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Backflow Testing Services in Torrance, California

Finding a reliable backflow testing professional in Torrance, California is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 17 backflow testing companies serving Torrance and surrounding communities including Redondo Beach, Carson, Lawndale.

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 Torrance 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 Torrance 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.

17 listed providers

Services:
A-A Backflow Testing and Maintenance backflow testing
Testing Verified
2 mi

A-A Backflow Testing and Maintenance

3.0(5)

Testing Verified · Torrance, CA · 2 mi

Backflow TestingCross-Connection Control
Website
Ferrari Backflow Inc. backflow testing
Testing Verified
2 mi

Ferrari Backflow Inc.

3.0(2)

Testing Verified · Redondo Beach, CA · 2 mi

Backflow TestingPreventer InstallationCross-Connection Control
Website
BAVCO - Backflow Repair Parts & Backflow Supply backflow testing
8 mi

BAVCO - Backflow Repair Parts & Backflow Supply

4.7(26)

Long Beach, CA · 8 mi

Preventer RepairSame-Day Service

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 Google
Website
Mr Fix It Plumbing backflow testing
Testing Verified
9 mi

Mr Fix It Plumbing

No reviews yet

Testing Verified · Long Beach, CA · 9 mi

Backflow TestingCommercial
Website
Atlas Backflow Services - Backflow Testing Los Angeles + Orange County backflow testing
Testing Verified
10 mi

Atlas Backflow Services - Backflow Testing Los Angeles + Orange County

4.9(83)

Testing Verified · Signal Hill, CA · 10 mi

Backflow TestingPreventer RepairCross-Connection Control
Website
Advance Mechanical Contractors backflow testing
Testing Verified
10 mi

Advance Mechanical Contractors

No reviews yet

Testing Verified · Signal Hill, CA · 10 mi

Backflow TestingCommercialResidential
Website
CY
Testing Verified
10 mi

Cover Your Brass - Backflow Testing and Backflow Cage Manufacturer

4.8(9)

Testing Verified · Signal Hill, CA · 10 mi

Backflow TestingPreventer InstallationPreventer Repair

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
Website
Sunset Plumbing backflow testing
Testing Verified
10 mi

Sunset Plumbing

No reviews yet

Testing Verified · Long Beach, CA · 10 mi

Backflow TestingCommercial
Website
J & D Plumbing & Heating Contractors backflow testing
10 mi

J & D Plumbing & Heating Contractors

No reviews yet

Long Beach, CA · 10 mi

CommercialResidentialEmergency Service
Website
Roto-Rooter Plumbing & Water Cleanup backflow testing
11 mi

Roto-Rooter Plumbing & Water Cleanup

No reviews yet

Long Beach, CA · 11 mi

CommercialResidentialEmergency Service
Website
Mr. Rooter Plumbing of Long Beach backflow testing
11 mi

Mr. Rooter Plumbing of Long Beach

No reviews yet

Long Beach, CA · 11 mi

Emergency Service
Website
Prodigy Plumbing | Long Beach Plumber backflow testing
Testing Verified
11 mi

Prodigy Plumbing | Long Beach Plumber

4.8(946)

Testing Verified · Long Beach, CA · 11 mi

Backflow TestingCommercialEmergency Service
Website
Pete's Plumbing backflow testing
Testing Verified
11 mi

Pete's Plumbing

No reviews yet

Testing Verified · Signal Hill, CA · 11 mi

Backflow TestingEmergency ServiceSame Day Service
Website
A-1 Performance Rooter & Plumbing backflow testing
Testing Verified
11 mi

A-1 Performance Rooter & Plumbing

No reviews yet

Testing Verified · Long Beach, CA · 11 mi

Emergency Service
Website
American Drain Works and Plumbing Company backflow testing
12 mi

American Drain Works and Plumbing Company

5.0(45)

Los Angeles, CA · 12 mi

Commercial
Website
USC Foundation for Cross-Connection Control and Hydraulic Research backflow testing
15 mi

USC Foundation for Cross-Connection Control and Hydraulic Research

5.0(2)

Los Angeles, CA · 15 mi

Backflow TestingCross-Connection Control
Website
Plumbquest Plumbing & Backflow testing backflow testing
17 mi

Plumbquest Plumbing & Backflow testing

No reviews yet

Los Angeles, CA · 17 mi

CommercialEmergency ServiceFree Estimates
Website

Frequently Asked Questions About Backflow Testing in Torrance

Backflow testing in Torrance, 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 Torrance 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 Torrance 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 Torrance 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 Torrance 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.

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