What is the primary source of radon gas in residential areas?

Radon soil gases are the primary source of radon gas in residential areas. Radon is a naturally occurring radioactive gas that originates from the decay of uranium found in soil and rock. As radon escapes from the ground, it can enter homes and buildings through cracks in foundations, gaps around pipes, and other openings. This makes soil gases the most significant contributor to indoor radon levels.

While radon can also be found in the air, emitted from water, and potentially released from certain building materials, the vast majority of radon that accumulates in homes comes from the soil beneath the structure. This is particularly true in areas with high uranium content in the soil, which can result in higher concentrations of radon gas. Understanding this primary source is crucial for effective radon mitigation strategies in residential areas.