Radon Testing Jefferson County Mo Lantern

Why Radon Testing Matters in This Region Jefferson County sits on some of the most geologically interesting ground in Missouri. The USGS maps show a mix of limestone, dolomite, and shale formations underneath towns like Arnold, Festus, High Ridge, and Hillsboro. Those rock layers are the main reason radon shows up in homes here. Radon forms when uranium in the soil decays, and the gas moves up through cracks in the foundation. It is invisible and has no smell, so the only