Flint, Michigan, outside of Detroit, is having a serious crisis about lead in water, which is catastrophically toxic to fetuses, infants, and developing children. It can cause serious brain damage for them – and is merely very unhealthy for everyone else.
Here are a couple of articles about lead in water – about how the Centers for Disease Control lied to the public about lead in water in D.C., and about how even a few years ago there may have been lead in D.C. water.