410 ILCS 655/15

(a) In order to carry out the purposes of this Act, any duly authorized representative of the Department may, at any reasonable hour of the day, do any of the following: (1) Enter and inspect a licensed facility or any place where bottled water or vended water records are stored, kept, or maintained. (2) Inspect and copy any records, reports, test results, or other information required to implement this Act. (3) Obtain samples of the water supply and finished product. (b) The Department shall inspect every water-bottling plant and private water source at least once each year. The Department shall provide an opportunity for a representative of the water-bottling plant or private water source operator to accompany the Department's representative during the inspection. (c) Any person who prevents, interferes with, or attempts to impede in any way any duly authorized representative of the Department from undertaking any activity authorized by this Section is guilty of a Class A misdemeanor.