Nicholas Giroux
Owner / Field Manager
[email protected](206) 549-4992Clean Water Champions · Edmonds, WA
Backflow testing & repair, done right the first time.
State-certified testers based in Edmonds, serving the I-5 corridor from Mount Vernon to Tacoma. We test and repair every type of backflow assembly, then file the report with your water purveyor for you.
- WA DOH-certified testers
- Reports filed with your purveyor
- 24/7 emergency dispatch
- 5.0-star rating on Google
Got a test notice?
- Book online or call us
- We test your assembly
- We file the report for you
- 10+ yrsHands-on backflow experience
- 24/7Emergency dispatch line
- 39 citiesMount Vernon to Tacoma
- 5.0 ★12 Google reviews
What we do
Every backflow service, one local crew
From a single lawn-sprinkler test to every assembly across a property portfolio, we handle the testing, the repairs, the permits and the paperwork.
Testing & Certification
Annual tests with a calibrated gauge, and the report goes straight to your purveyor.
Learn more
Backflow Repair
Failed test? We find the cause, rebuild it and retest, often on the same visit.
Learn more
Lawn Sprinklers
Sprinkler backflow tests, winterizing and freeze repairs for homes and HOAs.
Learn more
Maintenance Plans
We track every due date and reach out before the notice does. Built for HOAs and property managers.
Learn moreGot a letter from your water district?
Your backflow test is due. Here’s the easy way through it.
Washington requires testable backflow assemblies to be checked every year by a state-certified tester. When your purveyor’s notice shows up, you don’t need to figure out the rules. Just send it our way.
No notice, just wondering? Take the 30-second check →
Send us the notice
Call, email or book online. The notice tells us your assembly, location and due date.
We test on site
A certified tester checks every valve with a calibrated gauge, usually in under 30 minutes.
We file the report
We submit the results to your purveyor and email you a copy. Done for another year.
How it works
Water should only flow one way
A backflow assembly sits on your drinking-water line and keeps the water in your pipes (sprinkler water, boiler water, anything in your system) from flowing back into the public supply when the pressure drops.
Two check valves
Water passes through two spring-loaded checks that snap shut if the flow ever tries to reverse.
A relief valve
On an RP assembly, a relief valve between the checks dumps water out rather than let it flow backward.
Tested every year
Springs and rubber wear out, so a state-certified tester has to prove it still closes, every year. That’s where we come in.
Reviews
Rated 5.0 out of 5 on Google
From 12 customer reviews. What people mention most: fast response times, quick and efficient testing, great communication, and honest, straightforward work.
“Showed up same day and finished up the job quickly and professionally.”
“Very communicative, quick and efficient with our backflow assembly test.”
Who we work with
Built for homeowners, property managers and businesses
Homeowners
Lawn-sprinkler, boiler, pool and water-feature assemblies. We test, explain the results in plain English and file the paperwork.
HOAs & property managers
Every assembly across every property on one calendar, tested in batches, with one invoice and a summary your board will actually read.
Commercial & industrial
Restaurants, clinics, labs, car washes, breweries, multifamily and fire lines. High-hazard assemblies tested around your operating hours.
Local & owner-operated
The people who answer the phone are the people who show up
Advanced Backflow Solutions is owned and run by Nicholas and Shelby Giroux, based right here in Edmonds. No call centers, no subcontractors, just certified testers who care about getting it right and leaving your property clean.
- State-certified backflow assembly testers
- Calibrated, maintained test equipment
- Clear quotes before any repair
- Permit coordination handled in-house
- Residential & commercial experience
- 24/7 emergency dispatch
24/7Emergency line
Service area
Serving Puget Sound, from Mount Vernon to Tacoma
Based in Edmonds, right in the middle, we cover 39 cities across Skagit, Snohomish, King and Pierce County. Don’t see yours? Call us, because we probably cover it.
Mount Vernon, WABackflow testing in Mount Vernon Marysville, WABackflow testing in Marysville Everett, WABackflow testing in Everett Lynnwood, WABackflow testing in Lynnwood Edmonds, WABackflow testing in Edmonds Shoreline, WABackflow testing in Shoreline Seattle, WABackflow testing in Seattle Bellevue, WABackflow testing in Bellevue Renton, WABackflow testing in Renton Kent, WABackflow testing in Kent Federal Way, WABackflow testing in Federal Way Tacoma, WABackflow testing in Tacoma
Your backflow experts
Meet the team
Shelby Giroux
Co-Owner / Project Manager
[email protected](206) 549-4992Backflow guides
Straight answers, before you even call
Plain-English guides to the questions we hear every week. See all guides.
Got a backflow test notice?
What the letter from your water utility means, and how to handle it in one call.
Washington testing requirements
Who needs a test, how often, and who’s allowed to do it.
Failed your test?
Why assemblies fail, how repairs work, and how the retest works.
Winterize your backflow
The ten-minute fall routine that prevents a cracked assembly.
FAQ
Backflow questions, answered
What is a backflow test?
A certified tester connects a calibrated differential-pressure gauge to the test cocks on your assembly and confirms that each check valve holds tight and, on reduced-pressure assemblies, that the relief valve opens when it should. A typical test takes 15–30 minutes per assembly, and water to the protected line is only off for part of that time.
How often does my backflow assembly need to be tested?
In Washington, testable backflow assemblies must be tested when they’re new, after any repair or move, and at least once a year after that. Your water purveyor sets your exact due date and usually mails a reminder.
Who is allowed to test backflow assemblies in Washington?
Only a Backflow Assembly Tester (BAT) certified by the Washington State Department of Health. Your purveyor won’t accept a test report from anyone else.
What happens if I ignore my test notice?
Purveyors send reminders, but continued non-compliance can lead to your water service being shut off until the assembly passes a test. It’s much cheaper and easier to book the test.
Do you send the results to my water district?
Yes, every time. We submit the test report to your purveyor and send you a copy for your records.
What if my assembly fails?
We’ll show you what failed and why, and give you a clear quote. Many failures are caused by debris or worn rubber parts that can be cleaned or rebuilt on the spot, then retested and filed as a pass.
Do you work with HOAs and property managers?
Absolutely. Our maintenance plans put every assembly across your properties on one schedule, with batched testing, one invoice and reminders before anything comes due.