SECURITIES AND EXCHANGE COMMISSION
                     Washington, D.C.  20549

                           FORM 10-K/A
                         Amendment No. 1

  [X]  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
       SECURITIES EXCHANGE ACT OF 1934

           For the fiscal year ended December 31, 2004
                               OR
  [ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
       SECURITIES EXCHANGE ACT OF 1934

                    For the transition period
                               to
                  Commission file number 1-8966

                            SJW CORP.
    (Exact name of registrant as specified in its charter)

           California                       77-0066628
(State or other jurisdiction of          (I.R.S. Employer
 incorporation or organization)         Identification No.)

  374 West Santa Clara Street, San Jose, California,   95196
  (Address of principal executive offices)           (Zip Code)

Registrant's telephone number, including area code 408-279-7800
Securities Registered Pursuant to Section 12(b) of the Act:

         Title of                     Name of each exchange on
        each class                         which registered
    -------------------              --------------------------
Common Stock, Par Value $1.042        American 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 the Form 10-K or any
amendment to the Form 10-K.  [ ]

     Indicate by check mark whether registrant is an accelerated
filer (as defined in Exchange Act Rule 12b-2).  Yes  [X]  No [ ]

     The aggregate market value of the common stock held by non-
affiliates of the registrant on June 30, 2004 was $219,373,236.

Shares of common stock outstanding on March 7, 2005 ? 9,135,573.

                Documents Incorporated by Reference

     Portions of the Registrant's Proxy Statement relating to
the Registrant's 2005 Annual Meeting of Shareholders, to be held
on April 28, 2005, are incorporated by reference into Part III
of the Form 10-K where indicated.





                      EXPLANATORY NOTE

SJW Corp. is filing this Form 10-K/A solely to:

1.  Add the electronic signatures and correct the date of the
required signatories of the Annual Report on Form 10-K for the
year ended December 31, 2004 and filed with the Securities and
Exchange Commission on March 7, 2005 (the "Form 10-K");

2.  Include the date next to the Chairman's signature;

3.  Add the date and electronic signature of KPMG LLP on the
Consent of Independent Registered Public Accounting Firm, filed
as Exhibit 23 of the Form 10-K; and

4.  Add the date and electronic signatures of the principal
executive officer and principal financial officer on the
certifications pursuant to Exchange Act Rule 13a-14(a), filed as
Exhibits 31.1 and 31.2 of the Form 10-K.

     No other changes were made to the annual report on Form 10-
K.  At the time of filing the Form 10-K with the Securities and
Exchange Commission, SJW Corp. had a manually signed and dated
copy of the Form 10-K, a manually signed and dated Consent of
Independent Registered Public Accounting Firm and manually
signed and dated certifications of the principal executive
officer and principal financial officer pursuant to Exchange Act
Rule 13a-14(a).  The omissions and corrections set forth above
resulted from clerical errors.  In accordance with the rules of
the Securities and Exchange Commission, updated certifications
of the principal executive officer and principal financial
officers pursuant to Exchange Act Rule 13a-14(a) have been filed
as Exhibits 31.3 and 31.4.



Item 15.  Exhibits and Financial Statement Schedules

SJW Corp. filed a current report on Form 8-K with the Securities
and Exchange Commission on November 1, 2004 to furnish its press
release to announce the financial results for the third quarter
ended September 30, 2004 under Item 12 thereof.

On December 13, 2004, SJW Corp. filed Form 8-K with the
Securities and Exchange Commission to announce its entry into a
Material Definitive Agreement under Item 1 thereof.

(1)  Financial Statements
                                                            Page

Report of Independent Accounting Firm                         27
Report of Internal Controller over Financial Reporting        28
Consolidated Balance Sheets as of December 31, 2004 and 2003  29
Consolidated Statements of Income and Comprehensive Income
  for the years ended December 31, 2004, 2003 and 2002        31
Consolidated Statements of Changes in Shareholders' Equity
  for the years ended December 31, 2004, 2003 and 2002        32
Consolidated Statements of Cash Flows for the years
  ended December 31, 2004, 2003 and 2002                      33
Notes to Consolidated Financial Statements                    34

(2)  Financial Statement Schedule

  Valuation and Qualifying Accounts and Reserves,
  Years ended December 31, 2004 and 2003                      54

All other schedules are omitted as the required information is
inapplicable or the information is presented in the financial
statements or related notes.

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

See Exhibit Index located immediately following paragraph (b) of
this Item 15.

The exhibits filed herewith are attached hereto (except as
noted) and those indicated on the Exhibit Index which are not
filed herewith were previously filed with the Securities and
Exchange Commission as indicated.

                          EXHIBIT INDEX
Exhibit
No.                        Description
- -------                    -----------
2        Plan of Acquisition, Reorganization, Arrangement,
         Liquidation or Succession:

2.1      Registration Rights Agreement entered into as of
         December 31, 1992 among SJW Corp., Roscoe Moss, Jr. and
         George E. Moss.  Filed as Exhibit 2.1 to Form 10-K
         March 12, 2004.  S.E.C. File No. 1-8966.

