Nope, more of a body-demand than a mouth thirst, actually.
I've always drunk four or five times what others drink. Part of me, it is. I only drink extremely pure, prepared water or distilled water (since my twenties) in quantity, so don't worry. I won't have kidney stones like nearly a fifth of the population of the Ohio River watershed. I never drink the tap water.
Don't get me wrong, I can't drink alcohol, much.