Ohio Rev. Code § 6115.66
The same land, if conducive to public health, safety, convenience, or welfare, may be included in more than one sanitary district and be subject to sections 6115.01 to 6115.79, inclusive, of the Revised Code, for each district in which it may be included. No district shall be organized under such sections in whole or in part within the territory of a district already organized under such sections until the court determines whether the public health, safety, convenience, or welfare demand the organization of an additional district, or whether it demands that the territory proposed to be organized into an additional district shall be added to the existing district. If the proceedings concerning two or more such districts are before the court of common pleas of two or more counties, such determination shall be as provided in section 6115.67 of the Revised Code.
R.C. § 6115.66