In her July Cerebrum article, "Drinking Water and the Developing Brain," Ellen K. Silbergeld, Ph.D., a professor in epidemiology, environmental health sciences, and health policy and management at John Hopkins University and a recipient of the MacArthur Foundation "genius" award, writes about harmful contaminants that have been identified in our drinking water and others that have yet to be evaluated, much less regulated. Her podcast examines the Clean Water Act, the calamity in Flint, Michigan, and how to uncover whether your drinking water is safe.