Unless provided for by contract between a county and a municipal corporation, a municipal corporation may not regulate rates and charges of users imposed by a board of county commissioners under Chapter 6103. or 6117. of the Revised Code or for any county utility established under any other chapter of the Revised Code.
No regulation of county utility user rates
Ohio Rev. Code Ann. § 715.90, under General Powers.
Ohio Rev. Code Ann. § 715.90