65 ILCS 5/11-139-12
For the purpose of acquiring, constructing, extending, or improving any combined waterworks and sewerage system under this Division 139, or any property necessary or appropriate therefor, any municipality has the right of eminent domain, as provided by the Eminent Domain Act.
The fair cash market value of an existing waterworks and sewerage system, or portion thereof, acquired under this Division 139, which existing system is a special use property, may be determined by considering Section 15 of Article I of the Illinois Constitution, the Eminent Domain Act, and the Uniform Standards of Professional Appraisal Practice and giving due consideration to the income, cost, and market approaches to valuation based on the type and character of the assets being acquired. In making the valuation determination, the historical and projected revenue attributable to the assets, the costs of the assets, and the condition and remaining useful life of the assets may be considered while giving due account to the special use nature of the property as used for water and sewerage purposes.
Additionally, in determining the fair cash market value of existing utility facilities, whether real or personal, consideration may be given to the depreciated value of all facilities and fixtures constructed by the utility company and payments made by the utility company in connection with the acquisition or donation of any waterworks or sanitary sewage system.
Except as is provided in subsection (h) of Section 10-5-10 of the Eminent Domain Act, no prior approval of the Illinois Commerce Commission, or any other body having jurisdiction over the existing system, is required.
65 ILCS 5/11-139-12