Peggy

It is unclear to whom you refer as being “you people”, unless you mean the worldwide body of respected science and healthcare.  In that case:

1.  As commonly ingested substances such as aspartame, ethanol, aspirin, and caffeine are classified as neurotoxins on the same list with fluoride, it is unclear why you are singling out fluoride for your “concern”.  Nonetheless, to answer your question, the US EPA deems 4.0 ppm fluoride in drinking water to be a safe level.

2.  Fluoridated water at the tap contains no detectable contaminants when fluoridated with HFA at the manufacturer’s recommended single use amount. A complete list of the contents of fluoridated water may be found on the Fluoridation Substance Fact Sheet on the website of NSF Intern’l.

3.  Fluoridation is based on the most current, up-to-date science available.  Antifluoridationists are the ones relying on 50 year old quotes, long since discredited studies, and decades-old misinformation.  

Steven D. Slott, DDS