What matters here
Tempe explicitly says fire lines should be protected with a double check assembly located outside or inside the fire riser room.
Fire line
City of Tempe Backflow Prevention Program fire line backflow rules
Tempe explicitly says fire lines should be protected with a double check assembly located outside or inside the fire riser room.
Utility: City of Tempe Backflow Prevention Program
Last verified: 2026-04-05
Due basis: Tempe uses annual anniversary-date testing by a City-registered certified tester, sends reminders before the due date, and can escalate unresolved noncompliance to termination of water service.
Highlights
- Fire lines are called out directly on the program page.
- Tempe treats fire-line protection separately from ordinary PVB irrigation use.
- Registered tester routing still applies.
Workflow
Workflow
- Confirm the fire line assembly type Tempe expects.
- Use a Tempe-registered tester who can handle fire-line assemblies.
- Keep the annual fire-line record current so enforcement does not escalate.
Residential
- Tempe is useful for residential intent when irrigation, fire sprinklers, or another hazard brings the property into the containment program.
- Users are responsible for maintaining three years of testing and repair records.
Commercial and managed properties
- Commercial and multifamily intent is strong because Tempe publishes both tester registration rules and real notice timing.
- Fire lines are clearly treated differently from ordinary 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 Tempe Backflow Prevention Program require annual backflow testing?
At installation and annually on the anniversary date. Tempe uses annual anniversary-date testing by a City-registered certified tester, sends reminders before the due date, and can escalate unresolved noncompliance to termination of water service.
Who is affected by City of Tempe Backflow Prevention Program backflow rules?
Tempe customers with contained cross-connection hazards, including irrigation, fire-line, multifamily, commercial, and other assemblies tracked by the Water Utilities Division.
How do I submit or confirm a backflow test for City of Tempe Backflow Prevention Program?
Use the official utility workflow and submission methods listed on this page: Tempe backflow prevention program, Tempe registered testing companies list. Program phone: 480-350-2678.
Where should I look for testers for City of Tempe 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
Tempe backflow prevention program
Tempe explicitly says fire lines should be protected with a double check assembly located outside or inside the fire riser room.
official program page
Tempe registered testing companies list
Tempe explicitly says fire lines should be protected with a double check assembly located outside or inside the fire riser room.
official tester list pdf