Prescott residents often ask whether their drinking water is safe and where it comes from. The City of Prescott publishes annual water quality reports to provide transparency about the city’s water system, testing, and regulatory compliance.

The data show that Prescott’s drinking water meets all state and federal safety standards and is monitored extensively year-round.

Where Prescott’s Drinking Water Comes From

Prescott’s drinking water comes entirely from groundwater wells located within the Prescott Active Management Area aquifer system.

·       The city operates seven production wells

·       Water is drawn from the Lower Volcanic Unit aquifer

·       Water is treated and distributed through a large municipal system

·       The system currently serves more than 26,000 service connections

·       Sources: City of Prescott Consumer Confidence Report (Water Quality Report) & Prescott Water Resource Management Overview

Extensive Water Quality Testing

·       53 total coliform bacteria tests every month

·       Monthly arsenic monitoring from production wells

·       Testing for more than 100 water quality indicators across the system

·       These tests ensure Prescott’s drinking water remains safe for residents.

·       Sources: City of Prescott Consumer Confidence Report & EPA Drinking Water Regulations

Water Treatment and Safety Measures

·       Disinfection using chlorine to prevent bacteria

·       Blending water sources to maintain low arsenic levels

·       Advanced filtration where necessary to remove contaminants

·       Sources: City of Prescott Consumer Confidence Report & EPA Drinking Water Regulations

System Capacity and Infrastructure

·       569 miles of pipeline

·       37 booster pump stations

·       26 water storage tanks

·       Average demand of about 6.4 million gallons per day

·       Sources: City of Prescott Utilities Department & City of Prescott Consumer Confidence Report

Water Quality Results

·       Contaminant levels remain within regulatory limits

·       Monitoring requirements are consistently maintained

·       Water delivered to residents is safe for consumption

·       Sources: EPA Safe Drinking Water Act Overview & City of Prescott Consumer Confidence Report

What This Means for Prescott Residents

·       Uses high-quality groundwater sources

·       Is extensively tested and monitored

·       Meets all required drinking water safety standards

·       Maintains modern infrastructure to deliver safe water citywide

Transparency and regular testing help ensure Prescott residents can remain confident in the safety of their drinking water.