New insights on worldwide water consumption
Engineers Arjen Y. Hoekstra and Mesfin M. Mekonnen of the University of Twente in the Netherlands gave new insights on worldwide water consumption. China and India are leading consumers, followed by US, Brazil and Russia. On top ten scale are Indonesia, Pakistan, Mexico, Japan and Nigeria. A vast amount of water is used to produce the food and products that nations consume. Large population is the greatest factor, but inefficient agriculture or dependence on water-intensive cuisine can exacerbate demand; meat consumption accounts for 30 percent of the U.S. water footprint
This article offers some interesting statistics about this topic. It is a year old, but considering they are making predictions I guess it doesn't matter.
http://greencleanguide.com/2011/07/19/water-scarcity-and-india/