Fort Thompson, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Fort Thompson in?

Fort Thompson is in Buffalo County, EPA Zone 1.

Q: How much does radon mitigation cost in Fort Thompson?

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

Buffalo County

EPA Zone 1

Fort Thompson, SD resides in Buffalo 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. Testing is recommended for all homes in the 57339 zip code area.

Fort Thompson, SD Radon Mitigation

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

Fort Thompson, SD Radon Testing

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

Fort Thompson Radon Facts

Key details about the radon risk profile for Fort Thompson and the 57339 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Buffalo County, SD

Zip Code

57339

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Fort Thompson and the 57339 zip code are located in Buffalo 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 Fort Thompson, SD

What EPA Radon Zone is Fort Thompson in?

Fort Thompson and the 57339 zip code are in Buffalo 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 Fort Thompson?

Radon mitigation in Fort Thompson 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 Fort Thompson?

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 South Dakota

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

City	Avg User Radon Level	Submissions
Spearfish	7.75 pCi/L	4
Rapid City	10.50 pCi/L	2
Aberdeen	8.50 pCi/L	2
Sioux Falls	6.00 pCi/L	2
Watertown	6.00 pCi/L	2