Grafton, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Grafton in?

Grafton is in Worth County, EPA Zone 1.

Q: How much does radon mitigation cost in Grafton?

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

Worth County

EPA Zone 1

Positioned in Worth County within EPA Zone 1, Grafton sits atop glacial deposits that create elevated radon potential across north-central Iowa. While specific testing data for zip code 50440 is currently unavailable, the underlying glacial till and limestone bedrock strongly suggest the need for radon testing. This rural farming community's housing stock, predominantly featuring full basements, provides ideal conditions for radon accumulation from uranium-rich soils.

Grafton, IA Radon Mitigation

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

Grafton, IA Radon Testing

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

Grafton Radon Facts

Key details about the radon risk profile for Grafton and the 50440 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Worth County, IA

Zip Code

50440

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Grafton and the 50440 zip code are located in Worth 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 Grafton, IA

What EPA Radon Zone is Grafton in?

Grafton and the 50440 zip code are in Worth 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 Grafton?

Radon mitigation in Grafton 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 Grafton?

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