70 ILCS 3405/7
One per cent or more of the legal voters resident within the limits of such proposed addition to a surface water protection district may petition the circuit court for the county in which the original petition for the formation of the surface water protection district was filed, to cause the question to be submitted to the legal voters of such proposed additional territory whether such proposed additional territory shall become a part of the contiguous surface water protection district organized under this Act and whether the voters of such additional territory shall assume a proportionate share of the bonded indebtedness, if any, of such district. Such petition shall be addressed to the court and shall contain a definite description of the boundaries of the territory to be embraced in the proposed addition and shall allege facts in support of such addition.
70 ILCS 3405/7