Exhibit 24

                           LIMITED POWER OF ATTORNEY
                      FOR SECTION 16 REPORTING OBLIGATIONS

        Know all by these presents that the undersigned hereby makes,
constitutes and appoints each of Joanne Ellsworth and Jeff Risenmay, each acting
individually, as the undersigned's true and lawful attorney-in-fact, with full
power and authority as hereinafter described on behalf of and in the name, place
and stead of the undersigned to:

        (1)     prepare and execute Forms 3, 4, and 5 (including any amendments
thereto) with respect to the common stock of Global Water Resources, Inc., a
Delaware corporation (the "Company"), and to file the same with the United
States Securities and Exchange Commission, any national securities exchanges and
the Company, as considered necessary or advisable under Section 16(a) of the
Securities Exchange Act of 1934 and the rules and regulations promulgated
thereunder, as amended from time to time (the "Exchange Act") and the
Sarbanes-Oxley Act of 2002;

        (2)     seek or obtain, as the undersigned's representative and on the
undersigned's behalf, information on transactions in the Company's common stock
from any third party, including brokers, employee benefit plan administrators
and trustees, and the undersigned hereby authorizes any such person to release
any such information to such attorney-in-fact and approves and ratifies any such
release of information; and

        (3)     perform any and all other acts which in the discretion of such
attorney-in-fact are necessary or desirable for and on behalf of the undersigned
in connection with the foregoing.

The undersigned acknowledges that:

        (a) any documents prepared and/or executed by any of such
attorney-in-fact on behalf of the undersigned pursuant to this power of attorney
will be in such form and will contain such information and disclosure as such
attorney-in-fact, in his or her discretion, deems necessary or desirable;

        (b) this power of attorney authorizes, but does not require, such
attorney-in-fact to act in his or her discretion on information provided to such
attorney-in-fact without independent verification of such information;

        (c) neither the Company nor such attorney-in-fact assumes (i) any
liability for the undersigned's responsibility to comply with the requirements
of the Exchange Act, (ii) any liability of the undersigned for any failure to
comply with such requirements, or (iii) any obligation or liability of the
undersigned for profit disgorgement under Section 16(b) of the Exchange Act; and

        (d) this power of attorney does not relieve the undersigned from
responsibility for compliance with the undersigned's obligations under the
Exchange Act, including without limitation the reporting requirements under
Section 16(a) of the Exchange Act.

        The undersigned hereby gives and grants the foregoing attorney-in-fact
full power and authority to do and perform all and every act and thing
whatsoever requisite, necessary or appropriate to be done in and about the
foregoing matters as fully to all intents and purposes as the undersigned might
or could do if present, hereby ratifying all that such attorney-in-fact of, for
and on behalf of the undersigned shall lawfully do or cause to be done by virtue
of this power of attorney.

        This power of attorney shall remain in full force and effect until
revoked by the undersigned in a signed writing delivered to the Corporate
Secretary of the Company.

                             SIGNATURE PAGE FOLLOWS

        IN WITNESS WHEREOF, the undersigned has caused this power of attorney to
be executed as of this 21st day of April, 2016.

                                        /s/ William S. Levine
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                                        Signature


                                        William S. Levine
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                                        Print Name