Ohio Revised Code Title XXXVII. Health Safety Morals § 3718.021

(A) A board of health may regulate the siting, design, installation, operation, monitoring, maintenance, and abandonment of small flow on-site sewage treatment systems in accordance with rules adopted by the director of health under division (A)(13) of section 3718.02 of the Revised Code. If a board of health chooses to regulate small flow on-site sewage treatment systems, the board first shall send written notification to the director of health and the director of environmental protection.

(B) If a board of health chooses to regulate small flow on-site sewage treatment systems under division (A) of this section and later determines that it no longer wants to regulate those systems, the board shall notify the director of health and the director of environmental protection. Upon the receipt of the notification by the director of environmental protection, the board of health shall cease regulating small flow on-site sewage treatment systems, and the environmental protection agency shall regulate those systems.

(C) If after a survey conducted under section 3718.07 of the Revised Code the director of health finds that a board of health that has chosen to regulate small flow on-site sewage treatment systems is not complying with the rules adopted under division (A)(13) of section 3718.02 of the Revised Code, the director shall notify the director of environmental protection and the board of health. Upon receipt of the notification, the board shall cease regulating small flow on-site sewage treatment systems, and the environmental protection agency shall regulate those systems.