Water-Wastewater

water rate case summary

2017-19 Water Rate Case

According to a September 2015 decision from the Arizona Corporation Commission(AzCC), EPCOR was required to file a water rate case. The company filed the case August 18, 2017, giving the AzCC the information it needed to make a decision on the policy of water consolidation, based on financial data from 2016. The two options were:

  • Keep the 11 water districts the way they were (standalone)
  • Or, bring them all together as one district (statewide consolidation)

View the docket to read the Administrative Law Judge's Recommended Opinion and Order, which recommended standalone rates. On Jan. 25, 2019, the Commission ended the case with no resolution after a 2-2 deadlocked vote. Therefore, EPCOR was ordered to file an application for interim rates. On March 28, 2018 in a vote of 3-2, interim rates were passed. They are volumetric in nature (a surcharge based on each 1,000 gallons used). The rates will remain in effect until such a time as EPCOR files an entirely new rate case, no later than May 1, 2020, using 2019 data. That process could take 12-24 months to resolve, based on the timeline of the last case. If rates in that case are LESS than the interim rates, customers will be refunded the difference with interest.

 View the docket for the interim rate case.

The ACC intervened in the cases on behalf of Anthem residents. With questions about the case or the final decision, residents may contact EPCOR directly at 1-800-383-0834 or ratecasequestions@epcor.com

Supporting Documents for 2017-18 Rate Case


wastewater case summary

2016-17 Wastewater Rate Case

The Arizona Corporation Commission, at their open meeting June 13, 2017, approved full consolidation of the five wastewater districts. The fully phased-in flat rate will be $38.59 per month (with no additional charge based on water usage). The phase-in will take place in five annual steps, as shown below:

Step 1; 7/1/17: $59.15
Step 2; 7/1/18: $55.39 
Step 3; 7/1/19: $51.63
Step 4; 7/1/20: $47.89
Step 5; 7/1/21: $38.59

Historical documents available upon request. Additional information on water-wastewater rate design is also available on EPCOR's website.

Additional Resources