Piney Flats, TN Radon Levels

Q: What EPA Radon Zone is Piney Flats in?

Piney Flats is in Sullivan County, EPA Zone 1.

Q: How much does radon mitigation cost in Piney Flats?

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

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

Piney Flats, TN Radon Facts

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

County Sullivan County, TN

Zip Code 37686

Situated in Sullivan County within the Johnson City metropolitan area, Piney Flats lies in the Ridge and Valley province where limestone bedrock can contribute to radon accumulation. Testing data for the 37686 zip code remains limited, emphasizing the importance of individual home testing. The area's mix of older and newer construction, combined with the region's geological characteristics, means radon levels can vary significantly from home to home.

8.60

pCi/L area average

Above EPA Action Level

Sullivan County average: 8.60 pCi/L, based on 5 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Piney Flats 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+

Piney Flats, 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 Piney Flats, TN

No homeowner tests have been submitted for Piney Flats 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
Bluff City	5.8 mi	5.00 pCi/L	1
Blountville	6.4 mi	20.00 pCi/L	1
Johnson City	7.5 mi	4.20 pCi/L	5
Elizabethton	10.2 mi	7.33 pCi/L	3
Bristol	12.0 mi	6.50 pCi/L	2
Kingsport	12.5 mi	5.00 pCi/L	1
Jonesborough	13.6 mi	7.00 pCi/L	2
Telford	17.9 mi	12.00 pCi/L	1

Sullivan County Radon Profile

The bedrock and soils beneath Sullivan 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 4 cities in Sullivan County average 8.60 pCi/L across 5 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 Sullivan County.

Radon FAQ for Piney Flats, TN

What EPA Radon Zone is Piney Flats in?

Piney Flats and the 37686 zip code are in Sullivan 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 Piney Flats?

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

Radon mitigation in Piney Flats 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 Piney Flats?

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.