Exhibit 31.2

                        CERTIFICATION


I, Angela Yip, certify that:

1.  I have reviewed this quarterly report on Form 10-Q of SJW
Corp. (the "registrant"):

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 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 officer and I are
responsible for establishing and maintaining disclosure controls
and procedures (as defined in Exchange Act Rules 13a-15(e) and
15d-15(e)) for the registrant and have:

    a.  Designed such disclosure controls and procedures or
caused such disclosure controls and procedures to be designed
under our supervision, 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 report is
being prepared;

    b.  [Paragraph omitted pursuant to SEC Release Nos. 33-8238
and 34-47986];

    c.  Evaluated the effectiveness of the registrant's
disclosure controls and procedures and presented in this report
our conclusions about the effectiveness of the disclosure
controls and procedures, as of the end of the period covered by
this report based on such evaluation; and

    d.  Disclosed in this report any change in the registrant's
internal control over financial reporting that occurred during
the registrant's most recent fiscal quarter (the registrant's
fourth fiscal quarter in the case of an annual report) that has
materially affected, or is reasonably likely to materially
affect, the registrant's internal control over financial
reporting; and

5.  The registrant's other certifying officer and I have
disclosed, based on our most recent evaluation, of internal
control over financial reporting, 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.


Date:    August 8, 2003          /s/ Angela Yip
                                 --------------------
                                 ANGELA YIP
                                 Chief Financial Officer and
                                 Treasurer