D.C. Mun. Regs. tit. 25-D, § 717
Operation and Maintenance - Prohibiting a Cross Connection*
Effective Oct 9, 200956 DCR 7975Authority: Section 4902 of the Department of Health Functions Clarification Act of 2001 (“Act”) (effective October 3, 2001), D.C. Law 14-28, D.C. Official Code § 7-731(a)(12) (2008 Repl.), and the Mayor’s Order 2006-10 dated January 27, 2006 Source: Final Rulemaking published at 56 DCR 7975 (October 9, 2009)District of Columbia, Office of the Secretary
717.1 A person shall not create a cross connection by connecting a pipe or conduit between the drinking water system and a nondrinking water system or a water system of unknown quality.
717.2 The piping of a nondrinking water system shall be durably identified so that it is readily distinguishable from piping that carries drinking water.N
Source: Final Rulemaking published at 56 DCR 7975 (October 9, 2009).