Ohio Rev. Code Ann. § 6115.15

If a sanitary district is established for purposes other than the provision of a water supply for domestic, municipal, and public use, or for the reduction of populations of biting arthropods, after the establishment of the district and the organization of the board of directors of the district no public corporation or person shall install within the district any outlet for discharge of sewage or other liquid waste or any treatment or disposal works until the plans therefor have been submitted to and have received the approval of the board.