D.C. Mun. Regs. tit. 25-B, § 1401
1401.1 A plumbing system shall be designed, constructed, and installed according to the Plumbing Code.1401.2 A plumbing system shall be of sufficient size and shall be designed, constructed, installed and maintained according to the Plumbing Code to:- (a) Carry sufficient quantities of water to required locations throughout the food processing operation;
- (b) Properly convey sewage and liquid disposable waste from the food processing operation;
- (c) Avoid constituting a source of contamination to food, potable water, food contact surfaces, equipment, utensils or food packaging materials, or creating any unsanitary condition; and
- (d) Provide sufficient floor drainage to prevent excessive pooling of water or other disposable waste in all areas where floors are subject to flooding-type cleaning or where normal operations release or discharge water or other liquid waste on the floor.1401.3 A plumbing fixture such as a handwashing facility, toilet, or urinal shall be easily cleanable.N1401.4 Each food processing operation shall be equipped with effective plumbing and sewage facilities and adequate accommodations.
SOURCE: Final Rulemaking published at 56 DCR 5245 (July 3, 2009).