State radon offices have a list of all radon measurement companies that are state or EPA approved. When radon testing indicates elevated radon levels, a trained contractor should be consulted to correct the problem. EPA conducts a Radon Contractor Proficiency Program to evaluate contractors' ability to reduce radon levels. The names of these contractors appear in a national listing. Trained radon reduction contractors offer their services in virtually every state.
Individuals can call the state radon office to locate a contractor.
Radon levels in homes can be reduced by preventing radon entry, increasing the ventilation within the home, and removing radon and its decay products from the air. Preventing radon entry is the preferred approach. One of the most effective techniques is ventilating the soil surrounding the home so that radon is drawn away before it can enter the home. This method is called soil depressurization. This system can be installed in an existing home, or economically installed during construction of a new home.