WASHINGTON, Feb. 4 (UPI) -- An environmental engineering professor who helped uncover water contamination in Flint, Mich., told a congressional committee state and federal officials tried to cover up proof of high lead levels.
Marc Edwards, from Virginia Tech University, said Susan Hedman, the U.S. Environmental Protection Agency's former Midwest chief, and Michigan's Department of Environmental Quality dismissed information about contaminates in the city's water system.