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UK Against Fluoridation

Wednesday, July 12, 2017

Australia - Four myths about water fluoridation and why they’re wrong

What is the Difference Between Natural Fluoride and the Kind That is Artificially Added to Our Water Supply? |... http://fb.me/308yYJL8N 
The type of fluoride commonly found in many rocks and the source of the naturally occurring fluoride ion in water supplies is calcium fluoride.
The three main fluoride compounds generally used to fluoridate water are: sodium fluoridehydrofluorosilicic acid (hexafluorosilicic acid) and sodium silicofluoride. All these fully mix (dissociate) in water, resulting in the availability of fluoride ions to prevent tooth decay.

So regardless of the original compound source, the end result is the same – fluoride ions in the water...................................

What about the 2% of the hundreds of tonnes poured into the water each year? It isn't just ions you end up with.

The UK's Water (Fluoridation) Act 1985, since incorporated into the 1991 Water Industry Act, allows hexafluorosilicic acid (H2SiF6) and disodium hexafluorosilicate (Na2SiF6) to be used to increase the fluoride content of water. The published Code of Practice on Technical Aspects of Fluoridation of Water Supplies (Department of the Environment, 1987) gives specifications for these substances and states that 'the product. ..must not contain any mineral or organic substances capable of impairing the health of those drinking water correctly treated with the product'. For H2SiF6, limits are given for a number of possible impurities, including for iron, heavy metals, sulphate, phosphate, and chloride. The specification for Na2SiF6 powder requires a minimum of 98% m/m of the pure chemical, and gives maximum limits for impurities, including heavy metals (as lead) and iron. No other substances are allowed to be used in the fluoridation process, other than an anti-caking agent (the identity of which must be disclosed) in the case of Na2SiF6. Synthetic detergents are not permitted. 

Thus there is no likelihood, in normal operation, for any fluoridation plants to introduce other compounds into the drinking water supply (other than approved anti-cakinq aqents and any impurities present in the fluoridation chemicals). 


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