Did you know that nearly every city in the U.S. is built on top of an aging and inadequate wastewater infrastructure system? When these systems fail, and all too often they do, untreated sewage and polluted stormwater gets dumped into our favorite waterways.

Chicago Rain GardenFortunately, many cities are now looking beyond what is referred to as "gray infrastructure" to find green solutions to this problem. Green infrastructure offers environmentally friendly ways to control combined sewer overflows (CSOs) and stormwater discharges.