Minnesota winters decide how backflow prevention works in Minnesota. Frost can reach five feet in the north, so testable devices on domestic services nearly always live indoors.

The state requires backflow testers to hold a credential through its plumbing program, and local utilities collect reports each year. Irrigation PVBs need fall blowouts and careful spring start-up. Grizzly Backflow & Plumbing connects Minnesota property owners with certified testers for annual backflow testing, irrigation backflow testing and backflow enclosure and freeze protection. Call (833) 990-5874.

Certified backflow testers working in and around Minnesota
RPZ, double check, PVB and fire line assemblies
Test reports filed with your water utility
A person on the phone at (833) 990-5874

(833) 990-5874

Why call us for backflow testing

Minnesota Owners Call Us for Backflow Testing

Minnesota frost is deep, and nearly every domestic device sits indoors. Grizzly Backflow & Plumbing connects Minnesota callers with credentialed testers who check the device and the space it sits in, including the drain for an RPZ.

Irrigation PVBs get tested after spring start-up and blown out in fall. Reports go to the local utility. Call (833) 990-5874 for annual backflow testing, freeze protection and backflow prevention in Minnesota.

Call (833) 990-5874

Certified testers

Testers whose certification your water utility accepts for Minnesota.

Report filing

Reports go in through the utility portal or on its own form.

Price first

You hear the price on the phone before the test is booked.

Readings, not guesses

Each check and relief valve gets an actual psid reading.

Repair on site

Rebuild kits for common brands, so many failed devices are fixed and retested in one visit.

Multi-device sites

Domestic, fire line and irrigation assemblies tested and tracked together.

Backflow testing FAQs

Questions about backflow testing

Common questions about backflow testing in Minnesota.

Talk to a person

How often does a backflow preventer need testing in Minnesota?

Most water utilities require a test once a year. Many also require one at installation, after any repair and after the device is moved. Your utility's notice letter gives the exact due date.

Will my water be off during the test?

Yes, briefly. The tester closes the shutoff valves on the assembly while reading the checks, so water downstream of the device is off until the test is done.

Does my lawn sprinkler system in Minnesota need a backflow preventer?

Almost every US plumbing code requires one on irrigation, since fertilizer, pesticide and standing water at the heads can siphon back. The device type depends on local code and how the system is laid out.

Do I need an expansion tank after installing a backflow preventer?

Often, yes. The device makes your plumbing a closed system, so heated water cannot expand back to the main and the water heater relief valve may start dripping.

Who sends the test report to the water utility?

The tester usually files it, either on the utility's paper form or through its online portal. Ask for a copy for your own records.

Book a backflow test

Backflow Test Due in Minnesota? Call now.

Certified testers for backflow testing in Minnesota. Call (833) 990-5874 and we go through the device and the price before anything is booked.

(833) 990-5874

Phone · (833) 990-5874