I don't know for sure that it's toxic/unhealthy/etc but, to me, this is one of those "pick and choose my battles" issues. The air quality where I live is like a nuclear haze for several months a year and while I hydrate from non-fluoridated sources in addition to my tap water, I can't help but breath the air around me. In other words, I'm more worried about air quality and affecting change there than convincing "authorities" to stop fluoridating water (though I must admit I find the undertones of fluoride conspiracy theory fascinating). I do *wish* I had the choice to medicate with fluoride, but *wishing* is as far as I'm going to go to change things...