Backflow Testing Services in Florence-Graham, California
Finding a reliable backflow testing professional in Florence-Graham, California is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 24 backflow testing companies serving Florence-Graham and surrounding communities including Huntington Park, South Gate, Lynwood.
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 Florence-Graham 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 Florence-Graham 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.
24 listed providers

USC Foundation for Cross-Connection Control and Hydraulic Research
Los Angeles, CA · 5 mi

BAVCO - Backflow Repair Parts & Backflow Supply
Long Beach, CA · 9 mi
“I ordered the parts for my PVB backflow preventer and it seem like I just got off the Internet and the parts were at my door it was fast!!!!! Customer service was very good, trust me, I would’ve gave…”
Read more on GooglePlumbquest Plumbing & Backflow testing
No reviews yet
Los Angeles, CA · 9 mi


Ferrari Backflow Inc.
Testing Verified · Redondo Beach, CA · 10 mi

A-1 Performance Rooter & Plumbing
No reviews yet
Testing Verified · Long Beach, CA · 11 mi
Cover Your Brass - Backflow Testing and Backflow Cage Manufacturer
Testing Verified · Signal Hill, CA · 12 mi
“Our plumbing company in Orange County Ca needed backflow anti theft cages asap for our customers who had their backflow assemblies stolen. Bill the owner came through for us! The products we…”
Read more on Google
A-A Backflow Testing and Maintenance
Testing Verified · Torrance, CA · 12 mi
Atlas Backflow Services - Backflow Testing Los Angeles + Orange County
Testing Verified · Signal Hill, CA · 12 mi

Advance Mechanical Contractors
No reviews yet
Testing Verified · Signal Hill, CA · 12 mi

Prodigy Plumbing | Long Beach Plumber
Testing Verified · Long Beach, CA · 12 mi
H. L. Moe Co., Inc
Testing Verified · Glendale, CA · 13 mi

J & D Plumbing & Heating Contractors
No reviews yet
Long Beach, CA · 13 mi

Pete's Plumbing
No reviews yet
Testing Verified · Signal Hill, CA · 13 mi
Roto-Rooter Plumbing & Water Cleanup
No reviews yet
Long Beach, CA · 14 mi

Valley Backflow
Testing Verified · Burbank, CA · 15 mi
“Called a handful of companies and they were the most responsive at the best price. Service was great and I would use again!”
Read more on Google
Los Angeles Plumbing & Backflow
Testing Verified · Irwindale, CA · 16 mi

Precision Backflow Testing & Repairs
Testing Verified · La Cañada Flintridge, CA · 17 mi
“Had a great experience with Precision Backflow! I called for information as we were looking for a new backflow testing company-we had a few bad experiences with the company we’d been using. I talked…”
Read more on Google
Prevent Backflow & Plumbing Inc.
No reviews yet
Testing Verified · Anaheim, CA · 20 mi
Helpful resources
Frequently Asked Questions About Backflow Testing in Florence-Graham
Many municipalities in California require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Florence-Graham 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 Florence-Graham 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 Florence-Graham 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 California 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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