Harriman, TN Radon Mitigation and Testing

Q: What EPA Radon Zone is Harriman in?

Harriman is in Roane County, EPA Zone 1.

Q: How much does radon mitigation cost in Harriman?

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

Roane County

EPA Zone 1

Positioned in Roane County within East Tennessee's Ridge and Valley region, Harriman is situated on limestone and shale formations that create favorable conditions for radon gas production. The city's housing stock spans from early 20th-century homes to modern subdivisions, with many properties featuring basements or crawl spaces where radon can accumulate. Given the absence of current testing data for zip code 37748, professional radon testing is strongly recommended for all Harriman residents.

Harriman, TN Radon Mitigation

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

Harriman, TN Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Harriman Radon Facts

Key details about the radon risk profile for Harriman and the 37748 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Roane County, TN

Zip Code

37748

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Harriman and the 37748 zip code are located in Roane County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Harriman, TN

What EPA Radon Zone is Harriman in?

Harriman and the 37748 zip code are in Roane 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.

How much does radon mitigation cost in Harriman?

Radon mitigation in Harriman 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 Harriman?

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.

Most Active Radon Markets in Tennessee

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Elizabethton	7.33 pCi/L	3
Cleveland	5.33 pCi/L	3
Johnson City	4.33 pCi/L	3
Maryville	10.50 pCi/L	2
Columbia	8.50 pCi/L	2
Bristol	6.50 pCi/L	2
Chattanooga	5.00 pCi/L	2
Clarksville	20.00 pCi/L	1
Kingsport	5.00 pCi/L	1
Knoxville	4.00 pCi/L	1
Greeneville	No submissions	0
Murfreesboro	No submissions	0