Radon Testing Jefferson County Mo Voyage

I have spent years working with homeowners across the St. Louis region, and if there is one invisible threat that consistently gets overlooked, it is radon. Jefferson County, Missouri, sits on geology that makes it prone to elevated radon levels. The USGS maps and local health department data have shown this for decades. Yet every spring I still talk to families in Arnold, Festus, High Ridge, and Hillsboro who never tested their basements. They assume that because the house