Skip ribbon commands
Skip to main content

​Current water and wastewater rates in the San Tan District

Rates, Tariffs, Rules & Regulations

Water and Wastewater Tariff

Central Arizona Groundwater Replenishment District

The Central Arizona Groundwater Replenishment District (CAGRD) is a division of the Central Arizona Project that helps water users in Maricopa, Pima and Pinal counties meet their water supply needs. As a Member Service Area of the CAGRD, the San Tan district pays the CAGRD an annual invoice and assesses a CAGRD adjuster fee to customers to defray this expense. This fee shows up as a regular, recurring line item in customers' monthly water bills. The fee assessed to customers is approved by the ACC through a proposal filed each October.

The fee is based on actual water use within the San Tan system along with the CAGRD's current rates and adjusts annually. Depending on where you live within the San Tan service territory, this adjustment may show up as a slight increase or decrease in the CAGRD line item on your water bill.

The CAGRD can be complicated to understand, but plays a critical role in assuring a guaranteed water supply for water users in Maricopa, Pima, and Pinal counties. For more information about how the CAGRD works, please visit the Central Arizona Project website.

Other taxes and fees on your bill

Your bill from EPCOR provides you with detail on every tax or fee that may apply to your service. Here are a few examples – not all may apply to you. EPCOR does not keep any taxes collected.

Water Use Tax: Required by the state of Arizona on all water sales, it is charged at a rate of $0.0065 per thousand gallons. A customer who uses 10,000 gallons will see a charge of 7 cents on their bill.

State Tax: Also required by the state, this 5.6% tax is charged on all water service-related charges, including the basic service charge, how much water you use, and fees like CAGRD that we may collect.

Pinal County Tax: Required by Pinal County and previously called a “state tax" on your Johnson Utilities bill, the Pinal County tax is 1.6% of your “total water charges".

Town of Florence Tax: Charged only to customers within town limits, 2% of your “total water charges" are collected for the Town of Florence.

Town of Florence Franchise fee: Remitted to the Town of Florence, this fee allows EPCOR to work in easements and other facilities to keep your service safe and reliable. It is calculated as 5% of your water and wastewater charges, excluding CAGRD fees.

Town of Queen Creek Tax: Charged only to customers within town limits, 2.25% of your “total water charges" are collected for the Town of Queen Creek.

​Third Party Disclaimer​


EPCOR's website may provide listing of and/or links to third party websites as a convenient information service only. EPCOR accepts no responsibility or liability for the privacy practices, content, opinions, accuracy, and administration of such other websites, nor do we monitor or endorse these websites.