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New Madison, OH Radon Mitigation and Testing

Darke County
EPA Zone 1

New Madison, OH resides in Darke 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. Testing is recommended for all homes in the 45346 zip code area.

New Madison, OH Radon Mitigation

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

New Madison, OH Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

New Madison Radon Facts

Key details about the radon risk profile for New Madison and the 45346 zip code area.

EPA Radon Zone
Zone 1 — High Risk
County
Darke County, OH
Zip Code
45346
Predicted Screening Level
> 4.0 pCi/L (Zone 1)

New Madison and the 45346 zip code are located in Darke County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for New Madison, OH

What EPA Radon Zone is New Madison in?
New Madison and the 45346 zip code are in Darke 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 New Madison?
Radon mitigation in New Madison 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 New Madison?
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 with the most user-submitted radon test data in the state.

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
Chagrin Falls 4.67 pCi/L 3
Hamilton 10.00 pCi/L 2
Chardon 5.50 pCi/L 2
Strongsville 4.50 pCi/L 2
Maineville 10.00 pCi/L 1
Lancaster 9.00 pCi/L 1
West Chester 9.00 pCi/L 1
Amherst 6.00 pCi/L 1
Chillicothe 6.00 pCi/L 1
Lima 5.00 pCi/L 1