MI · 83 COUNTIES

Well Water & Real Estate — Michigan

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

County Risk Distribution

83counties
High Risk — 43% Moderate Risk — 43% Low / Info — 14%

Free County Water Quality Reports

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

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For Homebuyers

Before purchasing a property with a private well in Michigan, 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 Michigan

Higher-Risk Counties in Michigan

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.

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 Michigan 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 Michigan. Browse by county to understand the specific contaminants detected and their risk levels.

Alcona County Low Alger County Moderate Allegan County High Alpena County Moderate Antrim County Moderate Arenac County High Baraga County Moderate Barry County Moderate Bay County Moderate Benzie County Low Berrien County Moderate Branch County High Calhoun County Moderate Cass County Low Charlevoix County Moderate Cheboygan County Moderate Chippewa County Low Clare County High Clinton County High Crawford County Low

View all 83 counties →