First of all just because a water source is natural doesn't make it safe. Sea water, sulfonate rich springs, etc are bad for drinking. That there are places ar

First of all just because a water source is natural doesn't make it safe. Sea water, sulfonate rich springs, etc are bad for drinking. That there are places around the world that have high with F doesn't make it safe. There are places in the world that had catastrophically high rates of cretinism. Turns out it was a natural factor in an otherwise idyllic natural setting. I am aware that fluorine is supposed to accumulate in your teeth and doesnt in "soft" tissue; but it also accumulates in your bones and anywhere there is calcium. Bones and teeth are not dead scaffolding, but an integral part of your body's biochemical system. I should know - they gnawed a hole into my hip to get at my marrow.