Ohio Rev. Code Ann. § 3718.02
(A) The director of health, in accordance with Chapter 119. of the Revised Code, shall adopt, and subsequently may amend and rescind, rules of general application throughout the state to administer this chapter. Rules adopted under division (A) of this section shall do at least all of the following:
(3) Prescribe standards for the siting, design, installation, operation, monitoring, maintenance, and abandonment of sewage treatment systems that may be used in this state and for the progressive or incremental alteration or repair of an existing sewage treatment system or the progressive or incremental installation of a new system to replace an existing sewage treatment system. The rules shall be adopted so as to establish a preference for the repair of an existing sewage treatment system, when technically and economically feasible, rather than its replacement with a new system. The standards shall include at a minimum all of the following:
(a) Soil absorption specifications and vertical separation distances.
(18) Require a board of health to give notice and an opportunity for a hearing, pursuant to section 3718.11 of the Revised Code, to an affected property owner regarding any of the following:
(B)
(3) In reviewing a proposed rule, the director shall approve the rule if all of the following apply: