Radon in Drinking Water...
What is radon?
Radon is a gas that has no color, odor, or taste and comes from the natural radioactive breakdown of uranium in the ground. You can be exposed to radon by two main sources: (1) radon in the air in your home (frequently called "radon in indoor air") and (2) radon in drinking water. Radon can get into the air you breathe and into the water you drink. Radon is also found in small amounts in outdoor air.
Most of the radon in indoor air comes from soil underneath the home. As uranium breaks down, radon gas forms and seeps into the house. Radon from soil can get into any type of building - homes, offices, and schools - and build up to high levels in the air inside the building.