POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints W. Richard Roth, Suzy Papazian and Willie D. Brown, and each of them,
her true and lawful attorney-in-fact to:
(a)	execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer, director, and/or 10% stockholder of SJW Corp. (the "Company"),
any and all Form 3, 4, and 5 reports in accordance with Section 16(a) of the
Securities Exchange Act of 1934 and the rules thereunder;
(b)	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form 3, 4, or 5
report and timely file such form with the United States Securities and Exchange
Commission and any stock exchange or similar authority; and
(c)	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
undersigned, pursuant to this Power of Attorney, shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in his or
her discretion.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or his or her
substitute or substitutes, shall lawfully do or cause to be done by virtue of
this power of attorney and the rights and powers herein granted.  The
undersigned acknowledges that the foregoing attorneys in-fact, in serving in
such capacity at the request of the undersigned, are not assuming, nor is the
Company assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Form 3, 4, and 5 reports with respect
to the undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing delivered
to the foregoing attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of the date set forth below.

/s/ Debra Man
Signature

Debra Man
Print Name

March 23, 2016
Date