70 ILCS 3405/2

Whenever any territory is (1) an area of contiguous territory in a county, or in more than one, but in not more than two counties; (2) so situated that the acquisition, establishment, maintenance and operation of facilities, vehicles, apparatus and equipment for the prevention and control of surface water damage therein will conduce to the promotion and protection of the health, safety, welfare and convenience of the public; (3) so situated that such territory contains no territory included in any other surface water protection district; the same may be incorporated as a surface water protection district in the manner provided in Sections 3 and 4 or in the manner provided in Section 4a.