North Idaho Sprinklers
100/100 ✓ ID Utility-Approved Tester Verified ★ 4.3 (76 reviews) 4 certified testersOn City of Post Falls listOn Hayden Irrigation District list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Backflow testing companies in Idaho
From the approved tester lists of 4 water utilities (City of Twin Falls, City of Eagle Water and others), newest read August 7, 2026. Idaho publishes no statewide tester list we can use, so we start with its largest utility lists.
130 companies on the utility list
41 listed here, phones checked on Google
The lists we use in Idaho
- City of Twin Falls licensed backflow assembly testers and installers, City of Twin Falls: 54 companies based in Idaho, as of March 25, 2026.
- City of Eagle backflow prevention assembly tester list, City of Eagle Water: 43 companies based in Idaho, as of August 7, 2026.
- City of Post Falls registered backflow assembly testers, City of Post Falls Water Division: 27 companies based in Idaho, as of April 22, 2026.
- Hayden Irrigation District approved backflow testing companies, Hayden Irrigation District: 23 companies based in Idaho, as of March 4, 2026.
Being on a utility's list means that utility lets the company file backflow test reports in its system. It is not a state license. See Idaho backflow rules and how testers are certified.
Backflow testing businesses in Idaho
Ranked by our quality score: on the utility's current list, a phone that matches the business's Google profile, and a website. Nobody can pay to move up.
What the badges mean
- ✓ ID 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.
Epic Backflow
100/100 ✓ ID Utility-Approved Tester Verified ★ 4.9 (56 reviews) 2 certified testersOn City of Post Falls listOn Hayden Irrigation District list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Scotty’s Backflow
90/100 ✓ ID Utility-Approved Tester Verified ★ 4.8 (1143 reviews) On City of Post Falls listOn City of Eagle list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Evan's Plumbing Inc
90/100 ✓ ID Utility-Approved Tester Verified ★ 4.7 (294 reviews) On City of Twin Falls list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ ID Utility-Approved Tester Verified ★ 5 (169 reviews) On Hayden Irrigation District list Backflow Testing
Verified Oct 2026 · Unclaimed listing
✓ ID Utility-Approved Tester Verified ★ 3.7 (109 reviews) On City of Twin Falls list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Quality Service Plumbing
90/100 ✓ ID Utility-Approved Tester Verified ★ 5 (108 reviews) On City of Eagle list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Sprinklers Northwest
90/100 ✓ ID Utility-Approved Tester Verified ★ 3.6 (104 reviews) On Hayden Irrigation District list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Webb Landscape Inc.
90/100 ✓ ID Utility-Approved Tester Verified ★ 4.1 (91 reviews) On City of Twin Falls list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Hanks Custom Lawn Care
90/100 ✓ ID Utility-Approved Tester Verified ★ 4.2 (85 reviews) On City of Twin Falls list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Towns with approved testing companies
All 41 backflow testing businesses in Idaho, by town
Acequia: Southern Idaho Coatings LLC
Boise: A Perfect Repair Sprinkler and Backflow, All Valley Fire Inps. & Services, Assured Quality Lawn Sprinkling, Boise Backflow, Debest Plumbing, Thorpe Fire Sprinkler
Coeur d'Alene: Aspen Lawn Care, DC Sprinkler Service, LLC
Dalton Gardens: Hard To Scape, North Idaho Sprinklers
Eagle: High Desert Backflow LLC
Filer: Southern Idaho Landscape Center LLC
Garden City: ACCO Engineered Systems, HR2, Inc
Hayden: KDH Solutions LLC
Kingston: M & H Backflow
Meridian: Delta Fire Systems, Pacific Backflow, Quality Service Plumbing, State Fire
Nampa: Phoenix Fire Protection, Shilo Automatic Sprinkler, Viking Automatic Sprinkler
Post Falls: Epic Backflow, Scotty’s Backflow, Sunrise CPR & Water Inc., Three Trees Landscaping Inc., Top Shelf Handyman Pros
Rathdrum: Inland Sprinklers and Landscape, Sprinklers Northwest
Twin Falls: 24/7 Backflow Service, Backflow King, Delta Fire Systems, Inc., Elevation Backflow Testing and Repair LLC, Evan's Plumbing Inc, Fire Services of Idaho, Hanks Custom Lawn Care, Kimberly Nurseries LLC, U.S. Lawns of Twin Falls, Webb Landscape Inc.
Questions
Where do these Idaho backflow testing companies come from?
Idaho publishes no statewide list of backflow testers that we can use, so every business here is on the approved list of 4 water utilities (City of Twin Falls, City of Eagle Water and others): companies allowed to file backflow test reports in that water system. We read the list on August 7, 2026 and checked each company's phone against its Google profile.
Who is allowed to test a backflow preventer in Idaho?
A tester certified as Idaho's rules require, and usually one your water utility accepts. Our Idaho rules guide links the state rule. Ask any company for the tester's certificate number before the test.
How often does a backflow assembly need testing?
Most water utilities require testable backflow assemblies to be tested at installation and then every year. Your utility's notice gives your deadline and how the report is filed.
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 and we'll text you a month before it is due, with certified local testers ready to book.
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