The eating your fish thread got me thinking about something I have wondered for a while. I think it was after 9/11 my wife asked me if we could drink the water in the tanks if there was some sort of natural/unnatural disaster that we were in a situation where we couldn't get any fresh water. At the time I just guessed and told her that the water in the tanks was probably better for us than the water that comes out of the faucet. But is this true? Would the water be healthy or just make you sick?