Allen, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Allen in?

Allen is in Bennett County, EPA Zone 2.

Q: How much does radon mitigation cost in Allen?

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

Bennett County

EPA Zone 2

Located in Bennett County in southwestern South Dakota's Pine Ridge region, Allen sits within the Great Plains where Pierre shale and other sedimentary formations create moderate radon potential. This rural community in zip code 57714 features housing typical of western South Dakota, including ranch-style homes and manufactured housing with various foundation types. Since comprehensive radon testing data for Allen is not available, local residents should conduct independent testing to establish baseline radon levels for the area.

Allen, SD Radon Mitigation

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

Allen, SD Radon Testing

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

Allen Radon Facts

Key details about the radon risk profile for Allen and the 57714 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Bennett County, SD

Zip Code

57714

Predicted Screening Level

2–4 pCi/L (Zone 2)

Allen and the 57714 zip code are located in Bennett 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 Allen, SD

What EPA Radon Zone is Allen in?

Allen and the 57714 zip code are in Bennett 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 Allen?

Radon mitigation in Allen 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 Allen?

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