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Well Water Testing · Mankato, MN

Well Water Testing in Mankato

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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Mankato · Blue Earth County

Well Water Testing in Mankato

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.

Mankato is a Minnesota River valley city of historic neighborhoods and university-area housing. Housing here runs to 1880s-1920s Old Town and Lincoln Park homes on stone and block foundations, 1960s-80s hilltop ramblers and split-levels around the university, and newer subdivisions east toward Eagle Lake, across Old Town, Lincoln Park and the historic downtown blocks in the valley; the hilltop around Minnesota State University; and the newer east-side growth toward Eagle Lake.

Mankato is served by our Mankato team →  ·  (507) 721-3820

Well water in Blue Earth County

MDA's 2018 township testing in Blue Earth County covered five vulnerable townships and 642 tested wells, and 0.3% were over the 10 mg/L nitrate-nitrogen health standard. That is a low rate, but it is a township-scale sample, so your own well can differ. MDH says about 10 percent of Minnesota private wells exceed 10 ug/L arsenic, and levels can change a lot across short distances. MDH lists coliform yearly, nitrate every other year, and arsenic and lead at least once. We also run manganese, iron, hardness, pH, fluoride, sulfate and uranium.

County facts checked September 2026 against: blueearthcountymn.gov, 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.
Are Blue Earth County wells high in nitrate?
In MDA's 2018 results for five townships, 0.3% of 642 wells tested over the 10 mg/L health standard. That is a sample of certain townships, not a guarantee for one property. We test nitrate on an accredited lab report, and MDH lists nitrate every other year for private wells.
What do Mankato home inspectors look for that a checklist misses?
It depends which Mankato you are buying in. In the valley — Old Town, Lincoln Park, downtown — it is stone and block foundations, knob-and-tube remnants, 60-amp services, cast-iron stacks and clay sewer laterals under century-old trees, which is why we recommend a sewer scope there. On the hilltop it is first-generation furnaces at end of life, slope drainage on walkout lots and campus conversions with amateur wiring. East toward Eagle Lake it is builder details on former farm ground. Blue Earth County is Radon Zone 1, so a 48-hour test rides along on most visits.
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