Radon is a naturally occurring tasteless, odorless, and colorless gas that's created by the radioactive breakdown of uranium. It can get into the air you breathe and the water you drink. Radon enters your well by dissolving and accumulating into ground water. When water used for cooking, washing, cleaning and drinking is contaminated, the gas escapes into the air, much like carbonated drinks release CO2 when opened. Fortunately, there are steps you can take to mitigate the problem.