It takes 505 gallons of water to produce 1 pair of Levi's stonewashed jeans.
Reflections of glaciers on Stryn Lake, Norway, Summer 2007
This stat appears in a really interesting article on water and the cost of production, cost being the impact on natural resources. Attached to the article is a link to the U.S. Drought Monitor. The six week animation is particularly interesting. Both are provided by the National Drought Mitigation Center, University of Nebraska, Lincoln.
And as I write this, "Insight" on capradio.org is interviewing Scott Slater regarding water and drought issues. I'm reminded of the drought of 1975-77 though our population in CA and everywhere else has grown way beyond Malthus' theories.