1200 W. Washington Street
Phoenix, AZ 85007-2927
Phoenix Office: (602) 542-4251
Tucson Office: (520) 628-6550
Toll Free In-State Only:
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. Questions related to water quality, water pollution or contaminants in drinking water should be directed to ADEQ. For information regarding these other agencies, visit our Frequently Asked Questions page for helpful information to know more about how we regulate water and wastewater companies in Arizona.
Water Companies with ACC Water Conservation Tariffs
The ACC sometimes requires a water company to implement best management practices (BMPs) selected from Arizona Department of Water Resources list of BMP's.
For more information, go to: