Natural fluoride is a factor in building teeth. However, there are reports on the internet that the chemical industry is dumping toxic waste fluoride in drinking water in some parts of the country.[ It is very expensive to get rid of the toxic fluoride.] I do not know how to prove whether this is true or not or what measures have been taken to stop this pollution and mass medication which is supposed to be illegal in this country. If a patient needs more natural fluoride then this can be easily obtained from toothpaste or fluoride tablets. There is no plausible reason to put fluoride in drinking water and it could easily cause an overdose and is expensive for the tax-payer.