According to a new study, nearly one third of homes tested in Eastern Iowa have high enough radon levels to warrant mitigation.
Linn County Public Health analyzed the results of more than 400,000 radon testing kits used in homes throughout Eastern Iowa from 1990 to 2011. Nearly every county reported averages above the Environmental Protection Agency’s “action level” of 4 picocuries per litre of air.
Radon, a naturally occurring radioactive gas, is responsible for more than 20,000 deaths per year nationwide, according to the EPA. Iowa leads the nation in radon concentration levels.