Concerns about the impact on water from biofuels production have been voiced before and are becoming louder. A little more than a year ago, then U.S. Department of Interior Secretary Dick Kempthorne, stated: “To reach our ethanol production target of 7.5 billion gallons per year by 2012 will require 30 billion gallons of water a year to process, or the amount of the annual water needs of Minneapolis, Minn. And if just 25 percent of the new corn crop requires irrigation, ethanol will demand more water than the combined annual usage of all cities in Arizona, Colorado, Idaho and Nevada. As we increase ethanol production, we must have a holistic approach that takes into account its impact on water supply.”