Exhibit 10.18

                                    SJW CORP.

                                  STOCK OPTION
                      DIVIDEND EQUIVALENT RIGHTS AGREEMENT
             AS AMENDED AND RESTATED EFFECTIVE AS OF JANUARY 1, 2005
             -------------------------------------------------------


RECITALS
- --------

     A.  Participant  has been  granted  one or more stock  options to  purchase
shares of the  Corporation's  Common Stock under the Plan (the  "Options").  The
Options also provide Participant with dividend equivalent rights with respect to
the  shares  of Common  Stock  subject  to those  Options.  Each such  option is
evidenced by a Notice of Grant and Stock  Option  Agreement  (collectively,  the
"Option Agreement").

     B. The Options with such dividend  equivalent  rights are more particularly
identified in attached Schedule A.

     C. The terms and conditions  governing  those dividend rights are currently
set forth in a Dividend  Equivalent  Rights  Agreement  for each such Option (or
other written document  evidencing those dividend equivalent rights with respect
to one or more of the Options).  Each such  agreement or other written  document
shall hereinafter be referred to collectively as the "Rights Agreement".

     D. Proposed Treasury  Regulations under Code Section 409A establish certain
requirements  with  respect to the payment of dividend  equivalent  rights which
must be satisfied in order to adverse income tax  consequences  to  Participant.
Those requirements will apply to the portion of each Option which was not vested
and exercisable as of December 31, 2004.

     E. The purpose of this amended and  restated  Agreement is to amend each of
the Rights  Agreements  relating  to the  Options so as to conform the terms and
conditions of each such agreement to the applicable distribution requirements of
Code Section 409A and the proposed Treasury Regulations thereunder.

     F. All capitalized  terms in this Agreement shall have the meaning assigned
to them in the Plan and the applicable Option Agreements.

     NOW, THEREFORE, it is hereby agreed as follows:

     1. Each of the Rights Agreements  pertaining to the Options,  to the extent
those agreements  pertain to Options (or portions thereof) which were not vested
and  exercisable  as of  December  31, 2004 is hereby  amended  and  restated as
follows, retroactive to January 1, 2005, with respect to each covered Option (or
portion thereof):

               (i) An Option  Deferred  Stock Account with respect to the Option
          shall continue to be maintained  for the  Participant on the books and
          records of the Corporation.



               (ii)  Each  time  a  dividend   is  paid  on  the   Corporation's
          outstanding  shares of Common  Stock after the Grant Date,  the Option
          Deferred  Stock Account will be credited with a dollar amount equal to
          the amount of that dividend paid per share multiplied by the number of
          shares of Common  Stock at the time  subject to the  Option  (plus the
          number of shares  previously  credited  to the Option  Deferred  Stock
          Account pursuant to the dividend  equivalent  rights  hereunder) as of
          the record date for the dividend;  provided,  however, that no further
          amounts shall be credited after the earlier of the fourth  anniversary
          of the Grant Date or the first exercise of the Option.

               (iii) As of the first business day in January each year, the cash
          dividend  amounts credited to the Option Deferred Stock Account during
          the immediately preceding calendar year shall be converted into a book
          entry of an additional  number of shares of Common Stock determined by
          dividing  (i)  those  cash  dividend  equivalent  amounts  by (ii) the
          average of the Fair Market  Value per share of Common Stock on each of
          the dates in the  immediately  preceding  calendar year on which those
          dividend amounts were credited to the Option Deferred Stock Account.

               (iv) The shares  credited to the Option  Deferred  Stock Account
          will vest at the same time and in the same manner as the Option Shares
          to which they are attributable vest. The shares which so vest shall be
          distributed to the  Participant in the form of actual shares of Common
          Stock issued under the Plan on the earlier of the following dates (the
          "Distribution  Date"): (i) the fourth anniversary of the Grant Date of
          the  Option  or (ii) the  date of the  Participant's  separation  from
          service (as  determined  in  accordance  with the  provisions  of Code
          Section 409A and the applicable Treasury Regulations thereunder) or as
          soon after such Distribution Date as administratively practicable, but
          in no event  later  than  the end of the  calendar  year in which  the
          Distribution  Date occurs or (if later) the fifteenth day of the third
          calendar month  following such date.  Such payment shall be subject to
          the Corporation's  collection of all applicable  withholding taxes. In
          no event  shall any  shares of Common  Stock  credited  to the  Option
          Deferred Stock Account be distributed to the Participant if and to the
          extent  those  shares  do not vest in  accordance  with the  foregoing
          provisions.

               (v)  Notwithstanding  any provision to the contrary  in the Plan,
          the Option Agreement or this Agreement,  no distribution which becomes
          due and payable by reason of the Participant's separation from service
          shall  be  made  to a  Participant  prior  to the  earlier  of (i) the
          expiration of the six (6)-month  period measured from the date of such
          separation  from service or (ii) the date of his or her death,  if the
          Participant is deemed at the time of such  separation  from service to
          be a "key employee" within the meaning of that term under Code Section
          416(i) and such delayed commencement is otherwise required in order to
          avoid a prohibited  distribution under Code Section  409A(a)(2).  Upon
          the  expiration of the  applicable  Code Section  409A(a)(2)  deferral
          period, all distributions deferred pursuant to this subparagraph shall
          be paid in a lump sum to the Participant.




     2. This Amended and Restated  Dividend  Equivalent  Rights Agreement shall,
with  respect to each  Option  identified  in attached  Schedule A,  replace the
Rights Agreement in effect for that Option immediately prior hereto, but only to
the extent that Option was not vested and  exercisable  as of December 31, 2004.
Except  for the  modifications  effected  by this  Agreement,  all the terms and
provisions  of each  Option  shall  continue  in full force and effect and shall
continue  to be  governed  by the  terms of the Plan and the  applicable  Option
Agreement  and (to the extent  that  Option was  vested  and  exercisable  as of
December 31, 2004) the Dividend  Equivalent  Rights Agreement in effect for that
Option immediately prior hereto.


     IN WITNESS  WHEREOF,  the parties have  executed  this  Agreement as of the
_______ day of _______________, 2006.



                               SJW CORP.

                               By: ______________________________________

                               Title: ____________________________________



                               __________________________________________
                                               PARTICIPANT





                                   SCHEDULE A

                            LIST OF COVERED OPTIONS*
                            ------------------------



  Grant         Exercise Price              Option               Expiration
  Date           Per Share ($)             Shares (#)                Date
  ----           -------------             ----------                ----










_______________________
* The  listed  options  are  subject  to  this  Amended  and  Restated  Dividend
Equivalent Rights Agreement only to the extent those options were not vested and
exercisable as of December 31, 2004.