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State-certified water testing labs in Minnesota

26 state-accredited labs for drinking and well water testing in Minnesota.

5 cities & counties26 certified labs

Source: Minnesota Department of Health list of labs accredited for well water testing, list dated Oct 28, 2026. Find a Water Test is independent and not affiliated with the Minnesota Department of Health. Certification covers specific tests, so confirm the lab is certified for the ones you need: Verify a certification.

Major cities

Virginia 2

Counties in Minnesota A–Z

Smaller counties in Minnesota

Counties with only a few listings so far, grouped by county.

Becker County 1

Beltrami County 1

Brown County 1

Dakota County 1

Douglas County 1

Fillmore County 1

Goodhue County 1

RW

Red Wing City Laboratory

Red Wing, MN

State-accredited labDrinking waterBacteria testingChemical testingPublic or utility lab

Public water system lab. Many don't accept private well samples, so call first.

(651) 385-5144Directions
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Koochiching County 1

Lyon County 1

Nobles County 1

WP

Worthington Public Utilities Laboratory

Worthington, MN

State-accredited labDrinking waterBacteria testingChemical testingPublic or utility lab

Public water system lab. Many don't accept private well samples, so call first.

(507) 372-8660Directions
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Olmsted County 1

Sherburne County 1

St Louis County 1

Stearns County 1

Waseca County 1

Mail-in labs that ship to Minnesota

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Just need a lab? Every certified lab is listed above with directions.