According to this this site:
So what is the straight dope on this. Is flourinated water safe for consumption? Or is this article overblown hysteria?
Oh, I forgot to add another link about flouride poisoning
This stuff has me very concerned.
I do not have realy information on the real issues with flouride as a possible health hazzard. I did, however, wish to be the first person to mentiont that, apparently, it also causes The Gay.
Insert gratuitous comment about Purity Of Essence and Precious Bodily Fluids here.
I’m off to have my grain alcohol and rain water now.
Damn, beaten to the punch.
We’ll meet again, don’t know where, don’t know when…
Back in the '50s, those that were against flouride being put in water supplies said that it was a Communist Conspiracy. Looks like they are still singing their song and just changed the lyrics.
Don’t really have much to add, but at 34 I have never had a cavity in my life. I have always had flourinated water. 
Certainly- Flourine- when concentrated- is very deadly stuff. However- so is Clorine, and they add that routinely with hardly a murmur from the looney-toons.
And hell- Sodium is explosive under the right circumstances, and they used Chlorine gas to kill dudes in WWI. But Sodium Chloride is table salt. Not that enough of that won’t kill you too.
In fact- enough DiHydrogen Oxide (H2O, aka “water”) will kill you.
Just about anything is poisonous/dangerous given a high enough dose.
So- dudes talking about how dangerous "x’ is at high dosages and/or concentrations are lying to you with alarmist nonsense.
At the dosages they put into drinking water- Flouride is completely safe. True, I admit that I wouldn’t want to be a worker at the water plant and spill a tank of it on me- but I would want the same with Chlorine, either. So- unless you’re a clumsy water company worker- Flourine is completely safe as a additive in your drinking water. Only the “loony-toon brigade” thinks otherwise.
Just to nitpick, there is a big difference between elemental fluorine, elemental chlorine, and elemental sodium; and fluoride ion, chloride ion, and sodium ion. The latter are all stable. The former are very reactive and harmful. Chemically speaking, fluorine and fluoride [ion] are completely different substances.
They don’t fluorinate the water; they fluoridate it.
Incidentally, the author of the nutty article linked to in the OP does not discriminate between fluoride and fluorine, either, when she states that “dermal and pulmonary absorption of F are far more efficient routes than ingestion by mouth, as was demonstrated over a half century ago by the Nazis during their experimentation with lethal, fluorinated nerve gases.” Fine, but what does this have to do with the very low concentration of fluoride added to public water supplies?
Oh, and with respect to the OP, there are literally thousands of substances besides fluoride that are ubiquitous in the modern environment, many of which already have strong evidence showing them to be harmful, including PCBs, mercury, lead, VOCs, SVOCs, and substances which mimic the action of hormones, such as some plasticizers.
Why are you so concerned about fluoride?
Accipiter1, I have shortened your quotation. Generally, quoting more than a paragraph or two of a copyrighted work is too much.
bibliophage
moderator GQ
Cecil Adams on Can water be too pure? Is too much water bad for you?
Here’s what I know: My mom (last generation): fillings in most of the molars. Me: One filling, total.