Rain gardens are not only aesthetically pleasing, they also create a habitat for birds, butterflies and other insects that help control mosquito populations. Rain gardens mitigate the impacts of urban development. They infiltrate and cleanse storm water runoff from impervious surfaces, such as roofs, driveways and sidewalks before the runoff contaminates local water systems and drinking water supplies. This direct contaminated runoff threatens habitat and children that use local waterways to play and discover. Rain gardens remove the risk of water traveling onto neighboring yards. Installing a rain garden is a way for residents to contribute to the quality of watersheds on a local scale that affects a grander scheme.