70 ILCS 3105/21
For the purpose of acquisition of real property, or rights thereto, and of constructing or acquiring solid waste disposal facilities, a district may issue and sell bonds. However, no such bonds other than bonds payable solely from the revenues derived by the district from the operation of such facilities may be issued unless the proposition to issue bonds has been submitted to the legal voters of the district at an election and has been approved by a majority of those voting on the proposition. Such election is subject to Section 22 of this Act.
No district shall become indebted in any manner or for any purpose, to any amount including existing indebtedness in the aggregate exceeding 0.5% of the full, fair cash value, as equalized or assessed by the Department of Revenue, of the taxable property therein.
Before or at the time of issuing bonds, other than revenue bonds, the district shall provide by ordinance for the collection of an annual tax, within the limits of the taxes hereinbefore authorized, sufficient to pay such bonds and the interest thereon as the same respectively become due. Such bonds shall be divided into series, the first of which shall mature not later than 5 years after the date of issue and the last of which shall mature not later than 20 years after the date of issue; shall bear interest at a rate or rates not exceeding the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract; shall be in such form as the district shall by resolution provide and shall be payable as to both principal and interest from the proceeds of the annual levy of taxes hereinbefore authorized to be levied, or so much thereof as will be sufficient to pay the principal thereof and the interest thereon. Prior to the authorization and issuance of such bonds the district may, with or without notice, negotiate and enter into an agreement or agreements with any bank, investment banker, trust company or insurance company or group thereof whereunder the marketing of such bonds may be assured and consummated. The proceeds of such bonds shall be deposited in a special fund, to be kept separate and apart from all other funds of the conservation district.
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 3105/21