Right but I'm talking about the water in our bodies. Sure it's get's swapped out periodically but still a large percentage of the earths water is being used in the form of people.

6.5 billion, times say 130 (as an average body weight) minus the 10 to 25 percent of our bodies that isn't water equals a LOT. It might even be enough to have an impact on the earth.

But then again maybe I just smoked too much in highschool... :dunno: