I don't think it is bad, but I am skeptical about floride in water, but it's impossible to live some pure existence in this world.  I mean, you'd have to stop using shampoo, you name it.

I guess the key is to balance out the toxins with healthy stuff.  For instance, the water I bathe in might be toxic and also the shampoo, but I try to eat fresh vegetables every day and from the color of my urine (clear), it's having good effects.