What matters here
Phoenix explicitly separates downstream testing of fire-line backflow devices by assigning that responsibility to the Phoenix Fire Department.
Fire line
City of Phoenix Backflow Prevention Program fire line backflow rules
Phoenix explicitly separates downstream testing of fire-line backflow devices by assigning that responsibility to the Phoenix Fire Department.
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.
Highlights
- Fire-line downstream testing is carved out from the standard utility workflow.
- Fire protection work is governed together with the city's backflow and fire-prevention teams.
- Do not treat fire-line testing as identical to ordinary domestic or irrigation testing.
Workflow
Workflow
- Confirm whether the assembly is serving a fire line or downstream fire protection equipment.
- Coordinate the testing path with the Phoenix Fire Department requirements.
- Keep the utility-side report and the fire-side requirement aligned so the record does not stall.
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 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.
Tester routing
Use the governing authority's official tester list first, then only treat any sponsor placement as secondary routing.
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
Phoenix Backflow Prevention Program
Phoenix explicitly separates downstream testing of fire-line backflow devices by assigning that responsibility to the Phoenix Fire Department.
official program page
Phoenix Backflow Tester Requirements
Phoenix explicitly separates downstream testing of fire-line backflow devices by assigning that responsibility to the Phoenix Fire Department.
official requirements pdf
Phoenix Backflow Test List
Phoenix explicitly separates downstream testing of fire-line backflow devices by assigning that responsibility to the Phoenix Fire Department.
official tester list pdf