Lake City, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Lake City in?

Lake City is in Marshall County, EPA Zone 1.

Q: How much does radon mitigation cost in Lake City?

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

Marshall County

EPA Zone 1

Agricultural Lake City in Marshall County sits in South Dakota's glacial prairie region, where ancient glacial deposits over Cretaceous formations create high radon potential similar to much of the northern Great Plains. The area's farm community housing in zip code 57247 typically features full basements ideal for radon accumulation. Testing data is currently unavailable, making professional radon assessment crucial given the region's geological risk factors.

Lake City, SD Radon Mitigation

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

Lake City, SD Radon Testing

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

Lake City Radon Facts

Key details about the radon risk profile for Lake City and the 57247 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Marshall County, SD

Zip Code

57247

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Lake City and the 57247 zip code are located in Marshall 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 Lake City, SD

What EPA Radon Zone is Lake City in?

Lake City and the 57247 zip code are in Marshall 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 Lake City?

Radon mitigation in Lake City 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 Lake City?

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