
receiving  the  decision,  approximately  $3 million in  revenue  was lost.  The
decision if approved as proposed is expected to  authorize a return on equity of
9.7% with an equity percentage of capitalization at 51.5%.

      Washington   Water  Service  Company  filed  a  General  Rate  Case  (GRC)
application  in February  2002.  The  Washington  Utilities  and  Transportation
Commission  issued  its  decision  early in April  2002  granting  a $1  million
increase in annual revenue.

      In June 2002,  the CPUC  authorized  the Company to increase  rates in its
Bakersfield  district by $796,000 on an annual basis. This decision was based on
an advice letter filing to cover  approximately $6 million of construction  cost
incurred to date for a new water treatment plant.

      The Company  filed a Notice of Intent to file GRC  applications  for three
California  districts plus General Office in July 2002. The  Commission's  staff
has not yet accepted the  applications,  but are expected to in early  November.
Four  additional  district GRC  applications  will be submitted in January 2003.
Combined,  these  districts  represent  17% of  the  California  customers.  The
Commission's  staff has  indicated  that a decision on these  filings  should be
expected in mid to late 2003.

Legislative Initiative.

      Regulatory   delays  in  obtaining  GRC  decisions  have  been  costly  to
California  regulated  water  utilities.   In  recent  years,  the  Company  has
experienced  significant  revenue losses due to regulatory  delays.  The Company
normally  files its general rate case  applications  in July.  The CPUC's stated
rate processing  plan provides for a decision within ten months.  When decisions
are not  issued in a timely  manner,  the  Company  loses  revenue  and does not
recover costs during the period the decisions are delayed.

      On September 30, 2002,  Assembly Bill 2838, that will be effective January
1, 2003,  was  enacted.  It is designed to preserve  the cash flow of  regulated
water  utilities by  providing  interim rate relief if the CPUC has not issued a
decision for a requested GRC



rate increase within its established ten month  processing  period.  The interim
rate relief is subject to adjustment  based on the CPUC's final  decision in the
GRC proceeding.

LIQUIDITY

Short-term and Long-term Debt

      Short-term  bank  borrowings  were  $11,000,000  at September 30, 2002 and
$22,000,000  at December  31,  2001.  On  September  23,  2002,  the bank credit
agreement was amended to extend the 30-day out-of-debt  compliance period from a
30-day period in calendar year 2002 to a 30-day period  between  January 1, 2002
and April 30, 2003. The extension provides the Company additional flexibility in
complying with the out-of-debt provision.

      In August 2002, the Company completed the issue of the $20 million, 5.90%,
15-year Series F Senior Notes.  This was the second series of $20 million senior
notes  issued  in 2002.  The  Series F notes  were  issued  to an  institutional
investor under an exemption from  registration in Section 4(2) of the Securities
Act of 1933.

Proceeds  from  the  issue  were  used  to  repay  outstanding  short-term  bank
borrowings.

      The  Company  has  initiated  a program  to  refinance  a  portion  of its
outstanding  first mortgage bonds. The refinancing is intended to take advantage
of the current low interest rates. The Company estimates that the total program,
which will be completed in two phases,  will save  approximately $1.4 million in
annual interest costs.

      In the first phase,  the Company expects to refinance  Series S, BB and DD
first mortgage bonds, and Series P which matures on November 1, 2002.  Including
Series P, the total first  mortgage bond  principal  balance  refinanced for the
four  series,  which will be after  application  of the November 1, 2002 sinking
fund payments,  will be $33,940,000.  The refinancing will be accomplished  with
funds from the issue of two new series of lower interest cost,  unsecured senior
notes.  This first phase of the  refinancing is expected to be completed  during
November and December,  and is expected to reduce annual interest costs about $1
million.
            The second phase of the  refinancing  is expected to be completed in
May 2003.  In this  phase,  the  Company  expects to  refinance  Series EE first
mortgage bonds with lower interest cost senior notes.
 There is currently outstanding $19,200,000 under this bond series.
 This phase of the refinancing is expected to save approximately
$450,000  in annual  interest  costs if interest  rates  remain at or near their
current levels.
      At September  30, 2002,  the Company has  $120,865,000  of first  mortgage
bonds  outstanding.  If it  successfully  completes  both  phases  of  the  bond
refinancing  program the Company will have $65,600,000 million in first mortgage
bonds outstanding.  Two other series of outstanding first mortgage bonds will be
considered  for  refinancing  late  in  2003.  Additional  refinancing  will  be
dependent upon market conditions at the time.

