Irwin, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Irwin in?

Irwin is in Shelby County, EPA Zone 1.

Q: How much does radon mitigation cost in Irwin?

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

Shelby County

EPA Zone 1

Located in Shelby County in southwestern Iowa, Irwin sits within EPA Zone 1 where the region's glacial till deposits and underlying limestone bedrock create high radon potential across the agricultural landscape. Testing data for the 51446 area remains limited, making individual home testing essential for residents in this rural community. Iowa's characteristic loess soils over Pennsylvanian limestone can produce significant radon concentrations, particularly in homes with basements.

Irwin, IA Radon Mitigation

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

Irwin, IA Radon Testing

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

Irwin Radon Facts

Key details about the radon risk profile for Irwin and the 51446 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Shelby County, IA

Zip Code

51446

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Irwin and the 51446 zip code are located in Shelby 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 Irwin, IA

What EPA Radon Zone is Irwin in?

Irwin and the 51446 zip code are in Shelby 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 Irwin?

Radon mitigation in Irwin 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 Irwin?

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