D.C. Mun. Regs. tit. 25-B, § 403
403.1 Food employees shall clean their hands in a handwashing sink or approved automatic handwashing facility and shall not clean their hands in a sink used for food preparation or warewashing, or in a service sink or a curbed cleaning facility used for the disposal of mop water or similar liquid waste.
SOURCE: Final Rulemaking published at 56 DCR 5245 (July 3, 2009).