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Well Water Testing · Gilman, MN

Well Water Testing in Gilman

Well water testing for homes on a private well across Minnesota. We collect the sample the right way and send it to an accredited laboratory for…

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Gilman · Benton County

Well Water Testing in Gilman

Well water testing for homes on a private well across Minnesota. We collect the sample the right way and send it to an accredited laboratory for coliform bacteria and E. coli, nitrate, arsenic, lead, manganese, iron, hardness, pH, fluoride, sulfate and uranium. The Minnesota Department of Health recommends testing a private well for coliform bacteria every year, nitrate every other year, and arsenic and lead at least once. We also look at the visible wellhead, the pressure tank and the water treatment equipment during the home inspection.

Gilman is a small Benton County farm town on Highway 25 anchored by Sts. Peter and Paul Catholic Church. Housing here runs to older farm-town homes, mid-century ranch houses and a few newer builds, in a city of about 226 people, across the small townsite around Sts. Peter and Paul Catholic Church, Highway 25 and County Road 3, and the farmland beyond.

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Well water in Benton County

Benton sits in central Minnesota, where MDH says the highest shares of new wells with arsenic detections are found, so a first arsenic test is worth doing on any private well. MDA's Township Testing Program sampled Langola, Maywood, Minden and Watab townships: the final dataset held 690 wells and 7.2% were at or over the 10 mg/L nitrate limit, with Langola at 14.4%. MDH also gives 100 µg/L as the safe manganese level for infant formula. We test for coliform bacteria and E. coli, nitrate, arsenic, lead, manganese, iron, hardness, pH, fluoride, sulfate and uranium through an accredited lab.

County facts checked September 2026 against: Minnesota Department of Health, Minnesota Department of Health, Minnesota Department of Health, mda.state.mn.us, bentoncountymn.gov, mndata.web.health.state.mn.us.

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Questions

Common questions.

Who needs well water testing?
Any home on a private well, and above all when you are buying one. A private well is not regulated like a city water system, so the owner is responsible for knowing what is in the water. Testing before closing tells you whether the water needs treatment while you can still ask questions or negotiate.
What do you test for?
Our lab panel covers coliform bacteria and E. coli, nitrate, arsenic, lead, manganese, iron, hardness, pH, fluoride, sulfate and uranium. Bacteria and nitrate are the short-term health checks. Arsenic, lead, manganese and uranium are the ones you cannot see or taste. Iron, hardness, pH and sulfate explain staining, scale, odor and wear on plumbing and appliances.
How often should a well be tested?
The Minnesota Department of Health recommends coliform bacteria every year, nitrate every other year, and arsenic and lead at least once. Test again after flooding, after any work on the well, or if the taste, color or smell of the water changes.
Is well water testing part of the home inspection?
It is an add-on. Book it with the home inspection and we collect the sample the same visit, so the lab results arrive with time to act on them inside your inspection window.
What did the state find when it tested nitrate in Benton County wells?
MDA tested four Benton townships. Of 690 wells in the final dataset, 7.2% were at or over the 10 mg/L health limit, and township results ran from 1.6% in Maywood to 14.4% in Langola. Nitrate has no taste or smell, so MDH suggests testing every other year. Your own well can differ from the township average, which is why a lab result on the specific well is what matters at purchase.
Does the sandy ground around Gilman change what an inspector checks?
It can. Benton County's surface sediments are mostly sandy glacial deposits with thin, patchy till, so water usually drains quickly, but that same drainage carries surface pollution toward groundwater and can leave fill or backfill settling around foundations. Gilman is in Frost Zone II, where MN Rule 1303.1600 sets footings at 3-1/2 feet, so we look at whether garages, additions and decks were set deep enough. We check grading, downspout discharge, window wells, wall cracks and sump pumps, and note that horizontal or stair-step cracks matter more than hairlines. If the house is on a private well and septic system, we look at those closely. The Highway 25 area homes are worth a full look.
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