As stated by the US EPA, “green infrastructure is a cost-effective, resilient approach to managing wet weather impacts that provides many community benefits. While single-purpose gray stormwater infrastructure—conventional piped drainage and water treatment systems—is designed to move urban stormwater away from the built environment, green infrastructure reduces and treats stormwater at its source while delivering environmental, social, and economic benefits.”
City of Tucson, Watershed Management Group, & Pima County Regional Flood Control District. (2015, May). Solving Flooding Challenges with Green Stormwater Infrastructure in the Airport Wash Area
Conservation Economics Institute. (2015, October). Green Stormwater Infrastructure Economics
US Environmental Protection Agency. (2015, November). Green Infrastructure.