Ohio Rev. Code Ann. § 3745.50
(B) The director or the director's designee shall consult with the directors of agriculture, health, and natural resources and representatives of local governments, publicly owned treatment works, and public water systems to implement actions that do both of the following:
(C) The director or the director's designee shall develop and implement protocols and actions that may include, but are not limited to, the following:
(3) Protocols requiring public water systems to notify the environmental protection agency if any of the following occurs: