5401.1 An Owner shall maintain all interior plumbing to prevent contamination of the public water system from nonpotable liquids, solids, gasses or mixture of substances through cross connections.

5401.2 An Owner shall not permit the installation of a bypass around any backflow preventer unless a backflow preventer is installed on the bypass.

SOURCE: Final Rulemaking published at 48 DCR 1743 (February 23, 2001).