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



Applications and Forms

Consumer Complaint Process

Financial Assistance Programs

Frequently Asked Questions

General Information

Industry Specific Information

National Association of Regulatory Utility Commissioners (NARUC)

Wastewater Rules

Water Rules


Hot Topics


ADWR Blue Ribbon Panel - Website 

 Blue Ribbon Panel Press - Jan 8, 2010

Curtailments & Moratoriums

Arsenic - FAQ's
ADEQ's Arsenic Master Plan

Water Conservation Tips


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: