Feb 18th 2010 11:18PM Fluoridated water is perfectly safe. These conspiracies are about on par with "birthers" and UFO nuts you see late at night on discovery channel. Fluoridation reduces cavities by about 25%, which is clearly very significant and well worth the estimated dollar per person per year that it costs. While it does cause minor marks on the teeth, such effects are not even of aesthetic concern. Your precious bodily fluids are safe for now.