Debt Credit Ratings

      California  Water Service  Company is rated by Moody's  Investors  Service
("Moodys") and Standard & Poor's ("S&P").  The Company has enjoyed an Aa3 rating



by Moody's and AA- by S&P. At the end of the third quarter 2002, the Company met
separately with both credit rating agencies at annual rating reviews.

      On October 3, 2002,  Moody's  issued a news  release  stating  that it was
placing the  Company's  Aa3 senior  secured  debt rating on review for  possible
downgrade.  Moody's indicated that the primary reason for the action was delayed
rate relief from the California  Public  Utilities  Commission and the Company's
capital  spending   requirements  for  water  infrastructure  and  environmental
compliance needs.

      On November 6, 2002,  S&P lowered the  Company's  corporate  credit rating
from AA- to A+. In its news release, S&P stated that the change "has been caused
principally by  deterioration in regulatory  support from the California  Public
Utilities  Commission  (CPUC)," noting that decisions for recovery of reasonable
expenses  have been  delayed  as much as 18  months.  In the news  release,  S&P
classified the Company's  outlook as "stable,"  saying,  "Standard & Poor's does
not expect  that Cal Water will  experience  any  funding  anxiety  beyond  that
associated with regulatory tardiness."

Dividends

      The third quarter common dividend was paid on August 19, 2002 at $0.28 per
share  compared  to a  quarterly  dividend  in 2001 of  $0.27875.  This  was the
Company's 231st consecutive  quarterly dividend.  Annualized,  the 2002 dividend
rate is $1.12 per common share compared to $1.115 in 2001. Based on the 12-month
earnings per share at September 30, 2002, the dividend  payout ratio is 89%. For
the full year  2001,  the  payout  ratio was 115%.  On a  long-term  basis,  the
Company's goal is to achieve a dividend payout ratio of about 60%.

      At their October 23, 2002 meeting,  the Board  declared the fourth quarter
dividend  payable  November  18, 2002 to  stockholders  of record on November 4,
2002. This will be the 232nd consecutive quarterly dividend paid by the Company.

      About  10% of  the  outstanding  shares  participate  in the  reinvestment
program  under the  Company's  Dividend  Reinvestment  and Stock  Purchase  Plan
("Plan").  No new common  shares were issued  under the Plan during the quarter.
Shares required for the dividend  reinvestment  and stock purchase option of the
Plan were  purchased on the open market.  Shares are also  purchased on the open
market to fulfill the  requirements of the Company  sponsored  Employee  Savings
Plan (401K). Purchases for this plan are made on a biweekly basis.

      Book value per common share was $13.17 at September  30, 2002  compared to
$12.95 at December 31, 2001.

Utility Plant

      During the third quarter,  utility plant expenditures totaled $27,640,000,
including   $5,793,000  of  Company  funded   projects.   Year-to-date   capital
expenditures  through  September  30,  2002  have  been  $58,915,000,  including
$47,163,000 of Company funded  projects.  The 2002  Company-funded  construction
budget is $76,800,000.

      At September  30,  2002,  construction  work in progress  was  $52,144,000
compared to  $39,022,000  at  September  30,  2001.  Work in  progress  includes
projects  that are under  construction,  but not yet complete and in service.  A
main reason for the increase in work



in progress is the  $23,217,000  expended to date on the  Northeast  Bakersfield
Treatment  Plant.  This amount is included in work in progress at September  30,
2002.  The  $45  million  project  is  the  largest  construction  project  ever
undertaken by the Company.  It is  proceeding on schedule and on budget,  and is
expected to be in service before June 30, 2003.

      On September  30, 2002,  the Company  completed  the tax-free  exchange of
seven  surplus  properties to a contractor  for the new Customer and  Operations
Center in Torrance.  The Company occupied the new Customer and Operations Center
in January  2002 on a  month-to-month  lease  basis,  consolidating  four of its
southern  California  operating  districts  at a single  location.  Because  the
transaction  was structured as a property  exchange,  acquiring the new facility
did not require a  significant  expenditure  of cash.  The  combined  districts'
operations will provide for more efficient service to customers in the South Bay
area of Los Angeles County.  Under terms of the exchange agreement,  the Company
guaranteed the contractor's  bank loan during  construction of the new facility.
The new facility, which is valued at in excess of $7 million, served as security
to the Company for the guarantee.  When the property exchange was completed, the
contractor  paid  off the bank  loan,  and the  Company  was  released  from its
guarantee.

