Ohio Rev. Code § 6109.13: Approval of connections to public water system.

No official, officer, or employee in charge of or being employed in the maintenance and operation of a public water system and no other person, firm, or corporation shall establish or permit to be established any connection whereby water from a private, auxiliary, or emergency water system may enter the public water system, unless such private, auxiliary, or emergency water system, and the method of connection and use of such system, has been approved by the environmental protection agency.