Glendale requires every backflow device to be tested and serviced at least once a year by a tester the city certifies. If it fails, the customer repairs or replaces it. The customer keeps records on city forms and sends a copy to the city promptly. A missing, untested or bypassed device can lead to a water shutoff after two notices.
“The Customer shall test and service backflow prevention devices at least once a year.”
- Applies to:
- Owners and account holders of any property with a backflow device on a Glendale water service; certified testers
- Official fee:
- none in this section
- In force:
- Glendale City Code Ch. 33, Art. II, Div. 5 (Ord. 3003, 2016)
- Last verified:
- September 29, 2026, against the official page
The test is a once-a-year job, and the shutoff clock only starts after the city mails you a notice. The catch is what counts as "tested": a certified tester's report, on the city's forms, in the city's hands. A test that happened but never got filed is treated the same as one that never happened.
What does Glendale City Code 33-94 say?
Section 33-94(a) says "The Customer shall test and service backflow prevention devices at least once a year." If the test shows the device is defective, the customer does whatever repair is needed to return it to satisfactory condition, including replacement or overhaul. The four subsections break down like this:
- (a) Yearly test and repair: at least once a year, with repairs after a failed test.
- (b) Between tests: if the city or the customer finds a defective device mid-year, the customer repairs it then. The code gives no fixed number of days.
- (c) Who tests: an individual "certified and approved to conduct such testing by the City," from a list the city keeps and gives out on request.
- (d) Records: results of all tests, servicing, repairs, overhauls and replacements are kept on forms the city approves, and a copy goes to the city promptly after each activity.
Section 33-96 is the enforcement side. If the city finds a required device is missing, was improperly tested or maintained, was bypassed or removed, or that an unprotected cross-connection exists, the water service "shall be disconnected" and "shall not be restored until the condition is remedied." Before that happens the city mails a notice giving 45 days to fix it, then a second certified-mail notice giving 15 more days. If the customer's water is contaminating the public supply, the city can disconnect without notice. Water service to a fire sprinkler system is not disconnected under this section, but ignoring the notice can lead to a misdemeanor citation, with each day a separate violation.
What do the key terms mean?
- Customer: the person who asked for and received water service. That is the account holder, which may be the tenant rather than the owner.
- Test and service: the code uses both words. A pass needs a certified tester's test. Servicing means the maintenance and repairs that keep the device working.
- Certified and approved: a tester on the city's list. The city's Backflow Tester Policy says testers renew their certification every three years and calibrate test gauges annually.
Who does this cover?
Every customer with a backflow device on a Glendale water service, new or existing. It does not cover a property with no required device. It also does not put the duty on the tester: the customer is responsible, though testers who submit incomplete or false reports face suspension from the city's list.
Quick check: where does your device stand?
| Situation | Outcome | Why |
|---|---|---|
| Tested by a listed tester 11 months ago, report filed | Compliant | Yearly test met, records on file |
| Test done but no copy sent to city | Not compliant | 33-94(d) requires prompt submission |
| Tester not on the city list | Not accepted | Testing must be by a city-approved individual |
| Device fails, you repair it | Compliant after repair | Repair is the customer's duty |
| Device found leaking mid-year | Repair now | 33-94(b) applies between tests |
| Device removed or bypassed | Shutoff risk | 33-96(a)(ii) |
| City notice mailed 20 days ago | 25 days left | 45 day period, then a 15 day notice |
What does this look like in real life?
A restaurant that skipped the paperwork. The owner paid a tester in March, but the tester never uploaded the report. The city's system shows no test on file, so the owner gets a notice. The fix is asking the tester to submit it. The city's Backflow Tester Policy says reports are submitted online through the city's tester portal.
A tenant who never knew. A tenant holds the water account for a small shop. The notice goes to them, and the 45 days start on mailing. The customer is the responsible party, so the tenant needs the lease and the landlord involved fast.
The edge case: a fire line. A fire-only service is not disconnected under 33-96(b). The device still needs its yearly test, and an unremedied condition can bring a misdemeanor citation instead.
