Harrison, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Harrison in?

Harrison is in Douglas County, EPA Zone 1.

Q: How much does radon mitigation cost in Harrison?

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

Douglas County

EPA Zone 1

Rural Douglas County in south-central South Dakota currently lacks comprehensive radon testing data, making individual home assessment essential for residents. While South Dakota's glacial geology can produce elevated radon levels in some areas, local conditions in zip code 57344 remain largely uncharacterized. Homeowners should conduct professional radon testing to establish baseline readings and ensure their indoor air quality meets EPA safety recommendations.

Harrison, SD Radon Mitigation

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

Harrison, SD Radon Testing

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

Harrison Radon Facts

Key details about the radon risk profile for Harrison and the 57344 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Douglas County, SD

Zip Code

57344

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Harrison and the 57344 zip code are located in Douglas 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 Harrison, SD

What EPA Radon Zone is Harrison in?

Harrison and the 57344 zip code are in Douglas 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 Harrison?

Radon mitigation in Harrison 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 Harrison?

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