Backflow Testing, Repair, and Installation
CMS Plumbing is fully certified to perform backflow prevention testing, repair, and installation for all sizes and types of systems. Our team ensures that your property’s water supply remains safe, compliant, and protected from contamination.
A backflow prevention device is essential for keeping clean water separate from potential pollutants that can flow backward into the public water system due to pressure changes. Without proper prevention, harmful substances—such as chemicals, fertilizers, or bacteria—can enter the potable water supply, posing serious health risks.
To maintain safety and comply with local regulations, annual backflow testing is required. CMS Plumbing provides professional testing services to verify that your device is functioning correctly and meets all code requirements. If repairs or replacements are needed, our licensed technicians handle everything quickly and efficiently.
We also supply and install protective cages and enclosures to safeguard backflow assemblies from vandalism, theft, and environmental damage, extending the life of your system.
With CMS Plumbing, you can rely on expert service, certified technicians, and a commitment to water safety and compliance for both commercial and residential properties
Top-Rated plumbers
In the Bay Area
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Free & Detailed Estimates ProvidedWe offer upfront quotes before we get to work.
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Emergency After-Hour ServiceWhen you need plumbing fast, don't hesitate to call!
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Over 40 Years of ExperienceWe take pride in being experts at all things plumbing.
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We Get the Job Done Right the First TimeExceeding your expectations is our #1 goal.
We Let out customers do the talking
Hear Their Thoughts on CMS Plumbing!
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"He was careful with my Aunt’s home built in 1949."He was careful with my Aunt’s home built in 1949.- Clarke B.
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"All in all, a super job. I have had no issues since his visit."All in all, a super job. I have had no issues since his visit.- Katherine
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"I will recommend CMS Plumbers to ANYONE"Worked with plumbers most of my life. I know plumbing, and I have to say the service I received from CMS was OUTSTANDING! On time, respectful, knowledgeable, professional, and SKILLED! I will recommend CMS Plumbers to ANYONE in need of a plumber, and I will do it with confidence.- Mark B.
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"On time and very professional"I was very pleased with Kevins Service today. He was on time and very professional. Thanks so much.- Rick Crouch
