The Northfield Woods Sanitary District was formed in 1956 to serve an area in unincorporated Cook County bounded approximately by the Tri-State Tollway and Willow Road to the North, Milwaukee Avenue and the Forest Preserve District on the West, the Timber Trails and Forest Drive Subdivisions on the South and Landwehr Road on the East with sanitary sewer service. The District consists of 1,230 acres and contains approximately 1,800 homes and apartments and 400 acres of commercial property.  We now serve parts of Glenview, Northbrook, and Prospect Heights.

The are served by the District is shown in blue in the map below.

Click here to see a detailed Historical Annexation Map!