70 ILCS 2805/32a
Additional contiguous territory within the limits of the county and within or without the limits of any city, village or incorporated town except territory within the limits of any city, village or incorporated town that furnishes or provides sanitary sewer service may be added to any sanitary district organized under this Act in the manner following:
Ten per cent or more of the legal voters resident within the limits of such proposed addition to such sanitary district may petition the circuit court for the county in which the original petition for the formation of the sanitary district was filed, to cause the question to be submitted to the legal voters of such proposed additional territory whether such proposed additional territory shall become a part of any contiguous sanitary district organized under this Act and whether such additional territory and the taxpayers thereof shall assume a proportionate share of the bonded indebtedness, if any, of such sanitary district. Such petition shall be addressed to the court and shall contain a definite description of the boundaries of the territory sought to be added.
Upon filing the petition in the office of the circuit court clerk of the county in which the original petition for the organization of such sanitary district was filed it is the duty of the court to consider the boundaries of the proposed additional territory and such decision shall be appealable as in other civil cases.
Notice shall be given by the court of the time and place when and where all persons interested shall be heard substantially as provided in Section 1 of this Act. The conduct of the hearing on the question whether the proposed additional territory becomes a part of such sanitary district shall be, as nearly as possible, in accordance with the provisions of Section 1 of this Act; the court shall certify the question to the proper election officials who shall submit the question at an election in accordance with the general election law. The question shall be in substantially the following form:
------------------------------------------------------------------------ For joining sanitary district and assuming a proportionate share of bonded indebtedness, if any. ------------------------------------------------------------------------ Against joining sanitary district and assuming a proportionate share of bonded indebtedness, if any. ------------------------------------------------------------------------
If a majority of the votes cast on the question shall be in favor of becoming a part of such sanitary district and if the trustees of such sanitary district accept the proposed additional territory by ordinance annexing the same, the court shall enter an appropriate order of record in the court, and such additional territory shall thenceforth be deemed an integral part of such sanitary district. In addition to the manner heretofore provided, any such additional contiguous territory may be annexed to such sanitary district upon petition addressed to the circuit court, signed by a majority of the owners of lands constituting such territory who, in the case of natural persons, have arrived at lawful age and who represent a majority in area of such territory. The petition shall contain a definite description of the boundaries of such territory and shall set forth the willingness of the petitioners that such territory and the taxpayers thereof assume a proportionate share of the bonded indebtedness, if any, of such sanitary district. Upon the filing of such petition and notice of and hearing and decision upon the same by the court, the court shall enter an order containing the findings and decision as to the boundaries of the territory to be annexed. If the trustees of such sanitary district pass an ordinance annexing the territory described in such order to the sanitary district, the court shall enter an appropriate order, and such additional territory shall thenceforth be deemed an integral part of such sanitary district.
70 ILCS 2805/32a