WATER SUPPLY

      Based on information from water management  agencies and Company developed
data,  the  Company  believes  that its  various  sources  of water  supply  are
sufficient to meet customer demand for the remainder of the year.  Historically,
about half of the water source is purchased  from  wholesale  suppliers with the
other half pumped from underground  wells. A small portion is developed  through
three local surface treatment plants.

      To safeguard its water supply and  facilities,  the Company has heightened
security at its facilities and taken added safety  precautions for our employees
and the water we  deliver  to our  customers.  While the  Company  does not make
public comments on its security  programs,  it has been in contact with federal,
state and  local law  enforcement  agencies  to  coordinate  and  improve  water
delivery  systems  security.  The Company has also  assigned a high  priority to
completing  work necessary to comply with new  Environmental  Protection  Agency
requirements  concerning  security of water facilities.  This effort encompasses
all of the Company's district operations.

ACQUISITIONS

Rio Grande Utility Corporation.

      On July 1, 2002,  after receiving state regulatory  approval,  the Company
acquired certain assets of Rio Grande Utility Corporation ("Rio Grande") through
its wholly-owned  subsidiary,  New Mexico Water Service Company  ("NMWSC").  The
purchase  includes the water and wastewater  assets of Rio Grande,  which serves
2,265  water and 1,600  sewer  customers  in  unincorporated  areas of  Valencia
County,  New Mexico,  located 30 miles south of Albuquerque.  The purchase price
was $2,300,000 in cash, plus assumption of $3,100,000 in outstanding  debt. Rate
base  for  the  system  is  approximately



$5,400,000.  Its  total  assets  were  $8,400,000  at June  30,  2002  of  which
$7,312,000 was for utility plant and $732,000 was for water rights.  A condensed
balance sheet of Rio Grande has not been presented  since the acquisition is not
material to the Company.

      The Rio  Grande  purchase  price was  allocated  to the fair  value of net
assets acquired,  including utility plant, water rights and assumed liabilities.
The results of operations for the three and nine month periods ending  September
30,  2002  include  the  operating  results  of Rio  Grande  from  the  date  of
acquisition.

      Pro forma results of operations have not been presented for the Rio Grande
acquisition because the effect of this purchase is not material. The preliminary
allocation of fair value is based on management's estimate of the fair value for
purchase  accounting  purposes at the date of  acquisition.  The purchase  price
allocations   are  subject  to  revision  as   management   obtains   additional
information.

      For 2001,  Rio Grande had gross revenue of  $1,485,000.  Its gross utility
plant in service at December 31, 2001 was  $12,458,000  and net utility plant in
service was $9,153,000.  The regulatory decision authorizing the purchase of Rio
Grande's  assets by NMWSC  included an  authorization  to increase  annual water
rates by $115,000.

Kaanapali Water Corporation

      In  August  2002,  the  Company  agreed to  acquire  the  Kaanapali  Water
Corporation  ("KWC")  for $7.7  million  in cash.  KWC  provides  water  utility
services  to 500  customers  in Maui,  Hawaii,  including  10 resorts  and eight
condominium projects. It posted 2001 revenues of $3.3 million, and has net plant
of  approximately  $7.3  million  and  current  assets  of  $0.4  million.   The
transaction  is subject to approval of the Hawaii  Public  Utilities  Commission
("HPUC") which is expected in first quarter of 2003. An  application  requesting
approval of the acquisition was filed with the HPUC in October 2003.

National Utilities Corporation.

      In June 2002,  NMWSC signed an agreement  to purchase  National  Utilities
Corporation for  approximately  $700,000.  National  Utilities  serves 700 water
customers  located adjacent to the Rio Grande water system and another 900 water
customers located 150 miles south of Albuquerque,  New Mexico. The purchase will
entitle  NMWSC to purchase up to 2,000  acre-feet of water  annually as required
for its  operations.  The  purchase is subject to the approval of the New Mexico
Public  Regulation  Commission.  Regulatory  approval  is  expected in the first
quarter of 2003.

      National  Utilities  had 2001  revenue  of  $575,000  and total  assets of
$1,425,000.  Its  net  utility  plant  in  service  at  December  31,  2001  was
$1,143,000.

ACCOUNTING PRONOUNCEMENTS

      In June  2001,  Statement  of  Financial  Accounting  Standards  No.  143,
"Accounting for Asset Retirement  Obligations" of long-lived  assets was issued.
The statement is effective for fiscal years  beginning  after June 15, 2002. The
Company has not yet  completed a full  review of the impact  that  adopting  the
statement  will have on its



financial  position or results of  operations,  and therefore is unable to state
the impact that  adopting the statement  will have on its financial  position or
results of operations.

