A tax of not to exceed .0333% of the value, as equalized or assessed by the Department of Revenue, on the assessed value of all taxable property within each municipality, which has established a public comfort station, shall be assessed, levied, and collected by the municipality in the manner provided for the assessment, levy, and collection of other taxes for corporate purposes. The tax authorized by this Section is in addition to taxes for general corporate purposes authorized by Section 8-3-1. The proceeds of this tax shall be kept in a separate fund and shall be used for the establishment, equipment, and maintenance of public comfort stations and for no other purpose.
     The foregoing limitation upon tax rate may be increased or decreased according to the referendum provisions of the General Revenue Law of Illinois.