Exhibit 32.1


                      CERTIFICATION PURSUANT TO
                        18 U.S.C. SECTION 1350
                        AS ADOPTED PURSUANT TO
               SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


In connection with the Quarterly Report of SJW Corp. (the
"Company") on Form 10-Q for the quarterly period ended September
30, 2004 as filed with the Securities and Exchange Commission on
the date hereof (the "Report"), I, W. Richard Roth, President
and Chief Executive Officer of the Company, certify, pursuant to
18 U.S.C. Section 1350, as adopted pursuant to Section 906 of
the Sarbanes-Oxley Act of 2002, that to my knowledge:

     (1)  The Report fully complies with the requirements of
section 13(a) or 15(d) of the Securities Exchange Act of 1934;
and

     (2)  The information contained in the Report fairly
presents, in all material respects, the financial condition and
results of operations of the Company.



/s/ W. Richard Roth
- -------------------
W. RICHARD ROTH
President and Chief Executive Officer
(Principal Executive Officer)

November 8, 2004