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Backflow Test

Certified Backflow Preventer Repair Services in Southern California

Cover Your Brass delivers reliable backflow preventer repair services across Southern California, with AWWA-certified technicians restoring and testing devices for residential, commercial, and municipal properties to safeguard potable water and ensure full regulatory compliance.

Our Certifications & Professional Standards

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Licensed Backflow Preventer Repair and Replacement Services for Commercial and Residential SoCal Properties

As a leading backflow preventer repair and replacement service provider in Southern California, Cover Your Brass delivers certified, compliant services that protect potable water and ensure regulatory compliance for residential, commercial, and municipal properties. Operating under Contractors LIC C36-1109399, with AWWA-certified technicians, Los Angeles County Health Certification, and a Cross Connection Control Specialist, we repair leaking backflow valves, replace worn assemblies, and perform required backflow testing with proper documentation and compliance tracking. We provide complete backflow solutions, including testing, repair, compliance, and certification, along with cross-connection control surveys, waterline chlorination, emergency backflow repair, and installation of in-house-manufactured backflow cages to protect equipment. With 25+ years in the industry, our mission is to deliver honest, dependable backflow services while staying compliant with all regulations. We operate transparently by recommending only what is necessary, offering honest, affordable pricing, and standing behind every repair and replacement we complete. Call 562-206-7888 to schedule licensed backflow preventer repair or replacement with AWAA-certified technicians who resolve the failure and complete certified retesting. We provide inspection-ready documentation to keep your residential, commercial, or municipal water system compliant and protected throughout Southern California.

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Why Choose Cover Your Brass for Reliable Backflow Preventer Repair in SoCal?

Choose Cover Your Brass for reliable backflow preventer repair in Southern California to correct leaks or faults, restore proper water pressure, and ensure your backflow preventer passes required testing and compliance standards. With Contractors LIC C36-1109399, AWWA-certified backflow technicians, 25+ years in the industry, in-house manufactured backflow cages for equipment protection, honest and affordable pricing, proper documentation, and compliance tracking, our team repairs worn check valve assemblies, replaces damaged seals and springs, and delivers dependable backflow preventer repair solutions while standing behind every compliant service we perform.

Flat-Rate Repair Pricing

Fast, Leak-Free Restoration & Reliable Performance

No Hidden or Emergency Fees

Licensed & Certified Backflow Specialists

Accurate Diagnosis & Code-Compliant Fixes

What is the Exact Process for Backflow Preventer Repair with Cover Your Brass?

1.

Schedule Your Backflow Repair Service

The property owner schedules a backflow preventer repair with Cover Your Brass, and our AWWA-certified backflow technician confirms the device location, recent backflow test results, and any reported leaks or pressure issues. This initial coordination allows our team to prepare the correct backflow repair kit, replacement parts, and testing equipment before arriving at the residential, commercial, or municipal property in Southern California.

4.

Disassemble & Inspect Internal Components

After pressure stabilization, our AWWA-certified technician opens the valve assembly and removes internal components, including the check valve, relief valve, bonnet, and poppet assembly, seals, and springs for detailed inspection. By examining each component for wear, damage, or debris buildup, our team identifies the exact cause of backflow preventer failure and determines whether targeted backflow preventer repair will restore proper function within the water system.

7.

Test the Repaired Assembly for Proper Function

Our certified backflow technician conducts backflow testing on the repaired assembly using calibrated testing equipment to measure check valve performance, relief valve operation, and pressure stability. Successful test readings confirm that the backflow preventer blocks contaminated water from reversing into the potable water supply and demonstrate compliance with required California standards.

2.

On-Site Inspection & Issue Diagnosis

Our certified backflow technician inspects the backflow preventer, identifies visible leaks, checks water pressure levels, and evaluates the check valve and relief valve assembly for signs of wear or malfunction. This detailed inspection allows our backflow preventer repair team in SoCal to diagnose whether the backflow prevention device has failed due to worn seals, damaged springs, debris buildup, or cross-connection pressure imbalance within the water system.