      In April  2002,  Statement  of  Financial  Accounting  Standards  No. 145,
"Rescission of FASB  Statements  No. 4, 44, and 64,  Amendment of FASB Statement
No. 13, and Technical Corrections," was issued. The statement rescinds Statement
No. 4, which  required all gains and losses from  extinguishments  of debt to be
aggregated and, if material, classified as an extraordinary item, net of related
income tax  effect.  Upon  adoption of  Statement  No.  145,  companies  will be
required to apply the criteria in APB Opinion No. 30,  "Reporting the Results of
Operations - Reporting  the Effects of Disposal of a Segment of a Business,  and
Extraordinary,  Unusual and Infrequently  Occurring Events and  Transactions" in
determining  the   classification   of  gains  and  losses  resulting  from  the
extinguishments  of debt.  Statement  No.  145 is  effective  for  fiscal  years
beginning  after May 15, 2002. The Company  believes this  pronouncement  has no
material effect on its financial statements.

      In July 2002,  the FASB issued  Statement No. 146,  "Accounting  for Costs
Associated with Exit or Disposal Activities". The standard requires companies to
recognize  costs  associated  with  exit or  disposal  activities  when they are
incurred  rather than at the date of a commitment  to an exit or disposal  plan.
Examples of costs covered by the standard  include lease  termination  costs and
certain  employee  severance  costs that are  associated  with a  restructuring,
discontinued  operation,  plant  closing,  or other exit or  disposal  activity.
Statement  146 is to be applied  prospectively  to exit or  disposal  activities
initiated after December 31, 2002. The Company believes this  pronouncement  has
no material effect on its financial statements.

Item 3.

MARKET RISK

      The  Company  does  not  hold,  trade  in or  issue  derivative  financial
instruments and therefore is not exposed to risks these instruments present.

      The Company's market risk to interest rate exposure is limited because the
cost of long-term  financing and short-term bank borrowings,  including interest
costs,  is covered in consumer  water rates as approved by the  Commission.  The
Company does not have foreign operations;  therefore, it does not have a foreign
currency exchange risk.

      The Company's  sensitivity to commodity prices is most affected by changes
in purchased water and purchased power costs. Through the Commission's balancing
account  procedures,  increases in purchased water and purchased power costs can
generally be passed on to consumers.  The Company  manages other commodity price
exposure through the duration and terms of its vendor contracts.



Item 4.

CONTROLS AND PROCEDURES

(a) Evaluation of disclosure controls and procedures

Under the supervision  and with the  participation  of the Company's  management
including its Chief Executive Officer and Chief Financial  Officer,  the Company
conducted an evaluation of its disclosure controls and procedures,  as such term
is defined under Rule 13a-14c  promulgated under the Securities and Exchange Act
of 1934, as amended (the "Exchange  Act"),  within 90 days of the filing date of
this report.  Based on their  evaluation,  the Company's Chief Executive Officer
and Chief Financial Officer concluded that the Company's disclosure controls and
procedures are effective.

(b) Change in internal controls

There  have been no  significant  changes,  including  corrective  actions  with
regards to significant  deficiencies  or material  weaknesses,  in the Company's
internal  controls or in other  factors  that could  significantly  affect these
controls  subsequent to the date of the  evaluation  referenced in paragraph (a)
above.

PART II  OTHER INFORMATION

Item 1. Legal Proceedings

      Since  1995,  the State of  California's  Department  of Toxic  Substances
Control (DTSC) named the Company as a potential responsible party for cleanup of
a toxic  contamination  plume in the Chico groundwater.  The DTSC has prepared a
draft   report   titled   "Preliminary   Nonbinding   Allocation   of  Financial
Responsibility" for the cleanup which asserts that the Company's share should be
10 percent,  although DTSC views the potentially  responsible parties as jointly
and  severally  liable.  The DTSC  estimates  the total cleanup cost to be $8.69
million. 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 due to breaks in the city's sewer pipes. The DTSC contends that the
Company's  responsibility  stems from its operation of wells in the  surrounding
vicinity  that  caused  the  contamination  plume to spread.  While the  Company
intends to cooperate with the cleanup effort, it denies any  responsibility  for
the  contamination or the resulting cleanup and intends to vigorously resist any
action that may be brought  against it. The  Company  has  negotiated  with DTSC
regarding  dismissal of the Company from the claim in exchange for the Company's
cooperation  in the cleanup  effort.  To date no agreement has been reached with
DTSC  regarding  dismissal  of the  Company  from the DTSC  action.  The Company
believes  that it has  insurance  coverage  for this  claim  and that if it were
ultimately held responsible for a portion of the cleanup costs,  there would not
be a material adverse effect on the Company's  financial  position or results of
operations.



