Ohio Rev. Code § 6101.63
In addition to the uniform rates for water provided for by sections 6101.24 and 6101.53 of the Revised Code, the board of directors of a conservancy district, for the purpose of providing funds for bond retirement and interest, and thus accomplishing reduction in the amount to be collected through annual levy, may charge an additional rate for water furnished by the district to a public corporation or person within the district. The aggregate amount collected through such additional rate from any public corporation or person during each successive five year period shall not exceed ninety per cent of the total amount of annual levies which would be collectible from such public corporation or person during such period without such additional rate. Before such additional rate to a public corporation may be established, the governing body or other legislative authority thereof shall pass a resolution and shall certify a copy thereof to the board. Such resolution shall determine that an additional rate for water furnished to such public corporation by the district should be established for the purpose of accomplishing reduction of the amount payable by such public corporation through assessment or annual levy of such district, shall determine what percentage, as limited by this section, of the total amount of the annual levies upon such public corporation during a five year period or successive five year periods is to be paid through such additional rate, shall determine the number of years, which may be not less than five, for which such additional rate is to be effective, and shall request determination of such additional rate by the board. The board shall thereupon determine an additional rate in accordance with the basis and for the term of years set forth in said resolution. Upon determination of such additional rate to a public corporation or person by the board, the board shall report its determination to the court and thereafter all proceedings shall be had in the same manner as is provided by section 6101.24 of the Revised Code. Upon the final approval by the court of such additional rate, it shall be conclusive and binding. The officers of such public corporation having authority to establish rates for water furnished by such public corporation shall thereupon establish such rates as are necessary to produce sufficient revenue for the payment of such additional rate in addition to the other expenses and obligations of the water department of the public corporation. When such rates are so established, sections 735.29 and 743.04 of the Revised Code shall apply in the assessment and collection of such rates by the public corporation. Thereafter during the term for which the additional rate has been determined and approved by the court, such additional rate may be reduced upon determination of a reduced rate by the board and approval thereof by the court, after a hearing in the manner provided by section 6101.24 of the Revised Code.
Bills for such additional charges to a public corporation shall be rendered and payment made from the funds of the water-works department of such public corporation in the same manner as is provided by section 6101.53 of the Revised Code. The use of funds of the water-works department of a municipal corporation for the purpose of payment of such additional charges shall be in addition to the uses permitted by sections 715.08, 735.29, 743.04, and 743.05 of the Revised Code, and the governing body or other appropriating authority may appropriate funds of the water-works department for such purpose. Revenue received by the district through such additional rate shall be set apart in the bond fund and shall be appropriated by the board from time to time solely for the purpose of paying the principal and interest of bonds of the district.
Each year in determining, ordering, and levying an annual levy upon a public corporation or person within the district, as provided by section 6101.55 of the Revised Code, the board shall credit such public corporation or person with such amount as has been actually paid to the district through such additional rate and not previously credited, and such credit shall apply as a reduction of the amount of such annual levy upon such public corporation or person.
R.C. § 6101.63