Gregory, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Gregory in?

Gregory is in Gregory County, EPA Zone 2.

Q: How much does radon mitigation cost in Gregory?

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

Gregory County

EPA Zone 2

Gregory, SD resides in Gregory 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. Testing is recommended for all homes in the 57533 zip code area.

Gregory, SD Radon Mitigation

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

Gregory, SD Radon Testing

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

Gregory Radon Facts

Key details about the radon risk profile for Gregory and the 57533 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Gregory County, SD

Zip Code

57533

Predicted Screening Level

2–4 pCi/L (Zone 2)

Gregory and the 57533 zip code are located in Gregory 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 Gregory, SD

What EPA Radon Zone is Gregory in?

Gregory and the 57533 zip code are in Gregory 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 Gregory?

Radon mitigation in Gregory 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 Gregory?

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