This isn't really a right-wing wackadoo thing (or at least not exclusively).
Portland, OR hasn't put fluoride in their drinking water for a VERY long time, with many people citing the fact that they don't want the pristine Bull Run water source tainted.
If you use fluoridated (or even nanosilver particle) toothpaste and/or mouth wash, there isn't really any logical reason to also have it in your drinking water, right?
I'm sure they are, but that's not my point. I'm just saying that it's not really medically necessary to flouridate water when fluoridated toothpaste and other treatments are so readily available