Ortley, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Ortley in?

Ortley is in Roberts County, EPA Zone 1.

Q: How much does radon mitigation cost in Ortley?

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

Roberts County

EPA Zone 1

Rural Roberts County community in northeastern South Dakota, Ortley occupies EPA Zone 1 where glacial till deposits create high radon potential across the prairie region. Testing data for zip code 57256 remains limited, making individual home testing essential for residents. The area's typical basement construction and underlying geological conditions can contribute to significant radon accumulation in homes.

Ortley, SD Radon Mitigation

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

Ortley, SD Radon Testing

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

Ortley Radon Facts

Key details about the radon risk profile for Ortley and the 57256 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Roberts County, SD

Zip Code

57256

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Ortley and the 57256 zip code are located in Roberts 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 Ortley, SD

What EPA Radon Zone is Ortley in?

Ortley and the 57256 zip code are in Roberts 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 Ortley?

Radon mitigation in Ortley 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 Ortley?

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