65 ILCS 5/9-2-17
When a petition is filed, a certified copy of the petition and the assessment roll of the municipality, hereinafter required in Section 9-2-18, shall be immediately delivered by the clerk of the court to the petitioner, who shall record the certified copy with the recorder of deeds of that county, to be kept as part of the permanent records of the office of the recorder.
A certified copy of any order or judgment to divide, modify, alter, change, reduce, increase, annul, confirm, or deny anything contained within the assessment roll shall be immediately delivered by the clerk of the court to the petitioner, who shall record the certified copy with the recorder of that county, to be kept as part of the permanent records of the office of the recorder.
65 ILCS 5/9-2-17