Why is Fluoride in our Drinking Water?

I copied the following directly from the net, as I feel it is so important to know this information. Both Stalin and Hitler medicated the inmates of their gulags and concentration camps with this stuff, and for many years it has been in 60 percent of American drinking water, and is now being pushed in Australia too.

"Controversial fluoride is one of the basic ingredients
in both PROZAC (FLUoxetene Hydrochloride) and Sarin
nerve gas (Isopropyl-Methyl-Phosphoryl FLUoride).

Sodium fluoride, a hazardous-waste by-product from
the manufacture of aluminum, is a common ingredient
in rat and cockroach poisons, anesthetics, hypnotics,
psychiatric drugs, and military nerve gas. It's
historically been quite expensive to properly dispose
of, until some aluminum industries with an overabundance
of the stuff sold the public on the terrifically insane
but highly profitable idea of buying it at a 20,000%
markup, injecting it into our water supplies, and then
DRINKING it. Yes, a 20,000% markup: Fluoride--
intended only for human consumption by people
under 14 years of age--is injected into our drinking
water supply at approx. 1 part-per-million (ppm), but
since we only drink 1/2 of one percent of the total
water supply, the rest literally goes down the drain
as a free hazardous-waste disposal for the chemical
industry, where we PAY them so that we can flush their
expensive hazardous waste down our toilets. How many
salesmen dream of such a deal? (Follow the money!)"