What should you do next?
- 1Find your last test date on the report. If it is older than a year, book a test now.
- 2Pick a tester from the city's certified list (Cross Connection Control, 623-930-4138, backflow@glendaleaz.com).
- 3Have the tester complete the city's report form and submit it, with the correct water meter number and device serial number. Incomplete reports are sent back.
- 4If the device fails, repair or replace it. A replacement needs a backflow installation permit, then an inspection through the permit line at 623-915-3263 (code 237 domestic, 238 fire line, 245 hydrant meter, 246 irrigation).
- 5If a notice arrives, count 45 days from the mailing date and act before the certified notice starts the final 15.
- 6Keep your own copy of each report with your maintenance records.
What do people get wrong?
- "The tester files it, so I am covered." The code puts the duty on the customer, so confirm the city received the report.
- "Replacing a failed device is just a repair." Glendale's tester policy requires a permit for replacements as well as new installs.
- "They will shut me off tomorrow." The code requires a 45 day notice and then a 15 day certified notice, except when contamination is found.
- "A fire line is exempt." It is exempt from disconnection, not from testing.
Full text and source
The rules are Glendale City Code Secs. 33-94 and 33-96 on Municode. The notice periods above come straight from Sec. 33-96 and are paraphrased here. The code text is the final word.
How Do Other Valley Cities Handle It?
| Where | What applies | Source |
|---|---|---|
| Mesa | Test at least yearly before the compliance date, repair by that date, retest within 24 hours after any repair, and submit the record within 7 calendar days. | Mesa City Code 8-1-11 Verified September 29, 2026 |
| Scottsdale | Test at least once a year after a city notice, repair within 45 days of the notice, and submit records within 7 days. | Scottsdale Revised Code 49-65(b) and (e) Verified September 29, 2026 |
| Tempe | Test at least once a year on the anniversary of the first inspection and give the city 15 days' notice so it can witness the test. | Tempe City Code 33-107(b) and (c) Verified September 29, 2026 |
This page explains the rule. The official text at the source above governs.
- Glendale City Code Sec. 33-94, Test, maintenance and records (Municode)
- Glendale City Code Sec. 33-96, Discontinuance of water service; notice (Municode)
- Glendale Backflow Tester Policy, January 2025 (Water Services)
- Mesa City Code 8-1-11, annual testing and records (Municode)
- Scottsdale Revised Code Sec. 49-65 (Municode)
- Tempe City Code 33-107 (Municode)
Backflow Prevention in Other Cities
- ChandlerChandler City Code 52-36: backflow assemblies on commercial building plans
- GilbertGilbert Town Code 10-92(c): which backflow assembly does your kind of property need?
- MesaMesa City Code 8-1-10: backflow rules for fire sprinkler systems
- MesaMesa City Code 8-1-11: annual backflow testing, repair deadlines and who can test
- MesaWho can test backflow assemblies in Mesa? City Code 8-1-12 recognized testers
- MesaCan Mesa shut off your water for backflow violations? City Code 8-1-13
More Glendale Codes and Permits
- Backflow PreventionGlendale City Code 33-90: which businesses need a backflow device
- Backflow PreventionGlendale City Code 33-92: backflow devices on fire sprinkler services
- Backflow PreventionGlendale City Code 33-99: backflow devices must be on your building plans
- Permits and InspectionsWhat plumbing and gas code does Glendale use?
- Sewer LinesGlendale City Code 33-217: who repairs the sewer line from the building to the street
- Commercial PlumbingGlendale City Code 33-238: grease interceptors must be pumped every 180 days
Related Rules and Questions
- ArizonaArizona Administrative Code R18-4-215: Backflow Prevention and Annual Testing
- UPCUPC Section 603: Cross-Connection Control and Backflow Protection
- FAQHow often does a commercial backflow preventer need testing in Arizona?
- FAQDo I have to register my backflow assembly with the City of Phoenix?
- FAQWhat is backflow in plumbing?
- Commercial Plumbing
