Humboldt, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Humboldt in?

Humboldt is in Minnehaha County, EPA Zone 1.

Q: How much does radon mitigation cost in Humboldt?

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

Part of the Sioux Falls Metro area in Minnehaha County, Humboldt occupies EPA Zone 1 territory where radon testing data collection continues. The region's glacial geology over sedimentary formations can produce variable radon conditions across different properties. Local homeowners in zip code 57035 should pursue professional radon measurement to understand their specific exposure levels.

Humboldt, SD Radon Mitigation

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

Humboldt, SD Radon Testing

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

Humboldt Radon Facts

Key details about the radon risk profile for Humboldt and the 57035 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Minnehaha County, SD

Zip Code

57035

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Humboldt and the 57035 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 Humboldt, SD

What EPA Radon Zone is Humboldt in?

Humboldt and the 57035 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 Humboldt?

Radon mitigation in Humboldt 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 Humboldt?

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