Ohio Rev. Code § 6103.22
All contracts under section 6103.21 of the Revised Code shall provide for the payment of compensation to the county or other public agency owning, acquiring, or constructing, or agreeing to acquire or construct, the water supply facilities to be jointly used in an amount agreed upon as the other party's share of the cost of acquiring or constructing the facilities. The contract also shall provide for payment of compensation to the county or other public agency owning, acquiring, or constructing the facilities and operating and maintaining them in an amount agreed upon as the other party's share of the cost of operating and maintaining them, including the cost of water or, in lieu of all other or differing payments, an agreed price per unit for water furnished. A county or other public agency owning, acquiring, or constructing, or agreeing to acquire or construct, any water supply facilities and agreeing to their use by another public agency shall retain full control and management of the acquisition, construction, maintenance, and operation of the facilities, unless otherwise provided in the contract and except, in the case of a county, when conveyed to a municipal corporation as provided in division (B) of section 6103.04 of the Revised Code.
R.C. § 6103.22