Franklin, TN Radon Levels
Check local Franklin radon levels and find certified testing and mitigation professionals to keep your home safe
Franklin, TN Radon Facts
Franklin in affluent Williamson County is part of the Nashville Metro area, built on limestone bedrock that contributes to moderate radon potential across middle Tennessee. Testing data across zip codes 37064, 37067, and 37069 shows an average level of 5.0 pCi/L, which exceeds the EPA action level of 4.0 pCi/L. The area's predominantly newer homes with basement and crawl space foundations require careful radon assessment and potential mitigation.
Based on 1 user-submitted radon test for homes in Franklin, TN. The EPA recommends taking action at or above 4.0 pCi/L.
Franklin, TN Radon Mitigation
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Franklin, TN Radon Levels
User-submitted radon test readings from homes in the Franklin area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 5 pCi/L | Franklin, TN | 0-20 Years | Full Basement |
Have a radon test result for Franklin? Submit your reading to help other homeowners.
Radon Readings Near Franklin, TN
Compare radon levels in Franklin with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Brentwood | 5.6 mi | 8.50 pCi/L | 2 |
| College Grove | 12.3 mi | 3.00 pCi/L | 1 |
| Nashville | 14.7 mi | 7.00 pCi/L | 1 |
| Pegram | 15.5 mi | 2.00 pCi/L | 1 |
| Smyrna | 19.5 mi | 7.00 pCi/L | 1 |
| Hermitage | 21.9 mi | 4.00 pCi/L | 1 |
| Madison | 23.5 mi | 5.00 pCi/L | 1 |
| Old Hickory | 24.7 mi | 12.00 pCi/L | 1 |
Williamson County Radon Profile
Because of its underlying geology, Williamson County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 3 cities in Williamson County average 6.25 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Williamson County home regardless of zone or a neighbor's results.