The annual challenge, April 1- 30, is a non-profit national community service campaign to see which leaders can best inspire their residents to make a series of informative and easy-to-do online pledges at mywaterpledge.com to use water more efficiently, reduce pollution, and save energy. To participate, residents enter online at mywaterpledge.com, and then make a series of online pledges to conserve water on behalf of Yorkville, IL.