70 ILCS 605/6-15

The treasurer shall pay out district funds only upon a written order signed by a majority of the commissioners, or upon the order of court, and shall carefully preserve all such orders. Notes, bonds or interest coupons which are lawful obligations of the district and obligations for Social Security taxes as required by the "Social Security Enabling Act" may be paid when due by the treasurer out of district funds without the further order of the commissioners.