Knoxville, TN Radon Levels
Check local Knoxville radon levels and find certified testing and mitigation professionals to keep your home safe
Knoxville, TN Radon Facts
Serving as a major city within Knox County in the Knoxville Metro area, this Tennessee community shows an average radon level of 4.0 pCi/L, right at the EPA's action threshold. Located in zip code 37902 within the Great Valley's limestone and dolomite geology, homes with basements typical of East Tennessee construction should continue regular radon monitoring despite being at the borderline level.
Based on 1 user-submitted radon test for homes in Knoxville, TN. The EPA recommends taking action at or above 4.0 pCi/L.
Knoxville, TN Radon Mitigation
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Knoxville, TN Radon Levels
User-submitted radon test readings from homes in the Knoxville area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Knoxville, TN | 0-20 Years | Full Basement |
Have a radon test result for Knoxville? Submit your reading to help other homeowners.
Radon Readings Near Knoxville, TN
Compare radon levels in Knoxville with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Oak Ridge | 15.9 mi | 7.00 pCi/L | 2 |
| Walland | 17.2 mi | 20.00 pCi/L | 1 |
| Maryville | 17.5 mi | 10.50 pCi/L | 2 |
| Lenoir City | 18.5 mi | 8.00 pCi/L | 1 |
| Maynardville | 20.1 mi | 5.00 pCi/L | 1 |
| Oliver Springs | 20.9 mi | 6.00 pCi/L | 1 |
| Loudon | 26.0 mi | 9.00 pCi/L | 1 |
| Jefferson City | 29.9 mi | 5.00 pCi/L | 1 |
Knox County Radon Profile
Knox County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 1 city in Knox County average 4.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Knox County to test, as levels can differ between neighboring homes.