Fluoridation is state mandated in Illiniois: "Dr. Souri juggles work here with a suburban practice and routinely sees 2- and 3-year-olds with as many as 20 cavities. On a day I visited, he dealt with a boy, 6, who needed four fillings because he drank too much soda, and a girl, 7, who had 10 cavities."

http://www.nytimes.com/2009/12/04/us/04cncwarren.html?_r=1&src=tptw