CALIFORNIA BACKFLOW & CHLORINATION
Purveyor-ready reports on every job.
Home › Backflow › Backflow Repair
Backflow Preventer Repair
When an RP, DC, or PVB device fails its annual test, the clock starts on getting it back into service before the water purveyor issues a non-compliance notice. We diagnose the failure on site and repair most devices the same visit.
What a Failed Test Usually Means
A failed annual test almost always traces back to a worn seat, a fouled check assembly, or a relief valve that will not hold pressure. Debris, mineral buildup, and normal wear on internal components are the most common causes, and they affect reduced pressure (RP), double check (DC), and pressure vacuum breaker (PVB) assemblies differently.
Our testers document the exact failure mode on the test report, so the repair addresses the actual problem rather than guessing at it.
What Our Backflow Repair Service Covers
Worn seats, discs, and check modules are replaced with manufacturer-matched parts to restore proper closure.
Relief valves on reduced pressure assemblies are rebuilt or replaced when they will not hold pressure.
Pressure vacuum breaker air inlets and poppets are repaired to restore a proper seal.
We carry or source full rebuild kits for older and discontinued device models rather than defaulting straight to replacement.
Pressure and leak diagnostics before and after the repair confirm the fix holds before we leave the site.
Once the device passes, results are submitted directly to the water purveyor with a copy provided for your records.
Why Choose California Backflow & Chlorination
Licensed & Insured
Every job is performed under C-36 Contractor License #1117687 and DPR License #140023, backed by the credentials California requires.
Certified Lab Results
Bacteriological and water-quality samples are processed through our state-certified laboratory partner, giving purveyors results they accept without question.
Purveyor-Ready Reports
Every report is formatted for direct submission to your water purveyor or inspecting agency, with same-day turnaround whenever lab results allow.
One Call Does It All
Plumbing, chlorination, and backflow work are handled by the same crew in one visit, so you are not coordinating three separate contractors.
How a Backflow Repair Visit Runs
We identify the exact failure mode on the failed device and confirm the fix needed before starting work.
Seats, discs, check modules, or relief valves are replaced with manufacturer-matched rebuild kits.
The repaired device is pressure tested and retested on site by our ABPA-certified testers.
Passing results are filed directly with the water purveyor, with a copy provided for your records.
Common Questions
Yes. Our trucks carry common rebuild kits for the device sizes and brands used throughout our service area, so most repairs and the required retest happen in one visit.
Cost depends on the device type and the parts needed. Call (858) 523-8113 with your test report and we will quote the repair before any work begins.
If a device is damaged beyond repair, we tell you plainly and quote a replacement rather than charging for parts that will not hold.
Yes. Once the repaired device passes, we submit the results directly to the purveyor of record and give you a copy for your files.
Call (858) 523-8113 to Schedule a Same-Visit Repair and Retest
✓ Same-Day Scheduling ✓ Upfront Pricing ✓ Purveyor-Ready Reports ✓ Licensed & Insured
California Backflow & Chlorination
Licensed C-36 Contractor #1117687
DPR License #140023
ABPA-Certified Backflow Testers
State-Certified Laboratory Partner
Contact
(858) 523-8113
spencer@cal-backflow.com
Serving Los Angeles, Orange, San Diego,
San Bernardino & Riverside Counties