Corryton, TN Radon Levels

Q: What EPA Radon Zone is Corryton in?

Corryton is in Knox County, EPA Zone 1.

Q: How much does radon mitigation cost in Corryton?

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

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

Corryton, TN Radon Facts

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

County Knox County, TN

Zip Code 37721

Located in Knox County as part of the greater Knoxville Metro area, Corryton sits in the Tennessee Valley where limestone bedrock can contribute to radon gas production. The community's suburban housing mix in zip code 37721 includes various foundation types that may influence radon accumulation patterns. Given limited local testing data, homeowners should conduct professional radon testing regardless of home age or style.

4.00

pCi/L area average

Above EPA Action Level

Knox County average: 4.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Corryton 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+

Corryton, 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 Corryton, TN

No homeowner tests have been submitted for Corryton 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
Maynardville	8.0 mi	5.00 pCi/L	1
Knoxville	14.3 mi	4.00 pCi/L	1
Jefferson City	18.5 mi	5.00 pCi/L	1
Walland	25.3 mi	20.00 pCi/L	1
Oak Ridge	26.1 mi	7.00 pCi/L	2
La Follette	26.1 mi	12.00 pCi/L	1
White Pine	28.8 mi	4.00 pCi/L	1
Morristown	29.6 mi	7.00 pCi/L	2

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.

Radon FAQ for Corryton, TN

What EPA Radon Zone is Corryton in?

Corryton and the 37721 zip code are in Knox 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 Corryton?

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

Radon mitigation in Corryton 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 Corryton?

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.