Backflow Testing Services in Riverside, California
Finding a reliable backflow testing professional in Riverside, California is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 25 backflow testing companies serving Riverside and surrounding communities including Rubidoux, Norco, Moreno Valley.
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 Riverside area.
Most water authorities in California 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 Riverside 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.
25 listed providers
Roto-Rooter Plumbing & Water Cleanup
No reviews yet
Riverside, CA · < 1 mi

Jim & Sons Plumbing & Rooter
Testing Verified · Riverside, CA · 4 mi
Campbell Family Plumbing & Electric
Riverside, CA · 5 mi

E.R. Block Plumbing Inc.
No reviews yet
Riverside, CA · 6 mi

LeBlanc Backflow Service
No reviews yet
Testing Verified · Moreno Valley, CA · 6 mi

Southern California Backflow
Testing Verified · Riverside, CA · 7 mi
Dependable Plumber Inc
No reviews yet
Moreno Valley, CA · 8 mi

Mr. Rooter Plumbing of San Bernardino
Colton, CA · 9 mi
“Our 20+ year old water heater died on us and had to be immediately replaced. I contacted at least 7 plumbing companies and Mr. Rooter was the only one who had same day availability. Also, the rep…”
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Amazing Force Plumbing & Backflow LLC
Corona, CA · 9 mi
“Where do I begin......... Amazing Force Plumbing has provided excellent service for my rental properties as well as my home for the last several years. Kenneth is the owner and he takes pride in…”
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Big Mike's Rooter & Plumbing Company, Inc.
San Bernardino, CA · 12 mi
“I was told it was going to cost approximately $1000 to replace the shower valve. Big Mike’s came out and found that when the previous plumber changed the stems, he did not replace the seats in the…”
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Mr. Rooter Plumbing of The Inland Empire
Fontana, CA · 14 mi
“I recently had a shower valve body replacement done by Hector from Mr. Rooter, and the experience was outstanding. The original valve was seized, and a simple cartridge replacement wasn’t possible…”
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All City Plumbing, Air & Electrical
No reviews yet
Rancho Cucamonga, CA · 14 mi

Ballard Plumbing Heating & Air Conditioning
San Bernardino, CA · 14 mi
“I like Brent he’s funny easy going I felt comfortable with him. He didn’t make me feel pressured into signing anything. If I didn’t understand something he explained it very well. I met Jose he took…”
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Basic Backflow
Testing Verified · San Bernardino, CA · 16 mi

Sentry Backflow and Utility Theft Prevention by D&M
Lake Elsinore, CA · 19 mi

Cal Valve – Backflow Supply
Testing Verified · Lake Elsinore, CA · 19 mi
“Recently took Ron’s 1 week backflow crash course and found it to be excellent! The information presented to the class was easy to understand and take in. Most in the class weren’t even in the water…”
Read more on GoogleFullerton Backflow
No reviews yet
Testing Verified · Lake Elsinore, CA · 19 mi
Helpful resources
Frequently Asked Questions About Backflow Testing in Riverside
Many certified backflow testers in Riverside will file test reports directly with your local water authority or municipality on your behalf. Confirm this with your provider before scheduling. Some jurisdictions require the property owner to submit reports, while others accept direct submissions from the tester.
Backflow testing in Riverside, California typically costs between $50 and $200 per device, depending on the type of backflow preventer and the complexity of the installation. RPZ assemblies generally cost more to test than double check valve assemblies. Contact providers listed above for current pricing in the Riverside area.
If a backflow preventer fails its annual test, the certified tester will diagnose the issue — often a worn check valve, damaged disc, or fouled relief valve. Most testers in Riverside can repair the device on site and re-test it the same day. Your water authority may require the passing report within a set deadline.
Cross-connection control prevents contaminated water from flowing backwards into the clean water supply. Backflow prevention devices are installed at cross-connection points to protect public health. Regular testing ensures these devices function properly. Many municipalities in California require cross-connection control programs for commercial properties and irrigation systems.
Many municipalities in California require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Riverside can confirm the exact testing schedule and deadlines for your area. Failing to test on time may result in fines or water service interruption.
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