45 ILCS 35/100
Moneys of an Authority shall be paid to the treasurer of the Authority. The treasurer shall not commingle the moneys with any other moneys, but shall deposit them in a separate account or accounts. Moneys in the accounts shall be paid out on the check of the treasurer on the requisition of the chairperson of the Authority or of another person authorized by the Authority to make the requisition. The Authority may deposit any of its rates, fees, rents, or other charges, receipts, or income with any bank or trust company that is federally insured and may deposit the proceeds of any bonds issued with any bank or trust company that is federally insured, all as may be provided in any agreement with holders of bonds issued under this Act.
45 ILCS 35/100