Louisville, TN Radon Levels

Q: What EPA Radon Zone is Louisville in?

Louisville is in Blount County, EPA Zone 1.

Q: How much does radon mitigation cost in Louisville?

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

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

Louisville, TN Radon Facts

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

County Blount County, TN

Zip Code 37777

Situated in Blount County within the Knoxville Metro area, this Tennessee community currently has limited radon testing data for zip code 37777. The region's Appalachian geology and typical Tennessee housing with basements or crawl spaces can create varying radon conditions. Homeowners should conduct professional testing to determine their specific indoor air quality status.

13.67

pCi/L area average

Above EPA Action Level

Blount County average: 13.67 pCi/L, based on 3 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Louisville 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+

Louisville, TN Radon Mitigation

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

Need Radon Mitigation or Testing in Louisville?

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Radon Readings Near Louisville, TN

No homeowner tests have been submitted for Louisville 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
Maryville	8.6 mi	10.50 pCi/L	2
Knoxville	9.0 mi	4.00 pCi/L	1
Walland	11.9 mi	20.00 pCi/L	1
Lenoir City	13.4 mi	8.00 pCi/L	1
Oak Ridge	18.8 mi	7.00 pCi/L	2
Loudon	20.2 mi	9.00 pCi/L	1
Vonore	22.9 mi	9.00 pCi/L	1
Oliver Springs	23.5 mi	6.00 pCi/L	1

Blount County Radon Profile

Because of its underlying geology, Blount 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 2 cities in Blount County average 13.67 pCi/L across 3 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 Blount County home regardless of zone or a neighbor's results.

Radon FAQ for Louisville, TN

What EPA Radon Zone is Louisville in?

Louisville and the 37777 zip code are in Blount 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 Louisville?

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

Radon mitigation in Louisville 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 Louisville?

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.