D.C. Mun. Regs. tit. 21, § 205
205.1 For the purposes of this chapter and D.C. Code §43-1607(3) (1990 Repl. Vol.), sources other than the District water supply system shall include, but are not, limited to, groundwater and cooling water.
205.2 Sewer service charges under D.C. Code §43-1607(3) (1990 Repl. Vol.) shall not be assessed when the discharge of wastewater is into a separate storm sewer which is totally isolated from the sanitary or combined sewer system of the District.
SOURCE: Final Rulemaking published at 25 DCR 1006 (August 18, 1978); 12 DCRR 500.6(c), (October 1981); as amended by Final Rulemaking published at 46 DCR 5358 (June 18, 1999).