Mason City, IA Radon Mitigation and Testing
Northern Iowa's Cerro Gordo County seat sits atop thick glacial deposits that contribute to Iowa's reputation for elevated radon levels statewide. Testing data shows an average indoor radon concentration of 5.0 pCi/L, which slightly exceeds the EPA's 4.0 pCi/L action threshold and reflects the area's geological radon risk. The prevalence of full basement foundations in zip code 50401's mix of historic and modern homes makes professional radon testing essential for all residents.
Based on 1 user-submitted radon test for homes in Mason City, IA. The EPA recommends taking action at or above 4.0 pCi/L.
Mason City, IA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Mason City, IA Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Mason City, Iowa Radon Levels
User-submitted radon test readings from homes in the Mason City area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 5 pCi/L | Mason City, IA | 21-50 Years | Full Basement | Jul 2021 |
Have a radon test result for Mason City? Submit your reading to help other homeowners.
Mason City Radon Facts
Key details about the radon risk profile for Mason City and the 50401 zip code area.
Mason City and the 50401 zip code are located in Cerro Gordo 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.