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Backflow Repair

Failed your backflow test? We’ll get it passing.

We find out why it failed, give you a clear quote, rebuild or replace what’s needed, then retest and file the passing report with your purveyor, often all in one visit.

Book a repair (206) 549-4992

A failed test is common, and it’s usually fixable. Backflow assemblies are mechanical: springs weaken, rubber hardens and debris from water-main work lodges in the valves. Here’s how we handle it.

Why backflow assemblies fail

Debris on a check seat

Sand, scale or pipe shavings, often after nearby water-main work, keep a check valve from sealing.

Worn rubber parts

Check discs, O-rings and relief-valve diaphragms harden and crack with age and chlorine exposure.

Freeze damage

A single cold snap can crack a body, bonnet or test cock on an assembly that wasn’t drained.

Springs & shut-off valves

Weak springs, stuck relief valves or leaking shut-offs can prevent the assembly from holding pressure.

Our repair process

  1. Diagnose

    We test to pinpoint which valve failed and why, not just that it failed.

  2. Quote

    You get a clear price for repair or replacement before we start any work.

  3. Repair

    We clean, rebuild with manufacturer repair kits, or replace the assembly.

  4. Retest & file

    Every repair is retested on the spot, and the passing report goes to your purveyor.

Repair or replace?

Most failures can be fixed with a cleaning or a rebuild kit, which is almost always the most affordable option. We’ll recommend replacement when it genuinely makes more sense:

  • The body, bonnet or a test cock is cracked from freezing
  • The model is discontinued and parts are no longer available
  • The assembly is undersized, installed incorrectly or no longer on the approved list
  • Repeated rebuilds are costing more than a new assembly would

Water pouring from your RP assembly? A reduced-pressure assembly that discharges continuously from its relief valve has a problem inside. It’s protecting your water supply by dumping, but it will waste a lot of water and can flood the area. Close the assembly’s shut-off valves if you can, and call our 24/7 line: (425) 361-8886.

Brands we service

We repair and rebuild assemblies from all the major manufacturers you’ll find in the Puget Sound area, including Watts, Febco, Wilkins (Zurn), Apollo and Ames. If we don’t have the part on the truck, we’ll source it fast.

Repair FAQs

Why did my assembly fail when it passed last year?

Parts wear, and conditions change. Debris from nearby water-main repairs, a freeze, or simply another year of chlorine exposure on the rubber parts can all turn a pass into a fail. That’s exactly why purveyors require annual testing.

Can you repair it the same day as the test?

Often, yes. Many failures come down to debris or a worn rubber part we can clean or rebuild on the spot. If the assembly needs a part we don’t carry or a full replacement, we’ll schedule the fix as quickly as we can.

Do I have to report a failed test?

Many purveyors want to see the failed result along with the passing retest after repair. We handle that reporting for you, so your records stay complete.

Is it cheaper to repair or replace?

Repair is usually cheaper. Replacement makes sense when the assembly is cracked, obsolete or repeatedly failing. We’ll give you both options when it’s a close call.

More services

Everything backflow, under one roof

Testing, repairs, installs and emergencies, all handled by the same local crew, with the paperwork taken care of.

Testing & Certification

Annual tests by state-certified testers, filed with your purveyor.

Backflow Repair

Failed test? We rebuild or replace, retest and file the pass.

Installation

New, replacement and relocated assemblies, permitted and certified.

Maintenance Plans

Every due date tracked for homes, HOAs and portfolios.

24/7 Emergency

Burst assemblies, freeze damage and shut-off deadlines.

Service Area

39 cities from Mount Vernon to Tacoma.

Serving these cities

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