What is the harm in drinking water with radon in it?
A. The problem with radon in the well water is not so much drinking it, but breathing it. Radon in water releases itself into the air you breathe at the point of use. Showers, dishwashers, washing machines, etc. agitate or aerate water and this causes it to be released into the air and the problem becomes the same as airborne radon. 10,000 pCi/l of radon in the water will add 1.0 pCi/l to the air radon.
