Radon Data for Property ManagementMonitoring. Management. Mitigation.
ATTOM’s Radon Hazard Data Mitigates Risk
Radon is a radioactive gas and carcinogen that enters homes through contact points with the ground. Radon levels vary from household to household. ATTOM’s radon hazard data shows the measured radon levels in U.S. homes at the county level and by state, sourced from the U.S. Environmental Protection Agency (EPA). Are you living in a radon zone?
- Zone 1 counties have predicted average indoor radon screening level greater than 4 pCi/L (picocuries per liter)
- Zone 2 counties have predicted average indoor radon screening level greater than 4 pCi/L (picocuries per liter)
- Zone 3 counties have predicted average indoor radon screening level less than 2 pCi/L (picocuries per liter)
Nearly one out of every 15 homes has a radon level 4 pCi/L or greater, which the EPA considers elevated. The U.S. average radon-in-air level in single family homes is 1.3 pCi/L. The EPA recommends mitigation measures for homes if an occupant’s long-term exposure will average 4 picocuries per liter (pCi/L) or higher.
ATTOM Radon Data
With ATTOM’s radon risk data, property owners and developers in radon zones can decide whether they should take mitigation measures. For example, increasing under-floor ventilation, installing a radon sump system in the basement or under a solid floor; sealing floors and walls; or improving ventilation.
How Can You Use ATTOM’s Radon Risk Data?
Homebuyers, investors, and their representatives need accurate radon zone map data when considering a property acquisition. ATTOM shows radon risk down to individual property listings.