The United States Geological Survey (USGS), in cooperation with Massachusetts Department of Environmental Protection (MassDEP) and Massachusetts Department of Public Health (MDPH,) investigated the presence of arsenic and uranium in private bedrock water supply wells in a study area located in east central and northeastern Massachusetts. The study area was selected because existing public bedrock well records indicate that high arsenic concentrations occur in this area. Less is known about the distribution of uranium in bedrock well water. The study included uranium analysis in order to obtain a better understanding of its relationship with types of bedrock in Massachusetts.
