70 ILCS 3705/16
In order to pay the cost of the acquisition by condemnation, purchase or otherwise of any waterworks properties, and the improvement or extension from time to time thereof, including engineering and all other expenses, and also for reimbursing or paying the costs and expenses of creating the district, the board of trustees of any such district is authorized to issue and sell revenue bonds of the district payable solely from the income and revenue derived from the operation of the waterworks properties of such district, and may also from time to time issue revenue bonds to refund any bonds at maturity or pursuant to redemption provisions, or at any time before maturity with consent of the holders thereof. All such bonds shall be authorized by ordinance to be adopted by the board of trustees, shall bear such date or dates, mature at such time or times not exceeding 40 years from their respective dates, may bear interest at such rate or rates not exceeding the greater of (i) the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, or (ii) 8% per annum, payable semi-annually, may be in such form, may carry such registration privileges, may be executed in such manner, may be payable at such place or places, may be subject to redemption in such manner, and upon such terms with or without premium as is stated on the face thereof, and may be executed in such manner by such officers of such district, and may contain such terms and covenants, all as provided by the ordinance authorizing their issue.
Such bonds shall be sold in such manner as the board of trustees shall determine, and if issued to bear interest at the greater of (i) the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, or (ii) the rate of 8% per annum, shall be sold for not less than par and accrued interest. However, the selling price of any bonds bearing less than the greater of (i) the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, or (ii) 8% interest shall be such that the interest cost of the money received from the sale of the bonds shall not exceed the greater of (i) the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, or (ii) 8% per annum, computed to absolute maturity, according to standard tables of bond values.
Notwithstanding the form or tenure thereof, and in the absence of expressed recitals on the face thereof that the bonds are non-negotiable, all such bonds shall be negotiable instruments.
To secure payment of any and all of such bonds such ordinance shall set forth the covenants and undertakings of the district in connection with the issuance thereof, and the issuance of additional bonds payable from the revenues or income to be derived from the operation of the waterworks properties of such district, as well as the use and operation thereof.
In case any officer whose signature appears on the bonds or coupons attached thereto shall cease to be such officer before the delivery of the bonds to the purchaser, such signature shall nevertheless be valid and sufficient for all purposes to the same effect as if he had remained in office until the delivery of the bonds.
Under no circumstances shall any bonds issued or any other obligation incurred under this Act by a district be or become an indebtedness or an obligation of the district payable from taxes and shall not in any event constitute an indebtedness of such district within the meaning of the constitutional provisions or limitations, and such fact shall be plainly stated on the face of each bond.
With respect to instruments for the payment of money issued under this Section either before, on, or after the effective date of this amendatory Act of 1989, it is and always has been the intention of the General Assembly (i) that the Omnibus Bond Acts are and always have been supplementary grants of power to issue instruments in accordance with the Omnibus Bond Acts, regardless of any provision of this Act that may appear to be or to have been more restrictive than those Acts, (ii) that the provisions of this Section are not a limitation on the supplementary authority granted by the Omnibus Bond Acts, and (iii) that instruments issued under this Section within the supplementary authority granted by the Omnibus Bond Acts are not invalid because of any provision of this Act that may appear to be or to have been more restrictive than those Acts.
70 ILCS 3705/16