Thor, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Thor in?

Thor is in Humboldt County, EPA Zone 1.

Q: How much does radon mitigation cost in Thor?

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

Humboldt County

EPA Zone 1

Thor sits in Humboldt County in north-central Iowa, positioned within EPA Zone 1 where glacial till deposits over limestone bedrock create high radon potential throughout the region. This small agricultural community's housing consists mainly of rural properties and farmsteads, many with basement foundations typical of Iowa construction. Without available testing data for zip code 50591, residents should prioritize radon testing to assess individual property exposure levels.

Thor, IA Radon Mitigation

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

Thor, IA Radon Testing

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

Thor Radon Facts

Key details about the radon risk profile for Thor and the 50591 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Humboldt County, IA

Zip Code

50591

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Thor and the 50591 zip code are located in Humboldt 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 Thor, IA

What EPA Radon Zone is Thor in?

Thor and the 50591 zip code are in Humboldt 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 Thor?

Radon mitigation in Thor 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 Thor?

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 Iowa

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Waterloo	8.50 pCi/L	4
Ames	9.67 pCi/L	3
Fairfield	14.00 pCi/L	2
Mount Pleasant	12.00 pCi/L	2
Ottumwa	5.50 pCi/L	2
Iowa City	7.00 pCi/L	1
Muscatine	No submissions	0