R 325.11403 Cross-connections prohibited.

Rule 1403. (1) A temporary or permanent unprotected cross connection between a public water supply system and any source, piping, or system that may contain nonpotable water or other substances is prohibited. (2) Subrule (1) of this rule applies to all customer types, such as, industrial, commercial, institutional, governmental, and single and multi-unit residential. (3) Piping configurations creating the potential for water from a public distribution system to flow through a private water main or customer site piping and back into the public system are prohibited. Areas of private water main served by two or more service connections, where flow through the private system can re-enter the public system shall have cross connection control protection installed at each connection point to the public system.