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Water Operations        Backflow Prevention

Backflow Prevention

Keep Pollution & Contamination out of City Water

Backflow Prevention devices help to protect the City water system from pollution and contamination by providing a layer of protection at connection points to private water lines. The Prescott City Code Title II, Section 2-1-55 grants legal authority for the Cross Connection Control Program, with the adoption of the International Plumbing Code; City Code Title III, Chapter 6, Section 608, in compliance with Arizona Administrative Code R18-4-215.

Why is Water Protection so important? The City of Prescott is responsible for providing high quality, safe drinking water to all its customers. Backflow into a public water system can pollute or contaminate the water in that system (i.e., backflow into a public water system can make the water in that system unusable or unsafe to drink). In order to keep your water safe from contaminants, the City of Prescott puts measures in place to prevent unwanted water from entering the distribution system. 

Discover the causes of various types of backflow with the detailed overview found below

  • Backflow Conditions

Backflow Prevention Assembly Diagrams

  • Backflow Prevention Assembly Installation 3" and Under (324Q-1)
  • Backflow Prevention Assembly Installation 4" and Larger (324Q-2)

Does my backflow preventor need to be tested?

Yes, all backflow prevention assemblies are required to be tested upon installation and annually thereafter by an approved Backflow Prevention Assembly tester from the City’s List of Approved Testers. The following types of service connections shall require backflow prevention to be installed: commercial meters, master metered systems, irrigation meters, multifamily residential meters, and fire protection connections. Initial certification testing is required upon establishment or restoration of water service to the meter. A certified backflow prevention device tester, approved by the Public Works Department, shall make all testing, maintenance, and repairs to the backflow prevention assembly at the water service customer’s expense. The initial testing and the required annual testing are the responsibility of the water service customer. Test reports shall be forwarded to the City’s Water Protection Office at 1505 Sundog Ranch Rd or emailed to backflow@prescott-az.gov.

  • Certified Backflow Testers

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    Prescott, AZ 86301
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