Sewanee, TN Radon Levels

Q: What EPA Radon Zone is Sewanee in?

Sewanee is in Franklin County, EPA Zone 3.

Q: Why are radon readings shown from areas near Sewanee?

No homeowner radon tests have been submitted for Sewanee yet, so readings from the closest cities and the Franklin County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Sewanee?

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

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

Sewanee, TN Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Franklin County, TN

Zip Code 37375

Sewanee in Franklin County sits atop Tennessee's Cumberland Plateau within the Chattanooga Metro area, where limestone bedrock and karst features can influence local radon levels. This university community in the 37375 zip code area features a mix of historic homes and institutional buildings, many with basement or partial basement foundations. Though comprehensive radon testing data is currently unavailable, the area's limestone geology suggests residents should prioritize home radon testing.

4.00

pCi/L area average

Above EPA Action Level

Franklin 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 Sewanee 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+

Sewanee, 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 Sewanee, TN

No homeowner tests have been submitted for Sewanee 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
Winchester	11.4 mi	4.00 pCi/L	1
Dunlap	31.9 mi	14.00 pCi/L	1
Signal Mountain	32.7 mi	7.00 pCi/L	1
Mcminnville	34.3 mi	6.50 pCi/L	2
Shelbyville	36.7 mi	10.50 pCi/L	2
Chattanooga	37.6 mi	5.00 pCi/L	2

Franklin County Radon Profile

Franklin County is classified as EPA Radon Zone 3, the lowest predicted-risk tier, with modeled indoor screening averages below 2 pCi/L. Homeowner-submitted tests from 1 city in Franklin 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. 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 Franklin County.

Radon FAQ for Sewanee, TN

What EPA Radon Zone is Sewanee in?

Sewanee and the 37375 zip code are in Franklin County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

Why are radon readings shown from areas near Sewanee?

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

Radon mitigation in Sewanee 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 Sewanee?

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.