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.

Arizona's Water Companies
Arizona's Sewer Companies

For a closer view of each county, click on the county itself or its name in the legend.

Hot Topics

  Curtailments & Moratoriums
Arsenic - FAQ's
       ADEQ's Arsenic Master Plan
  Water Conservation Tips


 Industry Specific Information
General Information
Consumer Complaint Process
FRequently Asked Questions
Financial Assistance Programs
Water & Sewer Terms
Applications and Forms
Water Rules
Proposed Water Rules

Sewer Rules
Proposed Sewer Rules

News and Calendars

News Releases


Open Meeting Agendas


Hearing Calendars