      Two  additional  toxic  contamination  plumes have been  identified in the
Chico  groundwater.  While DTSC has not taken any  assessment  action  regarding
these plumes,  it has indicated that it may designate the Company as a potential
responsible  party for  cleanup  of the  additional  plumes,  as it did when the
original  plume was  identified  in 1995.  The Company does not have  sufficient
information  concerning  the new plumes to  estimate  the cost of cleanup nor to
assess the basis of the Company's  involvement or responsibility for any cleanup
efforts.

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

      No  matters  were  submitted  to a vote of  stockholders  during the third
quarter, 2002.

Item 5. Other Information

CORPORATE GOVERNANCE

      On July 30, 2002, the Sarbanes-Oxley Act of 2002 was signed into law. This
legislation was enacted in response to concerns about  corporate  accountability
and  oversight as it relates to publicly  traded  companies.  Additionally,  the
Securities and Exchange  Commission and New York Stock Exchange have proposed or
adopted new rules dealing with corporate governance. Among the areas impacted by
the new requirements are:

o     Board of Directors membership and independence of directors

o     makeup and responsibilities of the Audit Committee, Compensation Committee
      and Nominating Committee

o     reporting of directors and officers trading in Company stock

o     disclosure  to investors of  additional  corporate  governance  compliance
      issues

      The  Company  is  actively  working  with  outside  counsel  and  internal
resources  to comply  with all  aspects of the new law,  rules and  regulations.
Internally,  a Corporate  Disclosure Committee made up primarily of officers was
formed  to  assist in  gathering  information  that is  important  to  corporate
governance and disclosure.

Item 6. Exhibits and Reports on Form 8-K

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

The exhibit  list  required by this Item is  incorporated  by  reference  to the
Exhibit Index attached to this report.

(b) Reports on Form 8-k

None



                                   SIGNATURES

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

                         CALIFORNIA WATER SERVICE GROUP
                         ------------------------------
                                   Registrant

November 7, 2002

                   By:        /s/ Gerald F. Feeney
                                Gerald F. Feeney
                     Vice President, Chief Financial Officer
                                  and Treasurer



                             Form 10-Q Certification

I, Peter C. Nelson, certify that:

      1.    I have  reviewed  this  quarterly  report on Form 10-Q of California
            Water Service Group;

      2.    Based on my knowledge,  this  quarterly  report does not contain any
            untrue statement of a material fact or omit to state a material fact
            necessary to make the statements made, in light of the circumstances
            under which such  statements  were made, not misleading with respect
            to the period covered by this quarterly report;

      3.    Based on my knowledge, the financial statements, and other financial
            information included in this quarterly report, fairly present in all
            material respects the financial condition, results of operations and
            cash flows of the  registrant as of, and for, the periods  presented
            in this quarterly report;

      4.    The registrant's other certifying officers and I are responsible for
            establishing and maintaining  disclosure controls and procedures (as
            defined  in  Exchange  Act  Rules  13a - 14 and  15d - 14)  for  the
            registrant and we have:

            a)    designed  such  disclosure  controls and  procedures to ensure
                  that  material   information   relating  to  the   registrant,
                  including its consolidated  subsidiaries,  is made known to us
                  by others  within  those  entities,  particularly  during  the
                  period in which this quarterly report is being prepared;

            b)    evaluated the  effectiveness  of the  registrant's  disclosure
                  controls and  procedures  as of a date within 90 days prior to
                  the filing  date of this  quarterly  report  (the  "Evaluation
                  Date"); and

            c)    presented in this quarterly  report our conclusions  about the
                  effectiveness of the disclosure  controls and procedures based
                  on our evaluation as of the Evaluation Date;

      5.    The  registrant's  other  certifying  officers and I have disclosed,
            based on our most recent  evaluation,  to the registrant's  auditors
            and the audit  committee  of  registrant's  board of  directors  (or
            persons performing the equivalent function):

            a)    all  significant  deficiencies  in the design or  operation of
                  internal   controls   which   could   adversely   affect   the
                  registrant's ability to record, process,  summarize and report
                  financial  data  and  have  identified  for



                  the registrant's  auditors any material weaknesses in internal
                  controls; and

            b)    any fraud,  whether or not material,  that involves management
                  or  other  employees  who  have  a  significant  role  in  the
                  registrant's internal controls; and

      6.    The registrant's  other certifying  officers and I have indicated in
            this quarterly report whether or not there were significant  changes
            in internal  controls or in other  factors that could  significantly
            affect internal  controls  subsequent to the date of our most recent
            evaluation,   including  any  corrective   actions  with  regard  to
            significant deficiencies and material weaknesses.

Date: November 7, 2002


/s/  Peter C. Nelson
- ------------------------------------
Peter C. Nelson
President and Chief Executive Officer



                             Form 10-Q Certification

I, Gerald F. Feeney, certify that:

      1.    I have  reviewed  this  quarterly  report on Form 10-Q of California
            Water Service Group;

      2.    Based on my knowledge,  this  quarterly  report does not contain any
            untrue statement of a material fact or omit to state a material fact
            necessary to make the statements made, in light of the circumstances
            under which such  statements  were made, not misleading with respect
            to the period covered by this quarterly report;

      3.    Based on my knowledge, the financial statements, and other financial
            information included in this quarterly report, fairly present in all
            material respects the financial condition, results of operations and
            cash flows of the  registrant as of, and for, the periods  presented
            in this quarterly report;

      4.    The registrant's other certifying officers and I are responsible for
            establishing and maintaining  disclosure controls and procedures (as
            defined  in  Exchange  Act  Rules  13a - 14 and  15d - 14)  for  the
            registrant and we have:

            a)    designed  such  disclosure  controls and  procedures to ensure
                  that  material   information   relating  to  the   registrant,
                  including its consolidated  subsidiaries,  is made known to us
                  by others  within  those  entities,  particularly  during  the
                  period in which this quarterly report is being prepared;

            b)    evaluated the  effectiveness  of the  registrant's  disclosure
                  controls and  procedures  as of a date within 90 days prior to
                  the filing  date of this  quarterly  report  (the  "Evaluation
                  Date"); and

            c)    presented in this quarterly  report our conclusions  about the
                  effectiveness of the disclosure  controls and procedures based
                  on our evaluation as of the Evaluation Date;

      5.    The  registrant's  other  certifying  officers and I have disclosed,
            based on our most recent  evaluation,  to the registrant's  auditors
            and the audit  committee  of  registrant's  board of  directors  (or
            persons performing the equivalent function):

            a)    all  significant  deficiencies  in the design or  operation of
                  internal   controls   which   could   adversely   affect   the
                  registrant's ability to record, process,  summarize and report
                  financial  data  and  have  identified  for



                  the registrant's  auditors any material weaknesses in internal
                  controls; and

            b)    any fraud,  whether or not material,  that involves management
                  or  other  employees  who  have  a  significant  role  in  the
                  registrant's internal controls; and

      6.    The registrant's  other certifying  officers and I have indicated in
            this quarterly report whether or not there were significant  changes
            in internal  controls or in other  factors that could  significantly
            affect internal  controls  subsequent to the date of our most recent
            evaluation,   including  any  corrective   actions  with  regard  to
            significant deficiencies and material weaknesses.

Date: November 7, 2002


/s/  Gerald F. Feeney
- ------------------------------------
Gerald F. Feeney
Vice President, Chief Financial Officer
  and Treasurer



                                  Exhibit Index

Exhibit     Description

4.1         Fourth  Supplement  to  Note  Agreement  dated  as of May  1,  2002,
            Pertaining  to the  issuance of  $20,000,000,  5.90% Series F Senior
            Notes due November 1, 2017

10.1        First  Amendment  dated  September  23,  2002 to the  Business  Loan
            Agreement   dated  August  1,  2001  between  Bank  of  America  and
            California  Water Service Company  modifying the 30-day  out-of-debt
            period

10.2        Second  Amendment  dated  September  23, 2002 to the  Business  Loan
            Agreement   dated  August  1,  2001  between  Bank  of  America  and
            California  Water Service Group and CWS Utility  Services  modifying
            the 30-day out-of-debt period

99.1        Chief  Executive  Officer   certification  of  financial  statements
            pursuant to 18 U.S.C.  Section 1350, as adopted  pursuant to Section
            906 of the Sarbanes-Oxley Act of 2002

99.2        Chief  Financial  Officer   certification  of  financial  statements
            pursuant to 18 U.S.C.  Section 1350, as adopted  pursuant to Section
            906 of the Sarbanes-Oxley Act of 2002