Calhoun, TN Radon Levels

Q: What EPA Radon Zone is Calhoun in?

Calhoun is in McMinn County, EPA Zone 1.

Q: How much does radon mitigation cost in Calhoun?

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

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

Calhoun, TN Radon Facts

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

County McMinn County, TN

Zip Code 37309

Found in McMinn County in southeastern Tennessee's ridge-and-valley region, Calhoun sits among limestone formations and shale deposits that characterize this part of Appalachian Tennessee. While specific radon data for zip code 37309 is currently unavailable, the area's geological setting suggests variable radon potential that requires individual testing. Homes built on the region's typical basement and crawl space foundations should be tested regardless of age or construction type.

15.00

pCi/L area average

Above EPA Action Level

McMinn County average: 15.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Calhoun 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+

Calhoun, 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 Calhoun, TN

No homeowner tests have been submitted for Calhoun 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
Athens	11.9 mi	15.00 pCi/L	1
Cleveland	13.3 mi	5.33 pCi/L	3
Vonore	34.7 mi	9.00 pCi/L	1
Loudon	35.7 mi	9.00 pCi/L	1
Signal Mountain	35.9 mi	7.00 pCi/L	1
Chattanooga	36.2 mi	5.00 pCi/L	2
Dunlap	37.2 mi	14.00 pCi/L	1
Lenoir City	43.1 mi	8.00 pCi/L	1

McMinn County Radon Profile

McMinn 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 McMinn County average 15.00 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 McMinn County to test, as levels can differ between neighboring homes.

Radon FAQ for Calhoun, TN

What EPA Radon Zone is Calhoun in?

Calhoun and the 37309 zip code are in McMinn 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 Calhoun?

No homeowner radon tests have been submitted for Calhoun yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the McMinn County average—are the best available indicator of local conditions until Calhoun 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 Calhoun?

Radon mitigation in Calhoun 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 Calhoun?

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.