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Well Water Testing · Adams, MN

Water testing in Adams

Water testing for Minnesota homes, above all those on a private well. An accredited laboratory tests the water for coliform bacteria and E. coli…

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Adams · Mower County

Well Water Testing in Adams

Water testing for Minnesota homes, above all those on a private well. An accredited laboratory tests the water for coliform bacteria and E. coli, nitrate, arsenic, lead, manganese, VOCs (volatile organic compounds), DRO (diesel range organics), 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.

Adams is a small farm town near the Iowa line. Housing here runs to small farm-town homes, across the town core.

Questions about a Adams home?  ·  Call or text (612) 457-1634

Well water in Mower County

MDA sampled 12 Mower County townships beginning in 2019, with follow-up sampling in 2020: Austin, Bennington, Frankford, Lansing, Le Roy, Lyle, Nevada, Pleasant Valley, Racine, Red Rock, Udolpho and Windom. We have not found a published countywide percentage, so we do not quote one. Mower is one of eight southeast Minnesota counties where MDH offers private well users free test kits; of 46 Mower kits analyzed through March 2025, 4 had nitrate above 10 mg/L.

County facts checked October 2026 against: wrl.mnpals.net, mda.state.mn.us, health.mn.gov, Minnesota Department of Health.

See all Adams inspections →  ·  More about well water testing →  ·  Every water test, explained →

Water tests available in Adams

Bacteria

Shows whether surface water or waste is reaching the well.

  • Total coliform bacteria
    Surface contamination reaching the well
    None should be present (MDH)
  • E. coli
    Fecal contamination from septic, manure or wildlife
    None should be present (MDH)

Health chemicals

No taste, color or smell. These are the long-term health checks.

  • Nitrate
    Fertilizer, septic and manure; highest risk to infants
    10 mg/L (EPA)
  • Arsenic
    Natural arsenic from Minnesota rock and soil
    10 µg/L (EPA)
  • Lead
    Lead service lines, solder and brass fixtures
    No safe level (MDH)
  • Manganese
    Natural manganese; a concern for infants
    100 µg/L for infants (MDH guidance)
  • Fluoride
    Natural fluoride; dental health
    4.0 mg/L (EPA)
  • Uranium
    Natural radionuclide in groundwater
    30 µg/L (EPA)

Petroleum & solvents

Fuel and chemical spills from old tanks or nearby sites.

  • VOCs (volatile organic compounds)
    Fuels, solvents, degreasers and paints
    Varies by compound (EPA)
  • DRO (diesel range organics)
    Diesel and heating-oil petroleum
    No limit of its own; a petroleum screen (MPCA)

Household quality

Staining, scale and taste, and choosing the right treatment.

  • Iron
    Rusty staining and metallic taste
    0.3 mg/L, aesthetic (MDH)
  • Hardness
    Scale buildup; sizing a water softener
    No health standard
  • pH
    Corrosive or scaling water
    6.5 to 8.5, aesthetic (EPA)
  • Sulfate
    Taste and odor; diarrhea risk for infants
    250 mg/L, aesthetic (EPA)

Limits from MDH, EPA and MPCA. Your lab report compares each result to these values.

Adams private well testing timeline

Minnesota Department of Health schedule: coliform bacteria every year, nitrate every other year, arsenic and lead at least once. Source: MDH
TestYear 1Year 2Year 3Year 4Year 5Year 6
Coliform bacteria
Nitrate
Arsenic
Lead

Test again any time after flooding, after work on the well, or when the water's taste, color or smell changes, and always when you buy a home with a well.

Water testing in Adams: what matters

Adams, MN water testing: well cap in the foreground, older brick country home behind it on the southwestern Minnesota prairie in autumn color
Coliform bacteria: MDH recommends testing every year →
Well cap in the foreground, 1970s rambler behind it in central Minnesota lake country in winter snow (Mower County, Minnesota)
DRO: a screen for diesel and heating-oil petroleum →
Adams, MN water testing: well cap in the foreground, split-level home on a wooded lot behind it in central Minnesota lake country in spring green
Nitrate: EPA limit 10 mg/L, highest risk to infants →

How deep Adams wells go

15 ftsand and gravel (most wells)sandstone and limestone (SE and east central, incl. Twin Cities)1,000+ ft · fractured rock such as granite (NE)
Source: MDH Well Owner's Handbook

Depth and aquifer change what is in the water. Test the well you are buying, not the neighbor's. Get a free instant quote

Arsenic in Adams private wells, out of every 100

About 40 in 100 have some arsenic About 10 in 100 are above the 10 µg/L standard

Source: Minnesota Department of Health

You can't see, smell or taste arsenic. One lab test tells you where the well stands. Get a free instant quote

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 does the water panel cover?
The panel covers coliform bacteria and E. coli, nitrate, arsenic, lead, manganese, VOCs (volatile organic compounds), DRO (diesel range organics), 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. VOCs and DRO screen for solvents and petroleum, such as fuel from an old oil tank or a nearby leak site. 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. Add it to your home inspection quote. Testing early in your inspection window leaves time to act on the results.
Has Mower County had well nitrate testing?
Yes. MDA sampled 12 Mower County townships starting in 2019, with follow-up in 2020. We do not quote a county percentage because we have not found one published. In MDH's kit program, 4 of 46 analyzed Mower kits were over 10 mg/L as of March 2025. Test your own well for a real answer.
My home is on city water. Is water testing still worth it?
Often yes. Community water systems follow EPA testing rules and report results in an annual Consumer Confidence Report, but that report does not measure your own plumbing. MDH and EPA say lead enters mainly from service lines and plumbing materials, and the only way to know is a tap test. MDH recommends an accredited lab, and your utility can say whether your home has a lead service line.
When should a home be tested for DRO or VOCs?
MDH suggests considering a VOC test when a well is near fuel tanks or a commercial or industrial area. MPCA reports petroleum has leaked at about 22,000 Minnesota sites, including home heating-oil tanks, and releases can threaten drinking water and send vapors into buildings. Reasons to test include a nearby leak site, a former or buried fuel tank, or a fuel odor or sheen. MPCA's leaking-tank-site database shows reported releases.
Do you cover Adams?
Yes — southern Mower County is within our service range.
Why would I need a DRO test on a house I'm buying?
A DRO test may be worth considering if the property has an old fuel or heating oil tank, or is near a petroleum release or contaminated site. It helps show whether petroleum may be present and which further tests are needed. Ask the seller for tank and release history as well.
What does a positive total coliform result mean in well water?
Coliform bacteria are common on the ground surface, so a positive result suggests surface contamination has entered the well. Most coliform bacteria do not cause disease, but their presence suggests disease-causing microorganisms may also be in the water. MDH advises using boiled or bottled water until the well is disinfected and a retest comes back negative.
What should I look for on a well cap?
The Department of Health asks owners to check whether the well cap is securely attached, broken, or missing, whether the casing has cracks, holes, or corrosion, and whether electrical conduit and other connections are watertight. Under Minnesota Rules 4725.5450, a vent must be screened with openings of 1/16 inch or less and point downward. A damaged cap or vent is a good reason to test for coliform bacteria.
How long does a well last, and are older wells riskier?
The Department of Health says a well's life varies: some last 100 or more years, though 25 to 50 years is more common. It lists wells built before 1974, when the Minnesota Well Code began, as higher risk for microbial contamination, along with leaking dug wells, wells in old frost pits, and wells with corroded casings. If the home's well predates 1974 or sits in a pit, a coliform test is a sensible baseline.
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