D.C. Mun. Regs. tit. 25-B, § 1300
1300.1 The only approved system for drinking water is the District of Columbia public water system.
1300.2 A food processing operation shall not obtain water for its operations from a water system that is not the District of Columbia public water system.
SOURCE: Final Rulemaking published at 56 DCR 5245 (July 3, 2009).