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Well Water Testing · Newport, MN

Water testing in Newport

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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Newport · Washington County

Well Water Testing in Newport

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.

Newport is a Mississippi River city platted in 1857, now a mix of old river-town and new-build housing. Housing here runs to older river-town houses in the original townsite, mid-century homes, and newer townhomes and subdivisions, across the older streets along the Mississippi, the Interstate 494 and U.S. 61 corridors, and the newer developments on the edges.

Newport is served by our Saint Paul team →  ·  (612) 457-1634

Well water in Washington County

MDA's 2014-2015 township testing in Washington County covered Cottage Grove and Denmark. The final dataset held 441 wells with 15.0% at or over the 10 mg/L nitrate-nitrogen health risk limit. Cottage Grove (city) was 20.2% and Denmark 8.3%. MDA said Cottage Grove had more than 10% of wells over the limit. MDH lists coliform yearly, nitrate every year, and arsenic and lead at least once.

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

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

Water tests available in Newport

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.

Newport 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.

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Private wells and water systems around Newport

Newport, MN water testing: water filter pitcher on a counter in a Minnesota lake cabin kitchen
VOCs: fuels, solvents and degreasers →
Refrigerator water dispenser filling a glass in a modern white Minnesota kitchen (Washington County, Minnesota)
DRO: a screen for diesel and heating-oil petroleum →
Newport, MN water testing: laundry tub faucet running in a Minnesota farmhouse kitchen
Lead: MDH says no level is safe →

Nitrate in Washington County wells

15%

15% of 441 wells tested in Cottage Grove and Denmark were at or over the 10 mg/L nitrate standard (MDA township testing, 2014-2015).

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

How far a well must be from common hazards in Newport

  • Building (closest projection)3 ft
  • Lake, river, stream or pond35 ft
  • Septic tank50 ft
  • Drainfield (soil dispersal area)50 ft (100 ft sensitive well)
  • Animal feedlot or building (over 1 animal unit)50 ft
  • Cesspool or seepage pit75 ft (150 ft sensitive well)
  • Unroofed feedlot, 300+ animal units100 ft
  • Unprotected petroleum tank, 1,100+ gallons150 ft
Source: Minnesota Rules 4725.4450 and 4725.4350

Septic, feedlot or fuel tank near the well? A coliform and nitrate test shows whether it is reaching the water. Get a free instant quote

Arsenic in Newport 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 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.
Is nitrate high in Washington County wells?
In MDA's 2014-2015 testing, 15.0% of 441 wells were at or over 10 mg/L. Cottage Grove was 20.2% and Denmark 8.3%, so it depends on location. MDH recommends testing for coliform bacteria every year.
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.
Newport was platted in 1857 on the Mississippi — what should I know about older river-town houses?
They come with age and sometimes soil to match. Newport was platted in 1857, incorporated as a village in 1889, and sits on the Mississippi at the junction of Interstate 494 and U.S. Routes 10 and 61. Older streets can have small lots, stone or block basements, cast-iron drains and older wiring. Moisture in low basements, sewer laterals, roof and chimney age, and drainage on terrace slopes are worth attention. Newer homes get a check on grading, decks and window flashing.
What are VOCs in well water?
VOCs, or volatile organic compounds, are a group of organic chemicals found in products such as paints, solvents, pesticides, and petroleum products. EPA notes they can reach private wells through waste disposal, spills, and runoff. A laboratory test is the only way to find out whether any are in your well.
What is the safe level of arsenic in drinking water?
The EPA standard is 10 µg/L, equal to 10 parts per billion, though the EPA health goal is 0. MDH highly recommends taking action if a private well is above 10 µg/L, and notes that levels below the standard can still increase cancer risk over many years.
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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