London, OH Radon Levels
Check local London radon levels and find certified testing and mitigation professionals to keep your home safe
London, OH Radon Facts
London in Madison County shows concerning radon levels with testing revealing a 9.0 pCi/L average, well above the EPA's recommended 4.0 threshold. Part of the Columbus Metro area, this 43140 community sits on glacial deposits over limestone bedrock that creates favorable conditions for radon accumulation. The area's predominantly full-basement construction provides enclosed spaces where radon can concentrate to dangerous levels.
Based on 1 user-submitted radon test for homes in London, OH. The EPA recommends taking action at or above 4.0 pCi/L.
London, OH Radon Mitigation
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London, OH Radon Levels
User-submitted radon test readings from homes in the London area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 9 pCi/L | London, OH | 0-20 Years | Full Basement |
Have a radon test result for London? Submit your reading to help other homeowners.
Radon FAQ for London, OH
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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 |