60 ILCS 1/95-5

Whenever any controversy or cause of action exists between any townships of this State or between any township and an individual or corporation, the proceedings may be had in civil actions for the purpose of trying and finally settling the controversy. The proceedings may be conducted in the same manner, and the judgment or order in the proceedings shall have the same effect, as in other civil actions or proceedings of a similar kind between individuals and corporations. All process shall be served by leaving a copy of the process with the township supervisor.