Backflow Installation
Backflow assembly installation, done right the first time
The right assembly for your hazard, sized and installed to code, permitted, tested at installation and registered with your purveyor, so it passes today and stays easy to test for years.
When you need a new assembly
- Installing a new lawn irrigation system
- New construction or a tenant improvement
- Your purveyor’s survey found an unprotected cross-connection
- Replacing a failed, cracked or obsolete assembly
- Moving an assembly out of a pit or crawlspace
- Adding a boiler, fire sprinklers or process equipment
Choosing the right assembly
The type of assembly is decided by the hazard it protects against, and by what your water purveyor and local plumbing official require. A lawn sprinkler with no chemicals might only need a double check or pressure vacuum breaker. The same system with a fertilizer injector, a restaurant, or a dental office needs a reduced-pressure assembly.
Approved models only
We install assemblies from Washington’s approved list, so your purveyor will accept them.
Sized to your flow
Undersized assemblies starve your system of pressure. We size for real demand.
Built for our winters
We plan drainage and freeze protection in from the start, including insulated enclosures where needed.
Easy to test later
Clearances and orientation that make every future annual test faster and cheaper.
Reduced-pressure assemblies never go in a pit. An RP assembly discharges water from its relief valve by design. Installed below grade, that port can end up submerged, defeating its purpose. RPs belong above ground with proper drainage. If yours is in a vault, ask us about relocating it.
How an installation works
Site visit
We look at the connection, the hazard and your purveyor’s requirements.
Quote & permit
You get a fixed quote. Our permit coordinator handles any required permits.
Install
Clean, code-compliant installation with minimal disruption to your water.
Test & register
We test at installation and file the initial report with your purveyor.
Installation FAQs
Do I need a permit to install a backflow assembly?
Often, yes. Many installations need a plumbing permit from your city or county, and your purveyor will want an installation test report. Our permit coordinator handles the paperwork so you don’t have to.
How long does an installation take?
A typical residential irrigation assembly is usually done in a few hours. Commercial and fire-line installations vary with size and access, and we’ll give you a timeline with your quote.
Can you move my assembly somewhere easier to reach?
Yes. Relocating assemblies out of pits, crawlspaces and cramped mechanical rooms is common work for us. It can make annual testing faster, cheaper and safer.
Will the new assembly be tested?
Always. Washington requires a test at installation, and we file that initial report with your purveyor before we leave.
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
- Arlington
- Auburn
- Bellevue
- Bothell
- Brier
- Burien
- Burlington
- Camano Island
- Des Moines
- Edmonds
- Everett
- Federal Way
- Fife
- Granite Falls
- Issaquah
- Kenmore
- Kent
- Kirkland
- Lake Forest Park
- Lake Stevens
- Lynnwood
- Marysville
- Mercer Island
- Mill Creek
- Monroe
- Mount Vernon
- Mountlake Terrace
- Mukilteo
- Redmond
- Renton
- Sammamish
- SeaTac
- Seattle
- Shoreline
- Snohomish
- Stanwood
- Tacoma
- Tukwila
- Woodinville