3        Articles of Incorporation and By-Laws:

3.1      Restated Articles of Incorporation and By-Laws of SJW
         Corp., defining the rights of holders of the equity
         securities of SJW Corp.

3.2      Certificate of Amendment of SJW Corp. amending the
         restated Articles of Incorporation.  Filed as Exhibit
         3.2 to the Form 10-K filed on March 7, 2005.  S.E.C.
         File No.  1-8966.

3.3      By-Laws of SJW Corp. as amended.  Filed as Exhibit 3.3
         to the Form 10-K filed on March 7, 2005.  S.E.C. File
         No. 1-8966.

4        Instruments Defining the Rights of Security Holders,
         including Indentures:

         No current issue of the registrant's long-term debt
         exceeds 10 percent of its total assets.  SJW Corp.
         hereby agrees to furnish upon request to the Commission
         a copy of each instrument defining the rights of
         holders of unregistered senior and subordinated debt of
         the company.

10       Material Contracts:

10.1     Water Supply Contract dated January 27, 1981 between
         San Jose Water Works and the Santa Clara Valley Water
         District, as amended.  Filed as Exhibit 10.1 to Form
         10-K for the year ended December 31, 2001.

10.2     Resolution for Directors' Retirement Plan adopted by
         SJW Corp. Board of Directors as amended on September
         22, 1999.  Filed as an Exhibit to 10Q for the period
         ending September 30, 1999.  S.E.C. File No. 1-8966.
         (2)

10.3     Resolution for Directors' Retirement Plan adopted by
         San Jose Water Company's Board of Directors as amended
         on September 22, 1999.  Filed as an Exhibit to 10-Q for
         the period ending September 30, 1999.  S.E.C. File No.
         1-8966.  (2)

10.4     Resolution for Directors' Retirement Plan adopted by
         SJW Land Company Board of Directors on September 22,
         1999.  Filed as an Exhibit to 10-Q for the period
         ending September 30, 1999.  S.E.C. File No. 1-8966.
         (2)

10.5     SJW Corp. Long-Term Incentive Plan, adopted by SJW
         Corp. Board of Directors March 6, 2002.  Filed as an
         Exhibit to Form 10-Q for the period ended June 30,
         2002.  (2)

10.6     Limited Partnership Agreement of 444 West Santa Clara
         Street, L. P. executed between SJW Land Company and
         Toeniskoetter & Breeding, Inc. Development.  Filed as
         an Exhibit to 10-Q for the period ending September 30,
         1999.  S.E.C. File No. 1-8966.

10.7     San Jose Water Company Executive Supplemental
         Retirement Plan adopted by San Jose Water Company Board
         of Directors, as restated to reflect amendments made
         through May 1, 2003.  Filed as an Exhibit to Form 10-Q
         for the period ended June 30, 2003.  S.E.C. File No. 1-
         8966. (2)

10.8     SJW Corp. Executive Severance Plan adopted by SJW Corp.
         Board of Directors, as restated to reflect amendments
         made through May 1, 2003.  Filed as an Exhibit to Form
         10-Q for the period ended June 30, 2003.  S.E.C. File
         No. 1-8966.  (2)

10.9     SJW Corp. Long-Term Incentive Plan, adopted by SJW
         Corp. Board of Directors, as amended on March 3, 2003.
         Filed as an Exhibit to Form 10-Q for the period ended
         June 30, 2003.  S.E.C. File No. 1-8966.  (2)

10.10    Chief Executive Officer Employment Agreement, as
         restated on June 27, 2003.  Filed as an Exhibit to Form
         10-Q for the period ended June 30, 2003.  S.E.C. File
         No. 1-8966.  (2)

10.11    Standard Form of Stock Option Agreement-subject to
         changes per Employment Agreement, as adopted by the SJW
         Corp. Board of Directors on April 29, 2003.  Filed as
         an Exhibit to Form 10-Q for the period ended June 30,
         2003.  S.E.C. File No. 1-8966.  (2)

10.12    Chief Executive Officer SERP Deferred Restricted Stock
         Award, as restated on June 27, 2003.  Filed as an
         Exhibit to Form 10-Q for the period ended June 30,
         2003.  S.E.C. File No. 1-8966.  (2)

10.13    Form of Stock Option Agreement with Dividend Equivalent
         Agreement as adopted by the Board of Directors on April
         29, 2003.  Filed as an Exhibit to Form 10-Q for the
         period ended June 30, 2003.  S.E.C. File No. 1-8966.
         (2)

10.14    Form of Directors Deferred Restricted Stock Program as
         adopted by SJW Corp. Board of Directors on July 29,
         2003.  Filed as an Exhibit to 10-Q for the period
         ending September 30, 2003.  S.E.C. File No. 1-8966.
         (2)

10.15    Form of Directors Annual Retainer Fee Deferred Election
         Agreement, as adopted by SJW Corp. Board of Directors
         on July 29, 2003.  Filed as an Exhibit to 10-Q for the
         period ending September 30, 2003.  S.E.C. File No. 1-
         8966.  (2)

