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Phoenix fire-line backflow testing

Phoenix explicitly separates downstream testing of fire-line backflow devices by assigning that responsibility to the Phoenix Fire Department.

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City: Phoenix Utility: City of Phoenix Backflow Prevention Program Cadence: Upon installation and annually thereafter Last verified: 2026-06-29
Local answer

What to check for Phoenix

Phoenix explicitly separates downstream testing of fire-line backflow devices by assigning that responsibility to the Phoenix Fire Department.

  • 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.
  • Who is affected: Commercial, industrial, irrigation, and fire-line services plus any residential or multifamily property where Phoenix determines that a cross-connection hazard exists.
  • Program phone: 602-534-2140
Local signals

Signals that matter before you act

  • 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

Phoenix workflow order

  1. Confirm whether the assembly is serving a fire line or downstream fire protection equipment.
  2. Coordinate the testing path with the Phoenix Fire Department requirements.
  3. Keep the utility-side report and the fire-side requirement aligned so the record does not stall.