Backflow Testing in Glendale: Permits, Testers, Reports
Backflow preventer testing in Glendale follows City Code Chapter 33: a city notice, a recognized tester, an online report, and a permit for any replacement.
Irrigation Guides5 min read
Glendale City Code Chapter 33 requires an approved backflow device at every water service connection, and the city's Cross Connection Control program manages testing. Tests are filed by testers on the city's recognized list, and replacing an assembly needs a city permit and an inspection.
The backflow assembly is the brass device where your irrigation line leaves the drinking water supply. It is the one part of a home irrigation system the city regulates directly. This guide explains, in plain steps, what the City of Glendale requires, who may test, and what happens when an assembly fails.
Are backflow preventers required in Glendale?
Yes. Glendale City Code Chapter 33 requires the installation, testing and maintenance of approved backflow prevention devices at every service connection. The City of Glendale's Cross Connection Control program, part of Water Services, runs the testing program and keeps the list of testers whose reports it accepts.
The City of Glendale Water Services page states the rule and that commercial customers must have their assemblies inspected every year. It does not publish a separate residential interval on that page, so a homeowner should follow the notice the city sends.
What does a backflow preventer do?
A backflow preventer stops water from flowing backwards out of your irrigation pipes into the public supply. Irrigation water sits in buried pipe, touches soil and fertilizer, and can be pulled back if supply pressure drops. The assembly keeps that water out of everyone's drinking water.
That is why the water provider, not the homeowner, sets the rules. On most irrigation systems the device is a pressure vacuum breaker or a similar assembly mounted above ground near the house.
How a Glendale backflow test works
The City of Glendale's backflow tester policy sets out the process from the tester's side. For a homeowner it looks like this:
- The notice. The policy tells testers to get a copy of the owner's notification letter before testing, so the city's letter is usually where it starts.
- A recognized tester. The city accepts reports only from testers on its List of Recognized Testers. Testers must recertify every three years and keep their gauge calibration current, or they come off the list.
- The test. The tester checks the assembly on site. In Glendale every pressure vacuum breaker is also tested for backpressure, a city-specific step.
- The report. The tester files the report online by the end of the month it is due. Reports missing details, such as the meter number or the assembly serial number, are sent back for correction.
Keep a copy of every report for your own records.
Can I do my own backflow test?
No, not for the city's records. Glendale accepts test reports only from certified testers on its List of Recognized Testers, filed through the city's online system. A homeowner can watch the assembly for leaks between tests, but the test itself and the report belong to a recognized tester.
The policy also lists penalties for testers who file incomplete or inaccurate reports, which is one reason the city controls who may test.
Do you need a permit for a backflow preventer in Glendale?
Yes, for any installation or replacement. Glendale requires a backflow permit for every new installation, including retrofits and replacements of existing assemblies, from the Development Services Center on Glendale Avenue. After installation, the irrigation-line assembly is inspected under its own permit code.
The tester policy adds that the city will not accept a backflow report on a new or replaced assembly without a permit and an inspection of the assembly and its underground piping. Skipping the permit means the test report does not count. Because a permit is required, Arizona's small-job licence exemption does not apply either: ARS 32-1121 removes that exemption wherever a local building permit is needed.
Is backflow testing plumbing work?
It is regulated water-supply work, whatever the trade label. The Arizona Registrar of Contractors lists backflow prevention devices within the scope of its Hardscaping and Irrigation Systems licence class, and other classes can cover them too. What matters in Glendale is the city's recognized-tester list and a licence that fits the job.
The Registrar's licence classifications describe each class. Ask any tester or contractor for their licence number and check it in the Registrar's public search before work starts. Our guide on how to choose an irrigation contractor in Glendale covers that check.
Signs your assembly needs attention between tests
- water dripping or spraying from the assembly, especially from the relief port or air inlet;
- a cracked body or bonnet after a cold night;
- a missing or broken test-cock cap;
- the sprinkler system losing pressure on every zone at once.
University of Arizona Cooperative Extension puts the average first frost across the Phoenix area between late November and mid-December, so an exposed assembly is worth covering before then. Do not take an assembly apart yourself. If it leaks at the brass device near the house rather than at a zone valve in the yard, it is a backflow job; our sprinkler valve signs guide helps tell the two apart.
Who these rules cover
The Chapter 33 rules apply to City of Glendale water customers. The city's General Plan notes unincorporated county islands between 75th Avenue and El Mirage Road, where a Glendale mailing address may come with a different water provider and different rules. Check the name on your water bill first.
For local service, see backflow testing in Glendale. If you are adding a new system, the backflow permit is part of irrigation system installation in Glendale. The general backflow preventer testing page explains the device in more depth.
FAQ
How often does a backflow preventer need testing in Glendale?
- The City of Glendale says commercial customers must have assemblies inspected every year. Its Water Services page does not publish a separate residential interval, so follow the notification letter the city sends. Testers are advised to get that letter before they test.
Who can test my backflow preventer in Glendale?
- Only a certified tester on the City of Glendale's List of Recognized Testers. Testers recertify every three years and must keep their gauge calibration current. They file the test report through the city's online system by the end of the month it is due.
Do I need a permit to replace a backflow preventer in Glendale?
- Yes. Glendale requires a backflow permit for every installation, retrofit and replacement, followed by an inspection of the assembly and its underground piping. The city will not accept a test report on a new or replaced assembly without that permit and inspection.
What happens if my backflow assembly fails the test?
- A failed test usually means the assembly needs new parts or a full replacement. A rebuild with new internal parts is followed by a retest. A replacement needs a Glendale backflow permit and an inspection before the city will accept the new test report.
Does every Glendale address follow these backflow rules?
- Not every one. The rules apply to City of Glendale water customers. Unincorporated county islands sit between 75th Avenue and El Mirage Road, and a Glendale mailing address there may have another water provider. Check the name on your water bill.
Sources
- City of Glendale Water Services page glendaleaz.gov
- backflow tester policy glendaleaz.gov
- ARS 32-1121 azleg.gov
- Registrar's licence classifications roc.az.gov