Backflow Testing Services in Phoenix, Arizona
Finding a reliable backflow testing professional in Phoenix, Arizona is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 99 backflow testing companies serving Phoenix and surrounding communities including Tempe Junction, Glendale, Tempe.
Whether you need annual backflow testing, RPZ (Reduced Pressure Zone) valve inspection, or cross-connection control services, the providers listed below offer professional testing services for both residential and commercial properties throughout the Phoenix area.
Most water authorities in Arizona require annual testing and reporting for all backflow prevention assemblies. A certified backflow tester will inspect your devices, perform the required differential pressure tests, and file compliance reports with your local water authority.
Browse the listings below to compare ratings, read customer reviews, and contact backflow testing professionals near Phoenix directly. Use the filters above to narrow results by rating, review count, or specific services like RPZ testing and preventer installation.
Data source: Google Maps. Always verify licensing with your local water authority.
99 listed providers

Diamondback Plumbing
Testing Verified · Phoenix, AZ · 14 mi

Mr. Rooter Plumbing of Phoenix Arizona
Mesa, AZ · 14 mi
The Plumber Guy
Peoria, AZ · 15 mi
“I had an emergency plumbing situation shortly after purchasing my condo, and I can’t say enough good things about the entire team. Roxy was calm, professional, and incredibly helpful in coordinating…”
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Phoenix Water Softeners
Chandler, AZ · 15 mi
“I am incredibly satisfied with the water softening equipment I purchased. The system works flawlessly, significantly improving the water quality in my home. Installation was straightforward, thanks…”
Read more on GoogleReddi Services
Testing Verified · Peoria, AZ · 15 mi
“We have used Reddi Services for HVAC and plumbing, since we bought our house back in 2018. Thanksgiving 2025, I went to put groceries in our garage freezer and found our hot water tank was leaking…”
Read more on GoogleRoto-Rooter Plumbing & Water Cleanup
Testing Verified · Chandler, AZ · 15 mi
“For my plumbing issue I was disappointed because my window was 10:39-12:39 and then I kept getting texts it would be later (good communication about being late). It was 4:15 before the plumber…”
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Allegiance Water Services
Scottsdale, AZ · 15 mi
“I was too hasty with the first review below where a gave them a 3 rating. I am revising this to a 5 because today they did follow through on their commitment to pick up the old brine. They needed a…”
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Mason Pro Services
Chandler, AZ · 15 mi
“Mitchell and Masons Pro Services have always provided an amazing professional experience. Mitchell has done 4 different plumbing jobs in my house. All jobs were completed with excellence. Last year I…”
Read more on GoogleFerguson Waterworks
Chandler, AZ · 16 mi
“We have a lot of work going on and with Ferguson as our supplier, they do an excellent job, at the counter as well. Especially Dallas, he is very professional and always making sure we have the right…”
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Rainwater Plumbing and HVAC
Testing Verified · Chandler, AZ · 16 mi
“I had a scary event at my home with a gas leak resulting in my gas been turned off. A plumber was recommended. A call was made to Rainwater Plumbing and Walter responded and within two hours he was…”
Read more on Google4 Peaks Fire Protection LLC
Testing Verified · Mesa, AZ · 16 mi
“I had a great experience with Tyler and 4 Peaks Fire. The city of Scottsdale required my to add a backflow prevention unit on my business. 4 Peaks was responsive, answered questions, and was inline…”
Read more on GoogleThe Plumbing Plug
Testing Verified · Chandler, AZ · 17 mi
“This guy l knows exactly what he is doing. I had a filter put in to my kitchen faucet and refrigerator. He had to drill a hole into my granite countertop, which is an entire island, and he did it…”
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Plumbers Near Me - Water Heater & Plumbing Services
Chandler, AZ · 17 mi
“Plumbers Near Me, LLC sent someone over this morning to swap out my old water heater. The new unit was installed in a couple of hours without any hassle. They replaced the faulty thermostat and made…”
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Beebe Plumbing
Testing Verified · Peoria, AZ · 17 mi
“Referred to me by another customer. Called them out for a for a major Gas Line install. They tapped into existing gas lines set for my furnace in order to connect a gas range, a second line for a gas…”
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Bleuwave Plumbing
Chandler, AZ · 20 mi
“Should have hired them in the first place. Things to know: - My house was built and designed by the first owner of my property. - I purchased a “whole house filtration system” and I needed my house…”
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Frequently Asked Questions About Backflow Testing in Phoenix
Many municipalities in Arizona require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Phoenix can confirm the exact testing schedule and deadlines for your area. Failing to test on time may result in fines or water service interruption.
Some certified testers near Phoenix offer same-day or emergency scheduling for urgent situations such as a failed device, a compliance deadline, or a new construction inspection. Check individual provider listings above for availability, or request a quote to find a tester who can accommodate your schedule.
Look for testers with active state certification, strong Google reviews, and experience with your type of backflow preventer (PVB, DCVA, or RPZ). Ask whether they file compliance reports with your local water authority and request a written estimate before scheduling. Our directory lists testers near Phoenix with real customer reviews.
RPZ (Reduced Pressure Zone) testing verifies that your reduced pressure backflow preventer is functioning correctly to protect your water supply from contamination. A certified tester uses specialized gauges to measure differential pressures across the assembly. RPZ devices are typically required for high-hazard connections.
Most jurisdictions in Arizona require backflow testers to hold a current certification from an approved training program, typically involving classroom instruction, a hands-on practical exam, and continuing education credits. Some municipalities maintain their own approved-tester lists. Always verify certification before hiring.
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