Kristin K Mayes
Commissioner 		William Mundell
Commissioner 		Mike Gleason
Chairman 		Jeff Hatch-Miller
Commissioner 		Gary Pierce
Commissioner

Arizona Corporation Commission
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Phoenix Office
Arizona Corporation Commission
1200 W. Washington St.
Phoenix, AZ 85007
(602) 542-4251
(800) 222-7000

Utilities Division
Ernest G. Johnson - Director

Tucson Office
Arizona Corporation Commission
400 W. Congress, Ste. 218
Tucson, AZ 85701
(520) 628-6550
(800) 535-0148
Electric Gas Telephone Water / Sewer
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General Water and Sewer Information

The Arizona Corporation Commission maintains regulatory authority over private water companies and private sewer companies throughout Arizona. There are presently more than 400 individual water systems operated by nearly 350 companies under our jurisdiction. There are approximately 21 sewer companies and 20 combination water and sewer providers that we regulate. Multiple systems can be operated by the same utility company.
Several other agencies also have jurisdiction over aspects of running a reliable water system. Two divisions within the Arizona Department of Environmental Quality (ADEQ) have regulatory authority. ADEQ's Waste Programs Division deals with solid waste treatment and disposal, and therefore is concerned with sewer systems. ADEQ's Water Quality Division has the responsibility of ensuring the safety of drinking water from public water systems. Questions related to water quality, water pollution or contaminants in drinking water should be directed to ADEQ.
County health authorities also oversee public health issues associated with water and sewer systems.
You will find our Frequently Asked Questions page very helpful if you would like to know more about how we regulate water and sewer companies in Arizona. Popular topics may have their own links so please enjoy browsing our site and learning more about public utility regulation.
If you are not sure if the ACC has jurisdiction over a water or sewer company, please call us Monday through Friday between 8:00 a.m. and 5:00 p.m.

Within Metro Phoenix: 602-542-4251
Within Metro Tucson: 520-628-6550

Outside the Metro Phoenix and Tucson areas, but within Arizona, call toll free

1-800-222-7000 connects you to the Phoenix Office and
1-800-535-0148 connects you to the Tucson Office
* For Business Entity or Utility searches use the STARPAS or eDocket Icons.
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For a list of Arizona Corporations Commission Phone numbers click here