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Annual testing

City of Phoenix Backflow Prevention Program annual backflow testing

Phoenix requires city-listed certified testers to test assemblies on installation and annually thereafter, then send the approved report to the city by the due date on the work order.

Utility: City of Phoenix Backflow Prevention Program Last verified: 2026-04-04 Due basis: Phoenix requires certified testers on the city list to perform testing and repairs, and the approved report has to be forwarded to Planning and Development by the due date shown on the work order.
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Direct answer

What matters here

Phoenix requires city-listed certified testers to test assemblies on installation and annually thereafter, then send the approved report to the city by the due date on the work order.

Due basis: Phoenix requires certified testers on the city list to perform testing and repairs, and the approved report has to be forwarded to Planning and Development by the due date shown on the work order.

Highlights

Highlights

  • Testing and repairs must be done by a city-listed certified tester.
  • The test report must be on Phoenix's approved form.
  • Customers are expected to retain records for at least three years.
Workflow

Workflow

  1. Verify the assembly is active in Phoenix's program.
  2. Use a tester currently listed on the Phoenix approved company list.
  3. Submit the approved test form to Planning and Development by the work-order due date.
Residential

Residential

  • Phoenix can require backflow protection at residential sites when the city identifies a hazard rather than leaving the topic only to commercial properties.
  • Residential owners should not assume irrigation or special-use plumbing is exempt just because the service is domestic.
Commercial focus

Commercial and managed properties

  • Phoenix is documentation-heavy: the city list, approved report, and work-order due date all matter together.
  • Fire-line downstream testing is not handled the same way as domestic or irrigation assemblies.
FAQ

Local questions people actually ask

Does City of Phoenix Backflow Prevention Program require annual backflow testing?

Upon installation and annually thereafter. Phoenix requires certified testers on the city list to perform testing and repairs, and the approved report has to be forwarded to Planning and Development by the due date shown on the work order.

Who is affected by City of Phoenix Backflow Prevention Program backflow rules?

Commercial, industrial, irrigation, and fire-line services plus any residential or multifamily property where Phoenix determines that a cross-connection hazard exists.

How do I submit or confirm a backflow test for City of Phoenix Backflow Prevention Program?

Use the official utility workflow and submission methods listed on this page: Phoenix Backflow Prevention Program, Phoenix tester requirements, Phoenix assembly test report. Program phone: 602-534-2140.

Where should I look for testers for City of Phoenix Backflow Prevention Program?

Start with the governing authority's published tester list. This utility has an official approved-tester route and it should be treated as the primary source.

Official sources

Official sources

Phoenix Backflow Prevention Program Phoenix requires city-listed certified testers to test assemblies on installation and annually thereafter, then send the approved report to the city by the due date on the work order.
official program page
Phoenix Backflow Tester Requirements Phoenix requires city-listed certified testers to test assemblies on installation and annually thereafter, then send the approved report to the city by the due date on the work order.
official requirements pdf
Phoenix Backflow Test List Phoenix requires city-listed certified testers to test assemblies on installation and annually thereafter, then send the approved report to the city by the due date on the work order.
official tester list pdf