Griswold, IA Radon Mitigation and Testing
Griswold sits in Cass County within Iowa's Omaha Metro area, where glacial soils and underlying bedrock geology contribute to significant radon potential. Current testing data shows an average radon level of 20.0 pCi/L, which substantially exceeds the EPA's 4.0 pCi/L action level and indicates immediate mitigation is strongly recommended. The community's housing stock, typical of rural Iowa with many homes featuring full basements, provides enclosed spaces where radon can concentrate to dangerous levels in zip code 51535.
Based on 1 user-submitted radon test for homes in Griswold, IA. The EPA recommends taking action at or above 4.0 pCi/L.
Griswold, IA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Griswold, IA Radon Testing
Finding qualified radon testing professionals is the first step toward protecting your home.
Griswold, Iowa Radon Levels
User-submitted radon test readings from homes in the Griswold area.
| Radon Level | City | Home Age | Foundation | Submitted |
|---|---|---|---|---|
| 20 pCi/L | Griswold, IA | 0-20 Years | Full Basement | Mar 2025 |
Have a radon test result for Griswold? Submit your reading to help other homeowners.
Griswold Radon Facts
Key details about the radon risk profile for Griswold and the 51535 zip code area.
Griswold and the 51535 zip code are located in Cass 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.