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Well Water Testing · Cologne, MN

Well Water Testing in Cologne

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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Cologne · Carver County

Well Water Testing in Cologne

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.

Cologne is a small lake-side Carver County town of older homes and new subdivisions. Housing here runs to older homes and new subdivisions, across the old rail core and the new lake-side development.

Well water in Carver County

MDA's 2018 township testing in Carver County covered San Francisco Township, where 160 wells were tested and 2.5% were over the 10 mg/L nitrate-nitrogen health standard. That is one township, so treat it as a regional signal. MDH says arsenic runs about 10 percent above 10 ug/L statewide and can vary widely between nearby wells, and it lists coliform yearly, nitrate every other year, and arsenic and lead at least once. We test those plus manganese, iron, hardness, pH, fluoride, sulfate and uranium through an accredited lab.

County facts checked September 2026 against: mda.state.mn.us, mda.state.mn.us, Minnesota Department of Health, Minnesota Department of Health.

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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.
Is nitrate a problem for Carver County private wells?
MDA's 2018 initial testing in San Francisco Township found 2.5% of 160 wells over the 10 mg/L health standard. One township does not describe every property. Nitrate is only one item, so we pair it with coliform/E. coli, arsenic, lead and manganese on the same accredited lab report. Coliform bacteria and E. coli are the pass-fail items lenders and buyers ask about first.
Do you cover Cologne?
Yes — the fast-growing town's new subdivisions get a build-quality read while the old core gets the older-home treatment.
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