65 ILCS 5/11-129-9
In addition to other projects authorized by this Division 129, any municipality with a population under 500,000 may construct or acquire a water-supply system to serve a particular locality within or without its corporate limits or to extend or improve an existing water-supply system for the purpose of serving a particular locality within or without the municipality not theretofore served by its existing system, and may pay the cost thereof by the issuance and sale of revenue bonds of the municipality, payable solely from the revenue derived from the operation of the water-supply system constructed or acquired for that particular locality, or from the revenue derived from the operation of the improvements and extensions of an existing system.
Except insofar as inconsistent with Sections 11-129-9 through 11-129-11, the provisions of Section 11-129-1 through 11-129-8 shall govern all matters connected with projects under this Section. In addition to the requirements of Section 11-129-3, an ordinance for a project under this Section shall contain a description of the particular locality to be served by the system, improvement or extension.
65 ILCS 5/11-129-9