D.C. Mun. Regs. tit. 25-A, § 1909
Washed utensils and equipment shall be rinsed so that abrasives are removed and cleaning chemicals are removed or diluted through the use of water or a detergent-sanitizer solution by using one (1) of the following procedures:
(a) Use of a distinct, separate water rinse after washing and before sanitizing if using:
(1) A three (3)-compartment sink;
(2) Alternative manual warewashing equipment equivalent to a three (3)-compartment sink as specified in § 1601.3; or
(3) A three (3)-step washing, rinsing, and sanitizing procedure in a warewashing system for CIP equipment;
(b) Use of a detergent-sanitizer as specified in § 1814 if using:
(1) Alternative warewashing equipment as specified in § 1601.3 that is approved for use with a detergent-sanitizer; or
(2) A warewashing system for CIP equipment;
(c) Use of a nondistinct water rinse that is integrated in the hot water sanitization immersion step of a two (2)-compartment sink operation;
(d) If using a warewashing machine that does not recycle the sanitizing solution as specified in § 1909.1(e), or alternative manual warewashing equipment such as sprayers, use of a nondistinct water rinse that is:
(1) Integrated in the application of the sanitizing solution; and
(2) Wasted immediately after each application; or
(e) If using a warewashing machine that recycles the sanitizing solution for use in the next wash cycle, use of a nondistinct water rinse that is integrated in the application of the sanitizing solution.
SOURCE: Final Rulemaking published at 50 DCR 4394 (June 6, 2003); as amended by Final Rulemaking published at 59 DCR 13690 (November 30, 2012).