New Underwood, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is New Underwood in?

New Underwood is in Pennington County, EPA Zone 2.

Q: How much does radon mitigation cost in New Underwood?

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

Pennington County

EPA Zone 2

Positioned in Pennington County near the Rapid City Metro area, New Underwood sits in South Dakota's moderate radon potential zone where prairie soils over sedimentary bedrock can produce variable radon levels. With testing data for the 57761 zip code area currently unavailable, homeowners should prioritize radon testing to understand their specific exposure risk. The region's combination of geological factors and typical basement construction in South Dakota homes makes individual testing particularly valuable.

New Underwood, SD Radon Mitigation

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

New Underwood, SD Radon Testing

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

New Underwood Radon Facts

Key details about the radon risk profile for New Underwood and the 57761 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Pennington County, SD

Zip Code

57761

Predicted Screening Level

2–4 pCi/L (Zone 2)

New Underwood and the 57761 zip code are located in Pennington County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for New Underwood, SD

What EPA Radon Zone is New Underwood in?

New Underwood and the 57761 zip code are in Pennington County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in New Underwood?

Radon mitigation in New Underwood 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 New Underwood?

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