Barnum, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Barnum in?

Barnum is in Webster County, EPA Zone 1.

Q: How much does radon mitigation cost in Barnum?

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

Webster County

EPA Zone 1

Located in Webster County in north-central Iowa, Barnum sits in EPA Zone 1 where glacial till deposits over limestone bedrock commonly produce radon levels exceeding the EPA action threshold. Iowa's agricultural region features predominantly older farmhouses and newer rural construction, most with full basements that can trap radon gas. Testing data for zip code 50518 remains limited, making professional radon testing crucial for determining individual home risk levels.

Barnum, IA Radon Mitigation

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

Barnum, IA Radon Testing

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

Barnum Radon Facts

Key details about the radon risk profile for Barnum and the 50518 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Webster County, IA

Zip Code

50518

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Barnum and the 50518 zip code are located in Webster 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 Barnum, IA

What EPA Radon Zone is Barnum in?

Barnum and the 50518 zip code are in Webster 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 Barnum?

Radon mitigation in Barnum 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 Barnum?

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