Water Footprint

I was reading Lifehacker today and they linked to a chart on water use from Good Magazine. It basically shows how much water any given activity/good uses or has embedded in it's production. Fascinating stuff. I think we'll be hearing more about water footprints in the way we have about carbon footprints. If we were all looking at how much water was used in everything we would be shocked at the amount. We'd probably be mortified at how much we waste. A thorough evaluation of everything we do from a resource use perspective really needs to be done. Personally, I try to do what I can but with a chart like this I fell like a drop in the ocean. I realize a lot of people have to make the changes together to make an impact but making a differnece looks impossible.