70 ILCS 2805/3.1
Upon petition by at least 5% of the registered voters within the territory of a sanitary district, the circuit court of the county in which the district is located shall order a referendum on the question of whether the trustees of the district shall be elected, rather than appointed. Notice of the referendum shall be given and the election conducted in the manner provided in the general election law. The question shall be in substantially the following form:
------------------------------------------------------------------------ Shall the trustees of the.... YES Sanitary District be elected -------------------------------------- rather than appointed? NO ------------------------------------------------------------------------
If a majority of the votes cast on the question are in favor of the election of trustees, trustees shall thereafter be elected as provided in Section 3.2.
No petition may be filed under this Section within the 6 months immediately preceding the regular election at which trustees of such districts are to be elected under the general election law. The question of electing trustees may not be submitted more than once in any 47 month period.
70 ILCS 2805/3.1