On August 4, 2016, the Region issued an order on consent (AOC) to the Town of Derby, Connecticut to address ongoing sanitary sewer overflows (SSOs). Since June 2, 2011, on at least four occasions, the City has discharged untreated sewage from various components of its Collection System to the Naugatuck River and the Housatonic River. EPA and the City negotiated an AOC under Section 309(a) of the Clean Water Act requiring that, in order to prevent future SSOs, the City will develop and implement a Capacity, Management, Operations, and Maintenance program and submit documentation of its program to EPA and the Connecticut Department of Energy and Environmental Protection (CT DEEP). The Region worked in close coordination with the CT DEEP in this matter.