70 ILCS 2205/2
Upon the filing of such petition in the office of the circuit clerk of said county it shall be the duty of the court to consider the boundaries of such proposed district, whether the same shall be described in said petition or otherwise. Four weeks' notice shall be given by the court of the time and place where such boundaries will be considered, by publication in one or more newspapers published in each of said counties. At such hearing all persons in the proposed sanitary district shall have an opportunity to be heard touching the location and boundary of such proposed district; and after hearing such evidence and suggestions as may be offered, the court shall fix and determine the limits and boundaries of said proposed district, and for that purpose, and to that extent, may alter and amend such petition.
70 ILCS 2205/2