10.16    First Amendment dated March 1, 2004 to San Jose Water
         Company's Executive Supplemental Retirement Plan
         adopted by the San Jose Water Company Board of
         Directors.  Filed as an Exhibit to Form 10-Q for the
         period ending March 31, 2004.  SEC File No. 1-8966.
         (2)

10.17    San Jose Water Company Special Deferral Election Plan
         adopted by San Jose Water Company Board of Directors on
         December 9, 2004.  Filed as Exhibit 99.1 of Form 8-K on
         December 13, 2004.  SEC File No. 1-8966.  (2)

10.18    First Amendment to the San Jose Water Company Special
         Deferral Election Plan adopted by the Board of
         Directors January 27, 2005.  Filed as Exhibit 10.18 to
         the Form 10-K filed on March 7, 2005.  S.E.C. File No.
         1-8966. (2)

21.1     Subsidiaries of SJW Corp. filed as an Exhibit to the
         Annual Report on Form 10-K for the year ended December
         31, 2002.  SEC File No. 1-8966.

23       Consent of Independent Registered Public Accounting
         Firm. (1)

31.1     Certification Pursuant to Rule 13a-14(a)/15d-14(a) by
         President and Chief Executive Officer.  (1)

31.2     Certification Pursuant to Rule 13a-14(a)/15d-14(a) by
         Chief Financial Officer and Treasurer.  (1)

31.3     Certification Pursuant to Rule 13a-14(a)/15d-14(a) by
         President and Chief Executive Officer.  (1)

31.4     Certification Pursuant to Rule 13a-14(a)/15d-14(a) by
         Chief Financial Officer and Treasurer.  (1)

32.1     Certification Pursuant to 18 U.S.C. Section 1350 by
         President and Chief Executive Officer, as adopted
         pursuant to Section 906 of the Sarbanes-Oxley Act of
         2002.  Filed as Exhibit 32.1 to the Form 10-K filed on
         March 7, 2005.  S.E.C. File No. 1-8966.

32.2     Certification Pursuant to 18 U.S.C. Section 1350 by
         Chief Financial Officer and Treasurer, as adopted
         pursuant to Section 906 of the Sarbanes-Oxley Act of
         2002.  Filed as Exhibit 32.2 to the Form 10-K filed on
         March 7, 2005.  S.E.C. File No. 1-8966.

        (1)  Filed currently herewith.

        (2)  Management contract or compensatory plan or
             agreement.

In accordance with the Securities and Exchange Commission's
requirements, SJW Corp. will furnish copies of any exhibit upon
payment of 30 cents per page fee.

To order any exhibit(s), please advise the Secretary, SJW Corp.,
374 West Santa Clara Street, San Jose, CA  95196, as to the
exhibit(s) desired.

On receipt of your request, the Secretary will provide to you
the cost of the specific exhibit(s).  The Secretary will forward
the requested exhibits upon receipt of the required fee.

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.

                              SJW CORP.

Date:  March 7, 2005          By /s/ Drew Gibson
                              DREW GIBSON, Chairman,
                              Board of Directors


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:  March 1, 2005         By /s/ W. Richard Roth
                             W. RICHARD ROTH, President,
                             Chief Executive Officer and Member,
                             Board of Directors


Date:  March 1, 2005         By /s/ Angela Yip
                             ANGELA YIP, Chief Financial Officer


Date:  March 1, 2005         By /s/ Victor K. Wong
                             VICTOR K. WONG, Controller
                             (Chief Accounting Officer)


Date:  March 1, 2005         By /s/ Mark L. Cali
                             MARK L. CALI, Member,
                             Board of Directors


Date:  March 1, 2005         By /s/ J. Philip DiNapoli
                             J. PHILIP DINAPOLI, Member,
                             Board of Directors


Date:  March 1, 2005         By /s/ Drew Gibson
                             DREW GIBSON, Member,
                             Board of Directors


Date:  March 1, 2005         By /s/ Douglas R. King
                             DOUGLAS R. KING, Member,
                             Board of Directors


Date:  March 1, 2005         By  /s/ George E. Moss
                             GEORGE E. MOSS, Member,
                             Board of Directors


Date:  March 1, 2005         By  /s/ Charles J. Toeniskoetter
                             CHARLES J. TOENISKOETTER, Member,
                             Board of Directors


Date:  March 1, 2005         By /s/ Frederick R. Ulrich, Jr.
                             FREDERICK R. ULRICH, JR. Member,
                             Board of Directors

SIGNATURE

     Pursuant to the requirements of Section 13 or 15(d) of the
Securities Exchange Act of 1934, the registrant has duly caused
this report on Form 10-K/A to be signed on its behalf by the
undersigned, thereunto duly authorized.

                             SJW CORP.


Date:  March 24, 2005        By /s/ Angela Yip
                             ANGELA YIP, Chief Financial Officer