65 ILCS 5/9-3-30
Upon receipt of the warrant for the collection of the assessment it shall be the duty of the collector to immediately give notice thereof by publishing notice at least once in a daily or weekly newspaper published and of general circulation in such municipality, if there is one. If there is no such newspaper, then notice shall be given by posting the same in 4 places within the area being improved. The published or posted notice shall indicate that the judgment of confirmation has been entered by the court and shall describe the improvement for which the assessment has been levied, that the collector has received the warrant for the collection of the assessment, that any property owner whose property has been assessed may pay the assessment in full without interest if it is paid within 20 days from the date of the award. The notice shall also state the number of installments the assessment has been divided into and the rate of interest each installment bears, and also shall indicate where payment may be made.
65 ILCS 5/9-3-30