What is radon? Radon is a radioactive gas that comes from the natural decay and breakdown of uranium that is found in nearly all soils. The United States Environmental Protection Agency offers a substantial amount of information relating to radon, its health risks, and radon mitigation here: http://www.epa.gov/radon/index.html. Who is responsible for mitigating radon when it is found to be at unsafe levels in a community association? Of course, it depends. Although radon testing recently has become fairly commonplace in real estate transactions, case law relating to radon mitigation in community associations has not yet percolated from the courts. read more