Water footprint. Ever hear this term?

I read an interesting article today in Canadian Geographic. Apparently, 2,000 liters of water are tainted in the production of one cheeseburger. Another interesting fact: Canada has the most fresh water per person. We have 7% of the world's supply and only represent .5% of the population. Much of our water is being lost to the world through shipments of grain and meat, and the Canadian government is interested in lessening loss.