Phoenix, AZ
Backflow testing in Phoenix
Updated · Editorial team; not yet technically reviewed
Short answer
Phoenix requires every backflow prevention assembly to be tested at least once a year. Homes with a cross-connection, such as an irrigation system, need an assembly tested annually by a certified tester. After the city's reminder letter you have 60 days to get a passing test filed; otherwise the city delivers a 72-hour water disconnection notice.
What's different in Phoenix
The customer must test all backflow prevention assemblies at least once a year, and the Planning and Development Director may require more frequent testing. [1]
Residential properties with a cross-connection, such as a sprinkler system, need a backflow prevention assembly installed and tested annually by a certified tester. [2]
The assembly must pass a test within 60 days of the reminder letter; if no report is received, the city delivers a 72-hour notice of water service disconnection. The program is at 602-534-2140. [2]
The Phoenix timeline
| Step | Timing |
|---|---|
| Reminder letter arrives | Day 0 |
| Passing test filed | Within 60 days |
| No report | 72-hour disconnection notice |
Desert wear
Above-ground assemblies bake in the sun and scale up in hard water, so relief valves and checks fail more often. Shade covers and insulation help; a failed test usually means a rebuild kit. See backflow testing and Phoenix water line repair.
Common questions
Does Phoenix need the test report, or just the test?
The city must receive a passing test report within the 60-day window.
Does a Phoenix home sprinkler system need a backflow test?
Yes, a sprinkler system is a cross-connection requiring an annually tested assembly.
How long do I have after Phoenix's backflow reminder letter?
60 days to have a passing test filed.
What happens if I miss the Phoenix backflow deadline?
The city delivers a 72-hour notice of water service disconnection.
Who tests backflow assemblies in Phoenix?
A certified backflow tester.
What's the Phoenix Backflow Prevention Program number?
602-534-2140.
Can Phoenix require more frequent backflow tests?
Yes, the Planning and Development Director may require it.
Why do Phoenix backflow assemblies fail?
Heat and hard-water scale wear springs and seals on above-ground assemblies.
Which Phoenix code covers backflow testing?
City Code §37-143.
Do Phoenix businesses also need annual tests?
Yes; commercial and multifamily properties with assemblies are tested annually.
More plumbing help in Phoenix
- Water Line Repair in PhoenixWater line leaks in Phoenix: the city repairs the street side of the meter, the owner the rest, and city code makes customers pay for water lost past the meter.
- Sewer Line Repair in PhoenixPhoenix sewer lines: owners clean and repair the building connection to the public sewer, but the city fixes broken sections in the right-of-way for homes.
- Backflow Testing: the full guideWhat backflow is, which homes and businesses need backflow preventers, how annual backflow testing works, and what happens if a device fails.
- Plumbing in PhoenixLocal water, housing and climate conditions, and the calls Phoenix homes need most.
How other cities handle it
- Backflow testing in AustinAustin Water's backflow testing rules: who may test, the 5-day report deadline, online filing, and the irrigation rebates that pair with an upgrade.
- Backflow testing in San AntonioSAWS backflow testing rules for San Antonio: the June 30 annual deadline, the codes behind it, reminder notices, and what a 10-day notice means.
- Backflow testing in DenverDenver Water's backflow rules: annual testing, the May–September irrigation testing season, required device types, 30-day reminders, and where results go.
- Backflow testing in SeattleSeattle Public Utilities backflow testing rules: annual tests by your anniversary date, Washington-certified testers, reporting, and non-compliance charges.
- Backflow testing in PortlandPortland Water Bureau backflow rules: yearly testing by a state-certified tester, the spring timing it prefers, reminder letters with labels, and shutoff risk.
- Backflow testing in CharlotteCharlotte Water backflow rules: residential irrigation tested every 3 years, residential domestic yearly, approved testers, and RP assemblies on irrigation.
- Backflow testing in RaleighRaleigh Public Utilities backflow rules: residential irrigation tested by July 1 every three years, commercial yearly, owner-paid certified testing, and contacts.
- Backflow testing in TampaCity of Tampa Water Department backflow rules: residential tests every two years, commercial yearly, certified technicians, and the 7-day online reporting rule.
- Backflow testing in Salt Lake CitySalt Lake City Public Utilities backflow rules: tests within 10 days of installation and yearly after, which homes need protection, and secondary water.
- Backflow testing in Colorado SpringsColorado Springs Utilities backflow rules: who must test annually, the July 1 deadline, the $405 fine, licensed testers entering results, and single-family guidance.
- Backflow testing in Fort WorthFort Worth backflow rules: annual tests for commercial and health-hazard assemblies, a three-year cycle for low-hazard irrigation, and registered testers.
- Backflow testing for JEA customers in JacksonvilleJEA residential backflow rules: testing at least every two years by JEA Qualified Vendors, dual checks replaced every five years, and reclaimed-water irrigation.
- Backflow testing in Fort LauderdaleFort Lauderdale backflow rules: residential irrigation tested every two years, commercial yearly, only PVB or RP devices on irrigation meters, and certified testers.
- Backflow testing in DallasDallas backflow rules: lawn irrigation assemblies don't need annual tests, only when new, repaired or replaced; high-hazard assemblies need annual registered tests.
- Backflow testing in HoustonHouston backflow testing: testing companies must register with the city, testers need TCEQ licenses, and gauges need annual calibration reports filed with Houston.
- Backflow testing in PhiladelphiaPWD backflow rules: test at installation, after any repair and yearly by a City-certified technician, file Form 79-770 within 48 hours.
Sources (2)
- Phoenix City Code §37-143 · checked 2026-10-03
- City of Phoenix, Backflow Prevention Program · checked 2026-10-03