✓ WA Utility-Approved Tester Verified ★ 4.3 (22 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Approved backflow testers in Woodinville, WA
39 backflow testing businesses work within 25 miles of Woodinville, 2 of them based in town. Every one is on the approved tester list of 5 water utilities.
39 businesses within 25 miles
Backflow testing companies near Woodinville
Most of these businesses are also listed on Redmond, WA.
What the badges mean
- ✓ WA Utility-Approved Tester Verified On the city list
- The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
- 3 certified testers
- How many certified testers the roster lists at this business.
- ★ 4.8 (25 reviews)
- The Google rating, shown as Google reports it. It does not change the order.
Order is by our quality score, never by payment. How we verify listings.
Are you a backflow testing company near Woodinville? One sponsor per county, clearly labelled. Sponsor this county
✓ WA Utility-Approved Tester Verified ★ 3.8 (20 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Finishing Touches Landscape
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.8 (19 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ WA Utility-Approved Tester Verified ★ 5 (7 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Nor-Tech Fire Protection
90/100 ✓ WA Utility-Approved Tester Verified On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ WA Utility-Approved Tester Verified ★ 4.8 (1847 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Fire Chief Equipment
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.7 (9 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Dixon Backflow Testing
90/100 ✓ WA Utility-Approved Tester Verified ★ 5 (13 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
French Landscape Irrigation
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.9 (11 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Holmberg Mechanical
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.2 (20 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
AAA Fire Protection
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.8 (637 reviews) On Washington Water list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Moore Fire Protection
90/100 ✓ WA Utility-Approved Tester Verified ★ 4 (18 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
MacDonald Miller
90/100 ✓ WA Utility-Approved Tester Verified ★ 3 (4 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
CopperWorks Plumbing
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.5 (16 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Guardian Security
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.3 (274 reviews) On City of Bellevue listOn City of Snoqualmie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
ABC Water Specialty
90/100 ✓ WA Utility-Approved Tester Verified ★ 3.7 (11 reviews) On Washington Water listOn City of Sumner list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Alpine Sprinklers
90/100 ✓ WA Utility-Approved Tester Verified ★ 3.8 (28 reviews) On City of Bellevue listOn Washington Water listOn City of Snoqualmie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
McKinstry
90/100 ✓ WA Utility-Approved Tester Verified ★ 3.8 (67 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
ACCO Engineered Systems
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.5 (16 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
The Safety Team, Inc.
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.1 (13 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Iliad, Inc.
90/100 ✓ WA Utility-Approved Tester Verified On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ WA Utility-Approved Tester Verified ★ 5 (3 reviews) On City of Bellevue listOn City of Snoqualmie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ WA Utility-Approved Tester Verified ★ 5 (5 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
SJS Mechanical
90/100 ✓ WA Utility-Approved Tester Verified On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Columbia Fire
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.9 (27 reviews) On City of Bellevue listOn City of Sumner list Backflow Testing
Verified Oct 2026 · Unclaimed listing
All Phase Plumbing
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.8 (52 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ WA Utility-Approved Tester Verified ★ 4.5 (50 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Edlund Associates, Inc.
90/100 ✓ WA Utility-Approved Tester Verified On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Froula Alarm Systems
90/100 ✓ WA Utility-Approved Tester Verified ★ 4.2 (22 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Enviromech
90/100 ✓ WA Utility-Approved Tester Verified ★ 5 (14 reviews) On City of Bellevue list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Price reports
What a backflow test costs in Woodinville
Not enough reports yet for Woodinville to show a range. Be one of the first: it takes a minute and stays anonymous.
Published prices nationwide
$29.99 to $100 per assembly
$0$25$50$75$100$125
Every published price, with its source: what a backflow test costs.
Failed test? Published repair, rebuild and replacement prices: what a backflow repair or replacement costs.
Metro guide: Backflow testing in Seattle: every utility's rules, filing portals and published prices in one place.
Never miss your annual backflow test
Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested in Woodinville and we'll text you a month before it is due, with certified local testers ready to book.
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Backflow testing questions in Woodinville
Where are the backflow testing businesses listed for Woodinville based?
39 backflow testing businesses are listed within 25 miles of Woodinville. 2 are based in Woodinville itself, 14 more within 15 miles and 23 further out, up to 25 miles away. Other towns with more than one listing: Seattle (9), Bellevue (4) and Renton (4). The closest is Premier Mechanical & Electric, LLC, under 1 mile from Woodinville.
Which tester lists are the businesses near Woodinville on?
Every one is on the approved tester list of 5 water utilities.
How many of the backflow testing businesses near Woodinville have Google reviews?
35 of the 39 listed for Woodinville have 3 or more Google reviews. Day & Nite Plumbing & Heating has the most reviews, 1,847, with an average of 4.8 stars, as Google showed them at our last check.
Approved list: City of Bellevue backflow testing companies, City of Bellevue Utilities.
Approved list: Washington Water companies with certified backflow testers, Washington Water Service.
Approved list: City of Spokane backflow assembly testers, City of Spokane Water Department.
Approved list: City of Olympia certified backflow testers, City of Olympia Drinking Water Utility.
Approved list: Clark Public Utilities list of Washington State certified backflow testers, Clark Public Utilities.
Approved list: City of Lacey certified backflow assembly testers (BAT) list, City of Lacey Public Works.
Approved list: City of Yakima certified backflow prevention assembly testers, City of Yakima Water/Irrigation Division.
Approved list: City of Ridgefield approved backflow assembly testers, City of Ridgefield Public Works.
Approved list: City of Sumner approved backflow assembly testers, City of Sumner.
Approved list: City of DuPont certified backflow prevention assembly testers, City of DuPont Public Works.
Approved list: City of Snoqualmie backflow assembly testers, City of Snoqualmie.
Keep looking
- Redmond, WA(6 mi)
- Bellevue, WA(12 mi)
- Seattle, WA(16 mi)
- Issaquah, WA(16 mi)
- Renton, WA(21 mi)
- Tukwila, WA(21 mi)
- Burien, WA(22 mi)
- Poulsbo, WA(23 mi)
- Kent, WA(24 mi)
- Auburn, WA(31 mi)