Erwin, TN Radon Mitigation and Testing

Q: What EPA Radon Zone is Erwin in?

Erwin is in Unicoi County, EPA Zone 2.

Q: How much does radon mitigation cost in Erwin?

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

Unicoi County

EPA Zone 2

Situated in mountainous Unicoi County within the Johnson City metropolitan area, Erwin lies in an Appalachian valley with underlying sedimentary rock formations that can influence radon levels. The town's housing includes both historic railroad-era homes and newer mountain construction, many built with basements due to the sloping terrain. Since radon testing data is currently unavailable for zip code 37650, residents in this geologically active region should prioritize testing to assess their individual exposure risk.

Erwin, TN Radon Mitigation

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

Erwin, TN Radon Testing

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

Erwin Radon Facts

Key details about the radon risk profile for Erwin and the 37650 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Unicoi County, TN

Zip Code

37650

Predicted Screening Level

2–4 pCi/L (Zone 2)

Erwin and the 37650 zip code are located in Unicoi County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Erwin, TN

What EPA Radon Zone is Erwin in?

Erwin and the 37650 zip code are in Unicoi County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Erwin?

Radon mitigation in Erwin 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 Erwin?

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