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Mishawaka, IN Radon Levels

Check local Mishawaka radon levels and find certified testing and mitigation professionals to keep your home safe


Mishawaka, IN Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County St Joseph County, IN
Zip Code 46544

Part of the South Bend Metro area in St. Joseph County, Mishawaka sits on glacial till deposits that can facilitate radon gas movement from underlying limestone bedrock. The city's mix of mid-20th century homes with full basements and newer construction presents varying radon risks across different neighborhoods. With testing data limited for zip codes 46544 and 46545, residents should test their homes to establish accurate radon levels for their specific properties.

Mishawaka, IN Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Radon FAQ for Mishawaka, IN

What EPA Radon Zone is Mishawaka in?
Mishawaka and the 46544 zip code are in St Joseph County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
How much does radon mitigation cost in Mishawaka?
Radon mitigation in Mishawaka typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Mishawaka?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Indiana

Cities in Indiana with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
Bloomington 8.14 pCi/L 7
Kokomo 7.40 pCi/L 5
Lafayette 15.00 pCi/L 3
Valparaiso 10.00 pCi/L 3
Westfield 6.33 pCi/L 3
Avon 6.00 pCi/L 3
West Lafayette 10.50 pCi/L 2
Dyer 9.50 pCi/L 2
Columbus 7.50 pCi/L 2
Noblesville 7.00 pCi/L 2