1200 W. Washington Street

Phoenix, AZ 85007-2927


Phoenix Office: (602) 542-4251


Tucson Office: (520) 628-6550


Toll Free In-State Only:

1-(800) 222-7000


Email: UtilitiesDiv@azcc.gov

The use of inappropriate or threatening language when submitting a complaint to the above email may result in your comments not being docketed and no action taken regarding your comments


General Water and Wastewater Information

The Arizona Corporation Commission maintains regulatory authority over private water companies and private wastewater companies throughout Arizona. There are presently more than 400 individual water systems operated by nearly 350 companies under our jurisdiction. There are approximately 21 wastewater companies and 20 combination water and wastewater 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 wastewater 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 wastewater systems.

You will find our Frequently Asked Questions page very helpful if you would like to know more about how we regulate water and wastewater 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 wastewater company, please contact us.

Stay Connected

Check here to sign up for Consumer Alerts from the Corporation Division. To receive alerts for your business register at eCorp.azcc.gov.Please call 602-542-3026 with questions for the Corporations Division.

Check here to sign up for Notices and Agendas for Commission Meetings, Hearings and Appearances. Have questions about Notices and Agendas, click here for contact information.

Check here to receive the latest Commission News Releases and information. Please call 602-542-0728 with any questions.

Arizona Corporation Commission

1200 W. Washington Street

Phoenix, AZ 85007


Corporations Division

1300 W. Washington Street

Phoenix, AZ 85007


Tucson Office (Walk-ins only)

400 W. Congress Street

Tucson, AZ 85701