Guernsey, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Guernsey in?

Guernsey is in Poweshiek County, EPA Zone 1.

Q: How much does radon mitigation cost in Guernsey?

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

Poweshiek County

EPA Zone 1

Situated in Poweshiek County among Iowa's rolling glacial hills, Guernsey represents small-town Iowa with its mix of early 1900s farmhouses and mid-century ranch homes. The community sits atop glacial till deposits over limestone bedrock, geological conditions that can facilitate radon migration into homes with basements. Since radon testing data for zip code 52221 is not currently available, residents should consider testing given Iowa's generally elevated radon potential statewide.

Guernsey, IA Radon Mitigation

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

Guernsey, IA Radon Testing

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

Guernsey Radon Facts

Key details about the radon risk profile for Guernsey and the 52221 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Poweshiek County, IA

Zip Code

52221

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Guernsey and the 52221 zip code are located in Poweshiek 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 Guernsey, IA

What EPA Radon Zone is Guernsey in?

Guernsey and the 52221 zip code are in Poweshiek 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 Guernsey?

Radon mitigation in Guernsey 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 Guernsey?

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