70 ILCS 2605/112
As of July 18, 1947, the corporate limits of the Sanitary District of Chicago are hereby extended so as to embrace and include within the same territory and tracts of land situated in the County of Cook and State of Illinois, not now in the Sanitary District of Chicago, described as follows:
The North East Quarter, the North West Quarter and the South West Quarter, of Section 26; the South East Quarter of Section 27 and that part lying South and East of the Joliet and Chicago Railroad, of the East Half (E1/2) of the North East fractional quarter (1/4) of Section 27; the North East Quarter of Section 34; the North West Quarter of Section 35; all in Township 38 North, Range 12 East of the Third Principal Meridian in Cook County, Illinois.
70 ILCS 2605/112