Limestone, TN Radon Levels
Check local Limestone radon levels and find certified testing and mitigation professionals to keep your home safe
Limestone, TN Radon Facts
Limestone in Washington County, part of the Johnson City Metro area, shows a concerning radon level of 7.0 pCi/L that exceeds EPA guidelines. Built on Ordovician limestone formations in the Tennessee Valley, this 37681 community exemplifies how Appalachian geology can produce elevated indoor radon concentrations. Properties throughout the area should be tested, as the limestone bedrock creates favorable conditions for radon gas migration into homes.
Based on 1 user-submitted radon test for homes in Limestone, TN. The EPA recommends taking action at or above 4.0 pCi/L.
Limestone, TN Radon Mitigation
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Limestone, TN Radon Levels
User-submitted radon test readings from homes in the Limestone area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 7 pCi/L | Limestone, TN | 21-50 Years | Full Basement |
Have a radon test result for Limestone? Submit your reading to help other homeowners.
Radon Readings Near Limestone, TN
Compare radon levels in Limestone with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Telford | 4.9 mi | 12.00 pCi/L | 1 |
| Jonesborough | 8.0 mi | 7.00 pCi/L | 2 |
| Johnson City | 14.5 mi | 4.20 pCi/L | 5 |
| Kingsport | 19.7 mi | 5.00 pCi/L | 1 |
| Blountville | 24.2 mi | 20.00 pCi/L | 1 |
| Elizabethton | 24.4 mi | 7.33 pCi/L | 3 |
| Bluff City | 26.6 mi | 5.00 pCi/L | 1 |
| Russellville | 31.6 mi | 9.00 pCi/L | 1 |
Washington County Radon Profile
Because of its underlying geology, Washington 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 5 cities in Washington County average 6.00 pCi/L across 9 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 Washington County home regardless of zone or a neighbor's results.