Ohio Rev. Code Ann. § 513.01

The board of township trustees may annually levy and collect a tax, not to exceed one mill on each dollar of the taxable property of the township, and pay it to a hospital association which maintains and furnishes a free public hospital for the benefit of the inhabitants of such township, or to a hospital association, which maintains a public hospital which is not free except to such inhabitants of the township as, in the opinion of the trustees of such hospital, are unable to pay or to a municipal corporation contracting to furnish hospital service to the inhabitants of such township.