New Madison, OH Radon Levels
Check local New Madison radon levels and find certified testing and mitigation professionals to keep your home safe
New Madison, OH Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
Darke County, OH
Zip Code
45346
Situated in Darke County in west-central Ohio, New Madison falls within EPA Zone 1, indicating the state's highest radon potential areas. The region's glacial till deposits over limestone bedrock, combined with traditional Ohio farmhouse construction featuring basements and root cellars, create favorable conditions for radon accumulation. Testing data for zip code 45346 remains limited, making individual property testing essential for understanding radon exposure levels.
New Madison, 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 New Madison?
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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 in Ohio with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| 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 |