As used in this Division, “municipality” means any city, village or incorporated town; and “municipal” refers to any such municipality. Any municipality may provide facilities or services for the benefit of its mentally deficient residents who are not eligible to participate in any such program conducted under Article 14 of The School Code, or may contract therefor with any privately or publicly operated entity which provides facilities or services either in or without such municipality.
     For such purpose, the corporate authorities may levy an annual tax of not to exceed .1% upon all of the taxable property in the municipality at the value thereof, as equalized or assessed by the Department of Revenue. Such tax shall be levied and collected in the same manner as other municipal taxes, but shall not be included in any limitation otherwise prescribed as to the rate or amount of municipal taxes but shall be in addition thereto and in excess thereof. When collected, such tax shall be paid into a special fund in the municipal treasury, to be designated as the “Mentally Deficient Persons’ Fund,” and shall be used only for the purpose specified in this Section.