Radon is a colorless, tasteless, radioactive gas. It occurs naturally and is produced by the breakdown of uranium in soil, rock, and water. It can also dissolve into your water supply. Radon can be removed from water by using one of two methods:
Aeriation treatment – spraying water or mixing it with air and then venting the air from the water before use, or
GAC treatment – filtering water through granular activated carbon. Radon attaches to the carbon and leaves the water free of radon. Disposing of the carbon may require special handling if it is used at a high radon level or if it has been used for a long time.