James Reeves - You are off on another tangent of fabrication -

You demonstrate a complete lack of credibility.  You claim in this comment section (and others) that, "Fluoridation causes enamel damage ... in 41% of all children ... and has also been shown to lower IQ in children with 50 research studies. Now it has been proven to cause ADHD, as reported in the 'Journal of Environmental Health'...".

You have been completely unable to provide specific quotes from any papers that in any way prove fluoridation causes any of those problems because you (or those who feed you your propaganda) have completely fabricated the claims.

Your hydrofluorosilicic acid claims are also false.  Fluoride ions from hydrofluorosilicic acid are no different from naturally occurring fluoride ions.  You fabricate yet another unsupported claim.  
Environ Sci Technol. 2006 Apr 15;40(8):2572-7. Reexamination of hexafluorosilicate hydrolysis by 19F NMR and pH measurement. Finney, et al.