Charleston, TN Radon Levels

Q: What EPA Radon Zone is Charleston in?

Charleston is in Bradley County, EPA Zone 1.

Q: How much does radon mitigation cost in Charleston?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Charleston radon levels and find certified testing and mitigation professionals to keep your home safe

Charleston, TN Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Bradley County, TN

Zip Code 37310

Situated in southeastern Tennessee's Bradley County, Charleston lies within the Tennessee Valley where Paleozoic bedrock formations can contain uranium-bearing minerals that contribute to radon production. The area's housing mix includes both historic properties and newer subdivisions, with foundation types varying from crawl spaces to full basements. Although specific testing data for this community is currently unavailable, residents should prioritize radon testing given the region's geological characteristics.

5.33

pCi/L area average

Above EPA Action Level

Bradley County average: 5.33 pCi/L, based on 3 user-submitted tests across 1 city in the county. No homeowner readings have been submitted for Charleston itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Charleston, TN Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Radon Readings Near Charleston, TN

No homeowner tests have been submitted for Charleston yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Cleveland	8.5 mi	5.33 pCi/L	3
Athens	16.7 mi	15.00 pCi/L	1
Chattanooga	32.4 mi	5.00 pCi/L	2
Signal Mountain	33.0 mi	7.00 pCi/L	1
Dunlap	36.4 mi	14.00 pCi/L	1
Vonore	38.4 mi	9.00 pCi/L	1
Loudon	40.5 mi	9.00 pCi/L	1
Lenoir City	47.7 mi	8.00 pCi/L	1

Bradley County Radon Profile

The bedrock and soils beneath Bradley County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Bradley County average 5.33 pCi/L across 3 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Bradley County.

Radon FAQ for Charleston, TN

What EPA Radon Zone is Charleston in?

Charleston and the 37310 zip code are in Bradley 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.

Why are radon readings shown from areas near Charleston?

No homeowner radon tests have been submitted for Charleston yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Bradley County average—are the best available indicator of local conditions until Charleston homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Charleston?

Radon mitigation in Charleston 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 Charleston?

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.