Onslow, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Onslow in?

Onslow is in Jones County, EPA Zone 1.

Q: How much does radon mitigation cost in Onslow?

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

Jones County

EPA Zone 1

Part of the Cedar Rapids metropolitan area in Jones County, Onslow sits over Iowa's characteristic glacial deposits and limestone bedrock that contribute to the state's elevated radon potential. The area's housing reflects typical eastern Iowa construction with most homes featuring full basements where naturally occurring radon gas can accumulate. While specific radon testing data for zip code 52321 is still being compiled, the geological conditions warrant regular radon testing for all area residents.

Onslow, IA Radon Mitigation

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

Onslow, IA Radon Testing

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

Onslow Radon Facts

Key details about the radon risk profile for Onslow and the 52321 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Jones County, IA

Zip Code

52321

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Onslow and the 52321 zip code are located in Jones 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 Onslow, IA

What EPA Radon Zone is Onslow in?

Onslow and the 52321 zip code are in Jones 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 Onslow?

Radon mitigation in Onslow 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 Onslow?

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