"Energy Down the Drain: The Hidden Costs of California's Water Supply" is a seminal report on the water-energy nexus published by the Natural Resources Defense Council in partnership with the Pacific Institute in 2004. The report focuses on the energy consumed in all stages of water use--from source and conveyance to treatment, distribution, end use, and finally, watewater treatment--concluding that there are enormous opportunities to cut down on water and energy waste. Using numerous case studies in California, this report provides useful information on how to effectively save water and energy in all stages of a water system. This report is a must-read for anybody interested in the water-energy nexus. For full report, click here or on the image below.