An estimated 400 deaths occur each year in Iowa due to radon induced lung cancer. That is approximately the same number of Iowans who die in traffic accidents each year. In the last half century alone, one million people in the U.S. have died from radon exposure. The average indoor radon level in Iowa is more than 6 times the national average.
US EPA surveys have confirmed that 7 out of 10 homes in Iowa contain radon concentrations above the US EPA’s radon action level of 4 pCi/L
Iowa leads the nation in the percent of homes over 4 pCi/L as well as percent of homes over 20 pCi/L.