The Public Works Department’s Sewer Maintenance Division is responsible for the Village’s two separate sewer systems: storm and sanitary. The storm sewer system collects stormwater runoff from streets and yards, downspouts, and sump pump discharges, while the sanitary sewer system collects wastewater from interior plumbing systems. The Village’s storm sewers drain either to the Skokie River and its tributary, the East Diversion Ditch, or to Lake Michigan. The Village’s sanitary sewers drain to a network of intercepting sewers operated by the Metropolitan Water Reclamation District of Greater Chicago (MWRD). These intercepting sewers convey wastewater to the North Side Treatment Plant located near Howard Street and McCormick Boulevard in Skokie, where it is treated and discharged to the North Shore Channel, and ultimately, to the North Branch of the Chicago River.
The Sewer Maintenance Division performs construction, operation, and maintenance work of these two critical Village systems. A team of the Sewer Maintenance Supervisor and four Maintenance Workers carry out these duties. Winnetka provides cleaning, maintenance, and repairs to the sanitary sewer mains, manholes, and lift stations located within the Village. This team also operates and repairs storm sewer infrastructure, including open ditches, pumping stations, catch basins, and storm sewer mains.