How can people be exposed to radon?
Radon is found at higher levels in indoor air in homes, schools, and office buildings. Cracks in the basement or foundation of a home can allow higher levels of radon inside the home. Indoor radon levels are affected by the radium and uranium levels in soil, how absorbent the soil is, the composition and condition of the foundation materials, and the ventilation rate of the room. Radon also is found in drinking water and can be higher in well water.
