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Greenwich, OH Radon Levels

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


Greenwich, OH Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Huron County, OH
Zip Code 44837

Located in Huron County in north-central Ohio, Greenwich (44837) sits on glacial till deposits over sedimentary bedrock that can produce varying radon levels across the community. Testing data for this rural area remains limited, making individual home assessment crucial for residents to understand their radon risk. The mix of farmhouses and newer residential construction creates different foundation styles that influence radon entry potential.

Greenwich, OH Radon Mitigation

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

Need Radon Mitigation or Testing in Greenwich?

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Radon FAQ for Greenwich, OH

What EPA Radon Zone is Greenwich in?
Greenwich and the 44837 zip code are in Huron 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 Greenwich?
Radon mitigation in Greenwich 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 Greenwich?
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 Ohio

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

CityAvg User Radon LevelSubmissions
Marietta 8.00 pCi/L 5
Cincinnati 5.20 pCi/L 5
Hilliard 11.75 pCi/L 4
Wilmington 5.25 pCi/L 4
Newark 15.00 pCi/L 3
Athens 11.33 pCi/L 3
Findlay 10.33 pCi/L 3
Perrysburg 9.67 pCi/L 3
Powell 8.33 pCi/L 3
Columbus 6.00 pCi/L 3