Jefferson, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Jefferson in?

Jefferson is in Union County, EPA Zone 1.

Q: How much does radon mitigation cost in Jefferson?

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

Union County

EPA Zone 1

Positioned in southeastern Union County near the Iowa border, Jefferson sits on glacial deposits that can influence radon levels in area homes. Current testing data for this small community (zip code 57038) is limited, emphasizing the importance of individual radon testing for homeowners. The town's housing includes both historic farmsteads and newer residential properties with varying foundation types.

Jefferson, SD Radon Mitigation

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

Jefferson, SD Radon Testing

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

Jefferson Radon Facts

Key details about the radon risk profile for Jefferson and the 57038 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Union County, SD

Zip Code

57038

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Jefferson and the 57038 zip code are located in Union 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 Jefferson, SD

What EPA Radon Zone is Jefferson in?

Jefferson and the 57038 zip code are in Union 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 Jefferson?

Radon mitigation in Jefferson 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 Jefferson?

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