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EPA Admits to Having No Studies on the Health Effects of Silicofluorides: Letter from EPA's Robert Thurnau to Roger Masters, November 16, 2000. The Environmental Protection Agency (EPA) admits that they do not have studies concerning the health effects of silicofluorides—why is it still being added to our water supply?
In 1983, Rebecca Hanmer, the Deputy Assistant Administrator for Water at the US Environmental Protection Agency, described the policy of using the phosphate industry's silicofluorides for fluoridation as follows: "In regard to the use of fluosilicic acid as the source of fluoride for fluoridation, this agency regards such use as an ideal solution to a long standing problem. By recovering by-product fluosilicic acid from fertilizer manufacturing, water and air pollution are minimized, and water authorities have a low-cost source of fluoride available to them."
In 2011, an Australian independent researcher wrote to the Therapeutic Goods Administration asking
if silicofluorides, as used in Australia, have been properly tested for long-term safety in humans. An extract of their response is listed below (nb. The same researcher also established that, according to the TGA’s own 2011 guidelines, silicofluorides – as used and promoted in Australia – are indeed required to be evaluated by the TGA, despite the Health Department’s claim to the contrary):
Date: Wed, Mar 9, 2011 at 8:15 AM
Subject: Re: ATTN: TGA - product approval inquiry [SEC=UNCLASSIFIED]
To: <name removed>:
“Essentially before a therapeutic good can be supplied in Australia it must be included on the Australian Register of Therapeutic Goods (ARTG), unless otherwise exempt from this requirement. In order for a therapeutic good to appear on the ARTG, a sponsor (i.e. the individual or company intending to supply the goods) must present a dossier of data covering the quality, safety and effectiveness of the product in question. This submission is evaluated by the TGA and if approved, the therapeutic good is added to the ARTG and can be commercially supplied in Australia for an approved indication. The products you have itemised [HYDROFLUOROSILICIC ACID & SODIUM FLUOROSILICATE] in your email do not appear on the ARTG nor do they appear to be ingredients of any products listed on the ARTG. As these products have not been evaluated by the TGA for quality safety or effectiveness we are unable to provide you with the information you seek...”
In April 2000, Dr. Hardy Limeback, BSc, PhD, DDS, of the University of Toronto, wrote the following words in a document titled ‘Why I am now officially opposed to adding fluoride to drinking water’: “Hydrofluorosilicic acid is recovered from the smokestack scrubbers during the production of phosphate fertilizer... Fluorosilicates have never been tested for safety in humans. Furthermore, these industrial-grade chemicals are contaminated with trace amounts of heavy metals such as lead, arsenic and radium that accumulate in humans... Long-term ingestion of these harmful elements should be avoided altogether.“
Former EPA senior scientist, Robert J Carton, PhD: “The Maximum Contaminant Level Goal for fluoride in drinking water should be zero.”