70 ILCS 1105/12
Current through Public Act 103-1052
All contracts for supplies, material, or work involving an expenditure in of more than $10,000 shall be let to the lowest responsible bidder, after advertising at least once in one or more newspapers of general circulation within the district, except work requiring personal confidence or necessary supplies where competitive bidding is impossible. Contracts for supplies, material, or work involving an expenditure of $10,000 or less may be let without advertising for bids, but whenever practicable at least 3 competitive bids shall be obtained before letting the contract. All contracts for supplies, material, or work shall be signed by the president of the board of commissioners or by any other officer designated by the board.
70 ILCS 1105/12