"Fluoride is a highly toxic substance. Consider, for example, the poison warning that the FDA now requires on all fluoride toothpastes sold in the U.S. ...accidents involving over-ingestion of fluoridated dental products–including fluoride gels, fluoride supplements, and fluoridated water–can cause serious poisoning incidents, including death."[1]
"Fluoridation became an official policy of the U.S. Public Health Service by 1951, and by 1960 water fluoridation had become widely used in the U.S., reaching about 50 million people... By 2012 72% of the total U.S. population get their water from public systems that add fluoride."[2]
1. ^ Fluoride Action Network 2012.
2. ^ "Water fluoridation in the United States." Wikipedia, The Free Encyclopedia.
Additional Info/Sources: fluoridealert.org