Build your own rain barrel at the Lake Mills Rain Barrel Workshop on Saturday, May 4th! Rain barrels are a great way to cut down on lawn and landscape irrigation, using free rainwater instead. This saves you money on water bills, and helps reduce demand for energy-intensive treated tap water, and limits stormwater runoff and erosion. A single 55-gallon rain barrel can save up to 1,300 gallons of water every year! Help reduce the demands placed on our watersheds and protect freshwater resources by installing your own rain barrel.