City of Phoenix Backflow Requirements Explained Simply

The Rule in Plain English

The City of Phoenix's cross-connection control program requires every backflow prevention assembly to be tested at least once every 12 months by a certified tester. The test report must be submitted to the city within 10 days of the test date.

Who has to test?

• Homeowners with an irrigation/sprinkler system (that's most of Phoenix)
• Pool owners with auto-fill lines connected to potable water
• Businesses — restaurants, offices, HOAs, apartment complexes
• Properties with fire suppression systems

Who is allowed to test?

Only a tester certified to ASSE 5000 standards (or equivalent recognized by the city) using a calibrated gauge. Your landscaper can't legally do it. Your handyman can't legally do it. We can — every one of our testers is ASSE-certified.

What happens if you skip it?

• The city sends a compliance notice with a deadline.
• Miss the deadline and you face fines and potential water-service action.
• For businesses, non-compliance can affect permits and inspections.

New to Phoenix?

If you just bought a home with a sprinkler system, check whether the previous owner kept up with testing — the obligation transfers with the property. Not sure? Ask us and we'll help you check.