Radon can get into the air you breathe and into the water you drink.
Radon gas can dissolve and accumulate in water from underground sources, such as wells. When water that contains radon is used in the home for showering, washing dishes, and cooking, radon gas escapes from the water and goes into the air.
Not all drinking water contains radon, only concern if your drinking water comes from underground, such as a well that pumps water from an aquifer, though not all water from underground sources contains radon.
Not all drinking water contains radon. You only need to be concerned if your drinking water comes from underground. Such as a well that is sourced from an aquifer. However your water source being underground; does not necessarily mean there is radon in it.
EPA recommends testing your drinking water for radon. If testing results show that you have high levels of radon in your drinking water and you are concerned about it. There are several options available to improve the quality of your water. The most effective treatment you can apply is to remove radon at the Point-of-Entry.