70 ILCS 405/26b.2
Within 30 days after such a petition has been filed with the directors they shall cause due notice to be given of a hearing upon the practicability and feasibility of creating the proposed sub-district. All interested parties shall have a right to attend such a hearing and to be heard. If it shall appear at the hearing that other lands should be included or that lands included in the petition should be excluded the directors may permit such inclusion or exclusion, provided the petition still meets the requirements of Section 26b.1. No petitioner may withdraw from the petition without the consent of a majority of the other petitioners. The directors shall adjourn the hearing to a day certain, but not sooner than 15 days nor later than 30 days. Further adjournments may be made, but only for good cause.
70 ILCS 405/26b.2