65 ILCS 5/11-142-1
Subject to the provisions of Section 11-142-2, whenever a municipality which is not in a sanitary district has constructed a sewage treatment or disposal plant or plants, the municipality may levy an annual tax of not to exceed .075% of the value, as equalized or assessed by the Department of Revenue, of all taxable property therein for the operation and maintenance of the plant or plants. The tax shall be in addition to all other taxes authorized by law to be levied and collected in the municipality and shall be in addition to taxes levied for general purposes as authorized by Section 8-3-1.
The foregoing limitation upon tax rates may be increased or decreased according to the referendum provisions of the General Revenue Law of Illinois.
65 ILCS 5/11-142-1