70 ILCS 3405/15
In acquiring from any city, village or incorporated town or other municipal corporation any surface water protection facilities, the surface water protection district shall compensate the city, village or incorporated town or other municipal corporation for the fair and reasonable value of said facilities and if the value cannot be mutually agreed upon, then the same shall be determined by a committee of three engineers one appointed by the city, village or incorporated town or other municipal corporation, one appointed by the district and the third appointed by the two engineers selected as above described. A decision of a majority of the committee shall be binding upon both parties and the cost of the services of the committee shall be shared by both parties equally.
70 ILCS 3405/15