Groton, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Groton in?

Groton is in Brown County, EPA Zone 1.

Q: How much does radon mitigation cost in Groton?

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

Brown County

EPA Zone 1

Groton is positioned in Brown County in northeastern South Dakota, where glacial deposits and underlying sedimentary formations can create conditions that elevate radon concentrations in area homes. The small community's housing stock reflects typical rural South Dakota construction patterns with many homes featuring full basements. With radon testing data for the 57445 zip code currently unavailable, residents are encouraged to conduct professional testing to establish accurate radon measurements for their properties.

Groton, SD Radon Mitigation

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

Groton, SD Radon Testing

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

Groton Radon Facts

Key details about the radon risk profile for Groton and the 57445 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Brown County, SD

Zip Code

57445

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Groton and the 57445 zip code are located in Brown 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 Groton, SD

What EPA Radon Zone is Groton in?

Groton and the 57445 zip code are in Brown 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 Groton?

Radon mitigation in Groton 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 Groton?

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