Alcester, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Alcester in?

Alcester is in Union County, EPA Zone 1.

Q: How much does radon mitigation cost in Alcester?

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

Union County

EPA Zone 1

Located in Union County within the Sioux Falls metro area, this southeastern South Dakota community currently has insufficient radon testing data for the 57001 zip code. The region's glacial till deposits over Sioux Quartzite bedrock can influence radon gas migration patterns throughout the area. Homeowners should schedule professional testing, especially important for properties with basements or lower-level living spaces typical of Great Plains residential construction.

Alcester, SD Radon Mitigation

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

Alcester, SD Radon Testing

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

Alcester Radon Facts

Key details about the radon risk profile for Alcester and the 57001 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Union County, SD

Zip Code

57001

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Alcester and the 57001 zip code are located in Union 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 Alcester, SD

What EPA Radon Zone is Alcester in?

Alcester and the 57001 zip code are in Union 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 Alcester?

Radon mitigation in Alcester 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 Alcester?

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