Reports within 24 hours · Get your free instant quote
Certified Master Inspector sealCloser Look InspectorsStatewide Minnesota & IowaFree Instant Quote
Well Water Testing · Grasston, MN

Water testing in Grasston

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

Get Your Free Instant QuoteSee What's Included
Grasston · Kanabec County

Well Water Testing in Grasston

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 year, and arsenic and lead at least once.

Grasston is a Kanabec County village on Grass Lake, with a post office since 1899. Housing here runs to early-1900s village houses, some mid-century farmhouses, and a few newer homes, on lots that mostly run on wells and septic, across the village blocks by Grass Lake and the farm ground along Highways 70 and 107.

Grasston is served by our Big Lake team →  ·  (612) 457-1634

Well cap in the foreground, modern farmhouse with black windows behind it on the edge of the Twin Cities suburbs in winter snow: well water testing in Grasston, MN
Nitrate: EPA limit 10 mg/L, highest risk to infants →

Well water in Kanabec County

MDA's 2018 township testing in Kanabec County covered Southfork Township, where 115 wells were tested and 4.3% were over the 10 mg/L nitrate-nitrogen health standard. It is one township, so use it as a hint, not a rule. MDH says arsenic is elevated in central and west-central Minnesota and can swing between neighboring wells, and lists coliform yearly, nitrate every year, and arsenic and lead at least once.

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

Well cap in the foreground, newer two-story home on a rural lot behind it on the edge of the Twin Cities suburbs in autumn color: well water testing in Grasston, MN
Coliform bacteria: MDH recommends testing every year →

Home inspection in Grasston →  ·  More about well water testing →  ·  Every water test, explained →

Pairs well with:

Septic inspection in GrasstonRadon testing in GrasstonSewer scope in Grasston

Water tests available in Grasston

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. Compare your lab results with these values.

Grasston private well testing timeline

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

When to test your water

  • Every yearColiform bacteria and nitrate, the basic safety checks for a private well. Nitrate can come from fertilizer, septic systems and animal waste.
  • At least onceArsenic and lead. Arsenic can differ even between neighboring wells.
  • Before a baby drinks the waterColiform bacteria, nitrate, arsenic, lead and manganese. MDH recommends testing a private well for all five before a baby drinks the water.
  • When you buy a homeA full baseline while you can still ask questions or negotiate.
  • After flooding or well workFlooding and repairs to the well are reasons to test again.
  • When taste, color or smell changesMDH says a change in taste, smell or look is a reason to test for coliform bacteria.
  • Near a fuel tank or industrial siteVOCs, plus DRO for diesel and heating oil. MDH says to consider a VOC test if the well is near fuel tanks or a commercial or industrial area.
  • City water in an older homeLead. MDH says homes built before 1940 may have lead service lines, and plumbing parts made before 1986 may contain lead.

Based on: MDH well testing, MDH coliform bacteria, MDH nitrate, MDH water for babies, MDH flood precautions, MDH lead.

How to get it done

  1. Choose your testsPick the water testing you need in the free instant quote.
  2. Pick a timeBook online. The quote takes about 30 seconds.
  3. Get certified lab resultsA certified laboratory analyzes the water and reports each result.

Get Your Free Instant Quote

Nitrate in Kanabec County wells

4.3%

4.3% of 115 wells tested in Southfork Township were at or over the 10 mg/L nitrate standard (MDA township testing, 2018).

Source: Minnesota Department of Agriculture township testing

Township numbers are averages. Only a test of your own well tells you its nitrate level. Get a free instant quote

Arsenic in Grasston 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

How long a private well lasts in Grasston

0255075100+ years
25 to 50 years is common
100+ possible

Wells built before 1974, when Minnesota's well code began, are listed by MDH as higher risk for bacteria, along with leaking dug wells, wells in old frost pits and wells with corroded casings.

Source: Minnesota Department of Health

Wells built before 1974 often have no record on file. Test the water before you close. 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 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.
What did MDA find in Kanabec County wells?
In Southfork Township's 2018 testing, 4.3% of 115 wells were over the 10 mg/L nitrate health standard. That is one township. Because arsenic can vary between nearby wells, MDH advises testing for it at least once. MDH also recommends testing for lead at least once.
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.
Grasston peaked at 239 people in 1920 — how does that show up in its houses?
It shows up as age. A post office has served Grasston since 1899, and the village peaked at 239 residents in 1920, then slid to about 105 by 2000 before recovering to about 154 in 2020. That leaves a mix of century-old houses, some sitting quiet for years, and newer replacements. Typical findings include unheated winters in old plumbing, rodent entry, old knob-and-tube or patched wiring, worn roofs and sagging porch framing. Wells and private septic are common in small Kanabec County towns, so we ask for records and check the systems that are visible.
How common is arsenic in Minnesota well water?
MDH reports about 10 percent of private wells in Minnesota have arsenic above the 10 µg/L standard, and arsenic was detected in about 40 percent of new wells drilled since 2008. Some wells have reached 350 µg/L. Levels vary between wells, even close together, so each well needs its own test.
How can I reduce lead in my tap water?
Run the tap for at least one minute before drinking or cooking if the water has sat for six hours or more, and use cold water for drinking, cooking, and formula. MDH lists carbon filters certified to remove lead, reverse osmosis, and distillation as treatment options. Replacing lead sources addresses the cause.
Does a new well get tested for arsenic?
Yes. Minnesota Rules 4725.5650 requires the person constructing a new potable well to have a sample collected within 30 days, before the well is used, and analyzed for total coliform bacteria, nitrate-nitrogen, and arsenic. The Department of Health says contractors have tested new wells for arsenic since August 2008, and recommends owners test at least once beyond that initial test. A follow-up arsenic test gives a second data point, and MDH suggests retesting about six months after construction if arsenic was detected.
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.
Keep looking

More across Minnesota.

Well Water Testing nearby

Other inspections in Grasston

Questions about well water testing

In-depth guides

Free instant quote

Build your quote in 30 seconds.

No phone tag, no callback delay. Price and book your inspection right here — it takes about 30 seconds and there is no obligation.

Free Instant Quote & SchedulerPowered by InspectorData
Free Instant Quote