Lemmon, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Lemmon in?

Lemmon is in Perkins County, EPA Zone 1.

Q: How much does radon mitigation cost in Lemmon?

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

Perkins County

EPA Zone 1

Positioned near the North Dakota border in Perkins County, Lemmon sits atop Pierre Shale formations that contribute to South Dakota's elevated radon potential across the northern plains. With no current testing data available for zip code 57638, residents should prioritize radon testing given the area's EPA Zone 1 classification. The region's geological composition and often harsh winters, which keep homes sealed tight, can create conditions where radon accumulates to concerning levels.

Lemmon, SD Radon Mitigation

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

Lemmon, SD Radon Testing

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

Lemmon Radon Facts

Key details about the radon risk profile for Lemmon and the 57638 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Perkins County, SD

Zip Code

57638

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Lemmon and the 57638 zip code are located in Perkins 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 Lemmon, SD

What EPA Radon Zone is Lemmon in?

Lemmon and the 57638 zip code are in Perkins 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 Lemmon?

Radon mitigation in Lemmon 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 Lemmon?

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