Massachusetts

According to the Massachusetts Department of Public Health (MDPH), radon gas is a prevalent problem in the state. The state has a high incidence of radon, with 1 in 3 homes in Massachusetts having elevated levels of radon gas. Elevated levels of radon gas can cause lung cancer, and it is the leading cause of lung cancer in non-smokers. The MDPH recommends that all homeowners in Massachusetts test their homes for radon gas. If elevated levels of radon are detected, homeowners should consider installing a radon mitigation system to reduce the levels of radon in their homes. The MDPH provides information and resources to help homeowners and residents of Massachusetts understand the risks associated with radon gas and take steps to protect themselves and their families. The MDPH website has information on how to test for radon gas, how to reduce radon levels, and how to find a qualified radon mitigation professional in Massachusetts. 

United States EPA State Map of Radon Gas Concentration

The U.S. EPA and the U.S. Geological Survey have evaluated the radon potential in the U.S. and have developed this map is to assist National, State, and local organizations to target their resources and to assist building code officials in deciding whether radon-resistant features are applicable in new construction. This map is not intended to be used to determine if a home in a given zone should be tested for radon. Homes with elevated levels of radon have been found in all three zones. All homes should be tested regardless of geographic location. The map assigns each of the 3,141 counties in the U.S. to one of three zones based on radon potential. Each zone designation reflects the average short-term radon measurement that can be expected to be measured in a building without the implementation of radon control methods. The radon zone designation of the highest priority is Zone 1.

zone 1 Zone 1 Highest Potential (greater than 4 pCi/L)
zone 2 Zone 2 Moderate Potential (from 2 to 4 pCi/L)
zone 3 Zone 3 Low Potential (less than 2 pCi/L)

Massachusetts Zone Map