The Metropolitan Water Reclamation District is offering discounted rain barrels for Wilmette, Illinois, to help prevent flooding and save money on their water bills. The barrels capture rainwater, which can be reused for cleaning, can hold up to 55 gallons of water and can be used as a free reserve of clean water. According to the Illinois Department of Natural Resources, 15 percent of the state's total land area is at risk of flooding. The discounted rain barrel can be ordered at the department's website.