The U.S. Environmental Protection Agency’s (EPA) Watershed Academy will sponsor a free webcast on "Saving Water & Energy -- Reducing Greenhouse Gases by Improving Efficiency" on Tuesday, May 17, 2011 from 1:00 p.m. to 3:00 p.m. EDT. This webcast addresses several programs in the water sector that can help communities make small changes that can lead to big reductions in greenhouse gases.