Connection to the public potable water supply system for the following is prohibited unless properly protected by the appropriate backflow prevention device:
(a) Bidets;
(b) Operating, dissecting, embalming and mortuary tables or similar equipment in such installations the hose used for water supply shall terminate at least 12 inches away from every point of the table or attachments;
(c) Pumps for non-potable substances. Priming only through an air gap;
(d) Building drains, sewers or vent systems;
(e) Commercial buildings or industrial plants manufacturing or otherwise using polluting or contaminating substances; and
(d) Any fixture of similar hazard.
(2010 Code, § 230)