If that was true, I'd have to be refilling my water tanks (I'm on 100% tank water) every fortnight or so, since I haven't had to do so at, I think that those figures are, like most things that come out of the bracks mangement commitee, over inflated hype, backed up by a media hat is afraid to either investigate or report reality.
All water is recycled, the water that you drink and bath in has been through kings and queens, scum of the earth, chemical usage, dinosaurs and other animals, in a massive cycle.