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​Interim rate application for Arizona water districts

Rates for service in EPCOR's 11 water districts are set by the Arizona Corporation Commission (ACC) based on what it cost to provide your service anywhere from roughly five to 25 years ago. Operating costs have changed significantly in that time and more than $150 million has been spent to repair and replace the infrastructure—pipes, meters, valves, plants, etc.—that brings water to your home.  

On January 25, 2019, the Chairman of the ACC ordered EPCOR to file an application for interim rates to recover changes in operating costs since rates were last set in each district.

A decision on interim rates must be made by the ACC within 60 days from the day the application was filed, plus a day for each day of hearing. EPCOR's application was filed January 31, 2019. Public comment will be taken on February 19, and a hearing is scheduled for February 20-21, 2019. We expect a decision from the ACC in March 2019.

What does that mean for you?

Current rates for your district remain in effect and will continue to appear on your bill as they do today. If interim rates are approved by the ACC, a surcharge will be calculated per district and added to bills. You pay for as much water as you use – below is an example for a residential customer using an average of 7,000 gallons of water per month.


Supporting documents

What's next

The Arizona Corporation Commission (ACC) set a schedule for the interim rate application, including a public hearing on February 20-21, 2019. Public comment will be taken February 19.

To share your perspective on interim water rates, you can submit your comments by mail to the ACC, referencing Docket #WS-01303A-19-0011:

Arizona Corporation Commission
Consumer Services Section
1200 W Washington Street
Phoenix, AZ 85007

Comments can also be submitted by email. For instructions, visit