MN · 87 COUNTIES

Well Water & Real Estate — Minnesota

Guidance for homebuyers, sellers, and real estate professionals dealing with private well properties in Minnesota.

County Risk Distribution

87counties
High Risk — 82% Moderate Risk — 17% Low / Info — 1%

Free County Water Quality Reports

Every county in Minnesota has a free downloadable water quality report covering contaminant data, detection rates, and risk context — useful for buyers, sellers, and agents alike.

Find Your County Report →

For Homebuyers

Before purchasing a property with a private well in Minnesota, commission an independent water test. Sellers are not always required to disclose water quality issues, and visual inspection of the water tells you nothing about dissolved contaminants.

Key steps before closing

Lender requirements

FHA and VA loans require a well water test before closing if the property uses a private well. The test must be performed by a state-certified lab and must meet EPA drinking water standards for coliform bacteria and nitrate at minimum. Some lenders require a broader panel. Build testing time into your closing timeline.

Find a Testing Lab in Minnesota

Higher-Risk Counties in Minnesota

The following counties have elevated contaminant detection rates based on available groundwater data. Buyers purchasing in these areas should prioritize comprehensive testing and budget for potential treatment.

Aitkin County Iron, Chloride High Anoka County PFOA, PFOA High Becker County Sulfate, Chloride High Beltrami County Iron, Sodium High Benton County Chloride, Sulfate High Big Stone County Chloride, Sodium High Brown County Chloride, Iron High Carlton County Sodium, Chloride High Chippewa County Iron, Sulfate High Chisago County Nitrate, Sulfate High Clay County Iron, Sulfate High Clearwater County Iron, Sulfate High Cook County PFOA, Iron High Cottonwood County Chloride, Sulfate High Crow Wing County Iron, Chloride High Dakota County PFOS, PFOS High Dodge County Sulfate, Arsenic High Douglas County Chloride, Sulfate High Faribault County Iron, Nitrate High Fillmore County Chloride, Nitrate High Freeborn County Nitrate, Chloride High Goodhue County Chloride, Iron High Grant County Sulfate, Chloride High Hennepin County Sodium, Sulfate High Isanti County Iron, Manganese High Itasca County Sulfate, Sodium High Jackson County Chloride, Sodium High Kanabec County Chloride, Manganese High Kandiyohi County Iron, Sulfate High Kittson County Chloride, Iron High Lac qui Parle County Chloride, Sodium High Le Sueur County Iron, Sulfate High Lincoln County Iron, Sulfate High Lyon County Chloride, Sulfate High Mahnomen County Sulfate, Chloride High Marshall County Iron, Chloride High Martin County Chloride, Iron High McLeod County Chloride, Sulfate High Meeker County Chloride, Arsenic High Mille Lacs County Sulfate, Iron High Mower County PFOA, PFOS High Murray County PFOA, PFOS High Nicollet County High Nobles County High Norman County High Otter Tail County Sulfate, Arsenic High Pennington County High Pine County Iron, Sulfate High Pipestone County Chloride, Nitrate High Polk County Iron, Sulfate High Pope County Sulfate, Iron High Ramsey County PFOA, PFOS High Redwood County Chloride, Sulfate High Renville County Nitrate, Iron High Rice County Chloride, Sulfate High Roseau County Sulfate, Sodium High Scott County Chloride, Sulfate High Sibley County Chloride, Sulfate High St. Louis County PFOS, PFOA High Stearns County PFOA, PFNA High Stevens County Iron, Sulfate High Todd County PFOA, PFOS High Traverse County High Wabasha County PFOS, PFOA High Wadena County Chloride, Iron High Waseca County High Washington County PFOA, PFOS High Watonwan County Chloride, Sulfate High Wilkin County Sulfate, Chloride High Wright County Iron, Chloride High Yellow Medicine County Iron, Chloride High

For Sellers

Having a current water test in hand before listing removes a common source of buyer anxiety and can prevent deals from falling through during inspection. It also demonstrates good faith transparency.

Get your well tested before listing →

For Real Estate Professionals

Every county in Minnesota has a free one-page water quality factsheet available as a PDF — useful for buyer consultations, disclosures, and due diligence packets. These reports cover detected contaminants, sample counts, risk context, and recommended testing for private well properties.

Browse County Reports →

County-by-County Risk Context

Water quality varies significantly across Minnesota. Browse by county to understand the specific contaminants detected and their risk levels.

Aitkin County High Anoka County High Becker County High Beltrami County High Benton County High Big Stone County High Blue Earth County Low Brown County High Carlton County High Carver County Moderate Cass County Moderate Chippewa County High Chisago County High Clay County High Clearwater County High Cook County High Cottonwood County High Crow Wing County High Dakota County High Dodge County High

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