Crooks, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Crooks in?

Crooks is in Minnehaha County, EPA Zone 1.

Q: How much does radon mitigation cost in Crooks?

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

Minnehaha County

EPA Zone 1

Nestled in Minnehaha County within the Sioux Falls Metro area, Crooks sits in EPA Zone 1 where South Dakota's glacial deposits and underlying Sioux Quartzite create significant radon potential. With limited testing data for zip code 57020, homeowners should prioritize radon measurements given the geological conditions. The area's suburban development pattern and basement construction typical of the northern plains facilitate radon accumulation in below-grade living spaces.

Crooks, SD Radon Mitigation

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

Crooks, SD Radon Testing

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

Crooks Radon Facts

Key details about the radon risk profile for Crooks and the 57020 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Minnehaha County, SD

Zip Code

57020

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Crooks and the 57020 zip code are located in Minnehaha 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 Crooks, SD

What EPA Radon Zone is Crooks in?

Crooks and the 57020 zip code are in Minnehaha 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 Crooks?

Radon mitigation in Crooks 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 Crooks?

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