Norris, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Norris in?

Norris is in Mellette County, EPA Zone 2.

Q: How much does radon mitigation cost in Norris?

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

Mellette County

EPA Zone 2

Located in south-central South Dakota's Mellette County, Norris sits in EPA Zone 2 where Pierre Shale formations can create moderate radon potential across the Great Plains. Testing data for zip code 57560 remains limited, so homeowners should conduct radon measurements to assess their specific risk in this sparsely populated prairie region.

Norris, SD Radon Mitigation

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

Norris, SD Radon Testing

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

Norris Radon Facts

Key details about the radon risk profile for Norris and the 57560 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Mellette County, SD

Zip Code

57560

Predicted Screening Level

2–4 pCi/L (Zone 2)

Norris and the 57560 zip code are located in Mellette 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 Norris, SD

What EPA Radon Zone is Norris in?

Norris and the 57560 zip code are in Mellette 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 Norris?

Radon mitigation in Norris 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 Norris?

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