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Backflow testing in Grand Forks, ND

2 backflow testing businesses work within 25 miles of Grand Forks, 2 of them based in town. Every one has testers on North Dakota's certified backflow tester roster.

2 businesses within 25 miles

Certified backflow testers near Grand Forks

What the badges mean
✓ ND Certified Backflow Tester Verified
A state roster lists at least one certified tester at this business, with a current certificate. The state sets the exam and renewal.
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.

✓ ND Certified Backflow Tester Verified ★ 4.5 (29 reviews) On ND Plumbing Board certified Backflow Testing

1120 Dyke Ave, Grand Forks, ND 58203 · under 1 mile from Grand Forks

Verified Oct 2026 · Unclaimed listing

Lawn King ND

90/100
✓ ND Certified Backflow Tester Verified ★ 4.1 (54 reviews) On ND Plumbing Board certified Backflow Testing

1601 Dyke Ave, Grand Forks, ND 58203 · under 1 mile from Grand Forks

Verified Oct 2026 · Unclaimed listing

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 Grand Forks 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 Grand Forks

Who can test a backflow preventer in Grand Forks?

A tester certified as North Dakota's rules require, and accepted by your water utility. The companies here are on the approved list of ND Plumbing Board certified: companies allowed to file backflow test reports in that system. Check the notice your utility sent.

How many backflow testing companies serve Grand Forks?

2 companies on the approved list of ND Plumbing Board certified work within 25 miles of Grand Forks, 2 of them based in town.

How often do I need a backflow test?

Most utilities require a test when the assembly is installed and then every year. Your utility's notice gives the due date and how the tester files the report.

Approved list: North Dakota State Plumbing Board certified backflow assembly testers, North Dakota State Plumbing Board.

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