D.C. Mun. Regs. tit. 25-C, § 6446
6446.1 To qualify for a swimming pool and spa operator's permit an applicant shall:
6446.2 A swimming pool and spa operator's permit shall be valid for a three (3) year period.
SOURCE: Final Rulemaking published at 55 DCR 012845 (December 26, 2008).