Ohio Rev. Code § 3734.10
The attorney general or the prosecuting attorney of the county, city director of law, or village solicitor where a violation has occurred, is occurring, or may occur, upon request of the respective board of health of the health district, the legislative authority of a political subdivision in which a violation has occurred, is occurring, or may occur, or the director of environmental protection, shall criminally prosecute to termination or bring an action for injunction against any person who has violated, is violating, or is threatening to violate any section of this chapter, rules adopted under this chapter, or terms or conditions of permits, licenses, variances, or orders issued under this chapter. In the instance of a violation of section 3734.60 of the Revised Code, only the director of environmental protection may request the attorney general, or the prosecuting attorney of the county, city director of law, or village solicitor where a violation of that section has occurred, is occurring, or may occur, to bring an action for injunction against a person who has violated, is violating, or is threatening to violate that section. The court of common pleas in which an action for injunction is filed has the jurisdiction to and shall grant preliminary and permanent injunctive relief upon a showing that the person against whom the action is brought has violated, is violating, or is threatening to violate any section of this chapter, rules adopted thereunder, or terms or conditions of permits, licenses, variances, or orders issued under this chapter. The court shall give precedence to such an action over all other cases.
Upon written request by any person, the board of health or the director shall conduct such investigations and make such inquiries as are necessary to secure compliance with this chapter, rules adopted thereunder, and terms and conditions of permits, licenses, variances, and orders issued under it. The director or any board of health, upon request or upon their own initiative, may investigate or make inquiries into any alleged violation or act of improper solid waste disposal, improper infectious waste transportation or treatment, or improper hazardous waste storage, transportation, treatment, or disposal or regarding the management of scrap tires.
This section does not apply to the enforcement of sections 3734.90 to 3734.9013 of the Revised Code or any rules adopted or assessments made under those sections.
This chapter does not abridge rights of action or remedies in equity, under common law, or as provided by statute or prevent the state or any municipal corporation or person in the exercise of their rights in equity, under common law, or as provided by statute to suppress nuisances or to abate or prevent pollution.
R.C. §3734.10