This report, published by the EPA in March 2008, provides some of the most recent data on the amount of water and energy that can be saved with existing technologies and expanded programs. The report concludes that while significant amounts of water and energy have been saved through conservation and efficiency programs, the implementation of a national program, such as the EPA's new WaterSense initiative, would greatly increase savings.

Through an analysis of current and historic water use in the United States, "the goal of this report is to illustrate the co-benefits of water and energy efficiency programs and summarize the current and future opportunities to be pursued under the ENERGY STAR and Water Sense programs to save both energy and water." This report provides one of the best attempts to quantify water and energy savings through various efficiency techniques. To read the full report, click here (PDF, 935 KB) or on the image below.