D.C. Mun. Regs. tit. 25-D, § 703
703.1 Handwashing sinks shall be located to allow convenient use by employees in, or immediately adjacent to, toilet rooms.
703.2 A handwashing sink shall be maintained so that it is accessible at all times for employees' use.
703.3 A handwashing sink shall not be used for purposes other than handwashing.
703.4 An automatic handwashing facilities may be substituted for handwashing sinks in a massage establishment or health spa facility that has at least one (1) handwashing sink.
703.5 An automatic handwashing facility shall be used in accordance with the manufacturer's instructions.
Source: Final Rulemaking published at 56 DCR 7975 (October 9, 2009).