5.

Replace Worn or Damaged Parts (Seals, Springs, Valves, etc.)

Once the faulty components are identified, our certified backflow technician installs new seals, springs, check valve parts, and relief valve components using manufacturer-approved backflow preventer repair kits. By fitting each replacement part precisely within the valve assembly, our SoCal backflow repair team restores proper sealing, stabilizes water pressure, and prepares the backflow prevention device for final testing and certification.

8.

Certification, Compliance Documentation & Final Review

Once the repaired backflow preventer passes testing, our technician completes the required certification paperwork and documents all repair details, test results, and compliance status for the property record. We provide proper documentation and maintain compliance tracking to confirm the backflow prevention device meets local regulation standards and remains approved for residential, commercial, and municipal water systems throughout Southern California.

3.

Shut Off Water Supply & Relieve Pressure

Our Southern California backflow technician shuts off the water supply to the backflow device and relieves internal pressure within the valve assembly to prevent uncontrolled water discharge during the repair. This controlled shutdown protects the plumbing system, stabilizes water pressure, and creates a safe working condition before disassembling the backflow preventer.

6.

Reassemble & Clean the Device

After installing the new components, our backflow repair technician carefully reassembles the backflow preventer and tightens each fitting to manufacturer specifications to ensure a secure valve assembly. This thorough cleaning and reassembly process removes debris from internal passages, restores proper water flow within the plumbing system, and prepares the backflow prevention device for functional testing.

Our Other Backflow Services

Backflow Testing & Certification

We provide certified backflow testing and certification services throughout Southern California to protect public and private potable water supplies and meet mandatory annual compliance requirements for residential, commercial, and municipal properties. Our AWWA-certified backflow testers use calibrated equipment to test each backflow prevention device, identify failures early, and submit certification reports that are accepted by local water authorities and inspection agencies.


With regular backflow testing, we help protect public health by preventing contaminated water from entering the water system, detecting leaks and pressure issues before they cause damage, and maintaining compliance with required backflow prevention standards. Our backflow technicians document accurate results and ensure every tested device remains inspection-ready and properly certified.

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Get Custom Backflow Cages From Cover Your Brass

Backflow Cage

Backflow Enclosures

FDC Cage

Custom Enclosures

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Large Installations

Cover Your Brass provides custom backflow cages in Southern California to protect backflow preventers from theft, tampering, and environmental damage while maintaining regulatory compliance. Our in-house-fabricated, lockable steel enclosures are designed with proper clearance for certified backflow testing and are tailored to fit RPZ, DCVA, PVB, and AVB assemblies, keeping residential, commercial, and municipal water systems secure and inspection-ready.

Our Service Areas for Backflow Preventer Repair and Replacement

At Cover Your Brass, we provide certified backflow preventer repair and replacement services throughout Southern California, including select areas in Los Angeles, Orange County, San Diego, and Riverside. Our AWWA-certified technicians repair leaking backflow prevention devices and protect potable water systems for residential, commercial, and municipal properties across the region.

Hear What Our Real Customers Say

“Bill at Cover Your Brass, was amazing! He came to do backflow testing and, initially, it looked like we might need a costly repair. He double-checked and performed a "flush" of the system at no extra cost and saved us the expense of what would have been an uneeded repair. This business is trustworthy, and easy-to communicate with. I highly recommend!"

Jayna Zimmelman

Our Backflow Preventer Repair Project Gallery

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Time to Fix Your Backflow Preventer?

Has your backflow preventer failed inspection, started leaking, or caused pressure issues within your plumbing system in Southern California? Cover Your Brass specializes in certified backflow preventer repair, testing, replacement, and compliance services for residential, commercial, and municipal potable water systems.


Call 562-206-7888 to schedule trusted backflow preventer repair with AWWA-certified technicians that correct the failure, restore compliance, and document approved test results. We inspect the device, complete the repair, and provide proper certification to keep your potable water system safe and inspection-ready.

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