Dedham, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Dedham in?

Dedham is in Carroll County, EPA Zone 1.

Q: How much does radon mitigation cost in Dedham?

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

Carroll County

EPA Zone 1

Positioned in Carroll County in west-central Iowa's prairie region, Dedham falls within EPA Zone 1 where glacial till over limestone bedrock creates high radon potential. The rural agricultural setting features primarily older farmhouses and newer residential properties, many with full basements typical of Iowa construction. Since testing data for zip code 51440 remains limited, homeowners are strongly encouraged to test for radon to determine their individual exposure risk.

Dedham, IA Radon Mitigation

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

Dedham, IA Radon Testing

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

Dedham Radon Facts

Key details about the radon risk profile for Dedham and the 51440 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Carroll County, IA

Zip Code

51440

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Dedham and the 51440 zip code are located in Carroll 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 Dedham, IA

What EPA Radon Zone is Dedham in?

Dedham and the 51440 zip code are in Carroll 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 Dedham?

Radon mitigation in Dedham 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 Dedham?

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