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