EPA Region 5 Administrator Susan Hedman said, "This consent decree requires MWRD to invest in green roofs, rain gardens and other green infrastructure to prevent basement flooding in the neighborhoods that are most severely impacted by sewer overflows. The enforceable schedule established by this consent decree will ensure completion of the deep tunnel and reservoir system to control untreated sewage releases into Chicago area rivers and Lake Michigan." Ignacia Moreno, assistant attorney general for the Environment and Natural Resources Division of the Department of Justice said, "These much needed upgrades to Chicago's sewer infrastructure will reduce combined sewage overflows and the public's exposure to harmful pathogens. The use of innovative green infrastructure in the city's urban core will reduce runoff and flooding, and improve the quality of the environment where people live."
Under the settlement, the Metropolitan Water Reclamation District (MWRD) will work to complete a tunnel and reservoir plan to increase its capacity to handle wet weather events and address combined sewer overflow discharges. The project will be completed in a series of stages in 2015, 2017 and 2029. The settlement also requires MWRD to control trash and debris in overflows using skimmer boats to remove debris from the water so it can be collected and properly managed, making waterways cleaner and healthier. MWRD is also required to implement a green infrastructure program that will reduce stormwater runoff in areas serviced by MWRD by distributing rain barrels and developing projects to build green roofs, rain gardens, or use pervious paving materials in urban neighborhoods. MWRD has also agreed to pay a civil penalty of $675,000.