65 ILCS 5/11-17-1
When authorized in the manner provided by Section 11-17-2 the corporate authorities of each municipality with a population of more than 100,000 and less than 200,000 shall establish and maintain a public health board for the use and benefit of the inhabitants of the municipality and shall levy annually a tax of not to exceed .075% of the value, as equalized or assessed by the Department of Revenue, on all taxable property in the municipality. In those municipalities in which a public health board has been established under this Division 17 before July 24, 1967, the corporate authorities shall levy annually a tax not exceeding .075% of the value, as equalized or assessed by the Department of Revenue, on all taxable property in the municipality. The tax levied under this Section shall be levied and collected in like manner as are the general taxes of the collecting municipality, and the money so collected shall be known as the public health board fund. The tax shall be in addition to all other taxes which the municipality is now, or may be hereafter, authorized to levy upon the property within the municipality, and shall be in addition to the amount authorized to be levied for general purposes as provided in Section 8-3-1.
If the municipality is situated within any county or multiple-county health department for whose benefit a tax is levied under "An Act in relation to the establishment and maintenance of county and multiple-county public health departments", approved July 9, 1943, as now or hereafter amended, the county clerk shall reduce and abate from the tax levied by the authority of this Division 17 a rate which would produce an amount equal to the amount of the tax accruing to the municipality under the above-named Act.
65 ILCS 5/11-17-1