Winterset, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Winterset in?

Winterset is in Madison County, EPA Zone 1.

Q: How much does radon mitigation cost in Winterset?

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

Madison County

EPA Zone 1

Famous as John Wayne's birthplace, Winterset in Madison County sits on Iowa's glacial till deposits over limestone bedrock within the Des Moines Metro area. The community features a mix of historic Victorian homes and modern suburban construction, with many properties having full basements typical of Iowa residential architecture. Limited testing data exists for zip code 50273, making individual home testing essential given Iowa's geological conditions and the EPA's strong recommendation for basement radon monitoring.

Winterset, IA Radon Mitigation

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

Winterset, IA Radon Testing

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

Winterset Radon Facts

Key details about the radon risk profile for Winterset and the 50273 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Madison County, IA

Zip Code

50273

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Winterset and the 50273 zip code are located in Madison 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 Winterset, IA

What EPA Radon Zone is Winterset in?

Winterset and the 50273 zip code are in Madison 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 Winterset?

Radon mitigation in Winterset 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 Winterset?

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