FBT

Backflow Testing Services in Colton, California

Finding a reliable backflow testing professional in Colton, California is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 22 backflow testing companies serving Colton and surrounding communities including San Bernardino, Rialto, Fontana.

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 Colton 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 Colton 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.

22 listed providers

Services:
Mr. Rooter Plumbing of San Bernardino backflow testing
1 mi

Mr. Rooter Plumbing of San Bernardino

4.8(1,356)

Colton, CA · 1 mi

Backflow Testing

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…

Read more on Google
Website
Big Mike's Rooter & Plumbing Company, Inc. backflow testing
2 mi

Big Mike's Rooter & Plumbing Company, Inc.

4.2(95)

San Bernardino, CA · 2 mi

Backflow TestingCommercial

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…

Read more on Google
Website
Pro Backflow Testing Services backflow testing
Testing Verified
4 mi

Pro Backflow Testing Services

5.0(4)

Testing Verified · Rialto, CA · 4 mi

Backflow Testing
Website
Ballard Plumbing Heating & Air Conditioning backflow testing
5 mi

Ballard Plumbing Heating & Air Conditioning

4.9(2,297)

San Bernardino, CA · 5 mi

Backflow Testing

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…

Read more on Google
Website
Ferguson Waterworks backflow testing
5 mi

Ferguson Waterworks

No reviews yet

Riverside, CA · 5 mi

ResidentialEmergency ServiceFree Estimates
Website
Basic Backflow backflow testing
Testing Verified
6 mi

Basic Backflow

3.9(12)

Testing Verified · San Bernardino, CA · 6 mi

Backflow TestingPreventer InstallationPreventer Repair
Website
Rossman Plumbing backflow testing
7 mi

Rossman Plumbing

4.7(148)

Riverside, CA · 7 mi

Emergency Service
Website
NIR Plumbing & Air Conditioning backflow testing
Testing Verified
7 mi

NIR Plumbing & Air Conditioning

4.8(161)

Testing Verified · Riverside, CA · 7 mi

Backflow Testing
Website
LeBlanc Backflow Service backflow testing
Testing Verified
9 mi

LeBlanc Backflow Service

No reviews yet

Testing Verified · Moreno Valley, CA · 9 mi

Backflow TestingPreventer Repair
Website
Roto-Rooter Plumbing & Water Cleanup backflow testing
10 mi

Roto-Rooter Plumbing & Water Cleanup

No reviews yet

Riverside, CA · 10 mi

CommercialResidentialEmergency Service
Website
Dependable Plumber Inc backflow testing
10 mi

Dependable Plumber Inc

No reviews yet

Moreno Valley, CA · 10 mi

CommercialEmergency ServiceSame Day Service
Website
Mr. Rooter Plumbing of The Inland Empire backflow testing
11 mi

Mr. Rooter Plumbing of The Inland Empire

4.8(589)

Fontana, CA · 11 mi

Backflow Testing

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…

Read more on Google
Website
Righty Tighty Plumbing Inc. backflow testing
13 mi

Righty Tighty Plumbing Inc.

No reviews yet

Riverside, CA · 13 mi

CommercialResidential
Website
Jim & Sons Plumbing & Rooter backflow testing
Testing Verified
13 mi

Jim & Sons Plumbing & Rooter

5.0(760)

Testing Verified · Riverside, CA · 13 mi

Backflow TestingCommercialEmergency Service
Website
First Class Plumbing & AC backflow testing
13 mi

First Class Plumbing & AC

4.9(810)

Riverside, CA · 13 mi

CommercialEmergency Service
Website
Campbell Family Plumbing & Electric backflow testing
14 mi

Campbell Family Plumbing & Electric

4.9(87)

Riverside, CA · 14 mi

CommercialEmergency ServiceSame Day Service
Website
E.R. Block Plumbing Inc. backflow testing
15 mi

E.R. Block Plumbing Inc.

No reviews yet

Riverside, CA · 15 mi

Preventer InstallationPreventer RepairCommercial
Website
First Class Plumbing & AC backflow testing
15 mi

First Class Plumbing & AC

No reviews yet

Rancho Cucamonga, CA · 15 mi

CommercialEmergency Service
Website
Backflow Parts USA backflow testing
16 mi

Backflow Parts USA

4.8(9)

Rancho Cucamonga, CA · 16 mi

Website
Southern California Backflow backflow testing
Testing Verified
16 mi

Southern California Backflow

5.0(5)

Testing Verified · Riverside, CA · 16 mi

Backflow TestingPreventer InstallationPreventer Repair
Website
All City Plumbing, Air & Electrical backflow testing
16 mi

All City Plumbing, Air & Electrical

No reviews yet

Rancho Cucamonga, CA · 16 mi

Preventer RepairCommercial
Website
Amazing Force Plumbing & Backflow LLC backflow testing
18 mi

Amazing Force Plumbing & Backflow LLC

5.0(322)

Corona, CA · 18 mi

Backflow TestingPreventer InstallationPreventer Repair

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…

Read more on Google
Website

Frequently Asked Questions About Backflow Testing in Colton

Many municipalities in California require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Colton 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 Colton 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 Colton 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.

For Providers

Own a Backflow Testing Business?

Claim your listing to manage your profile, track leads, and get premium placement.