D.C. Mun. Regs. tit. 25-C, § 413
413.1 A pool owner, pool and spa operator, lifeguard, or swimming instructor shall report any death, serious injury, or injury that requires resuscitation or admission to a hospital occurring at a swimming pool, spa pool, sauna to the Department within twenty-four hours (24 hrs.) of the incident.
413.2 A pool owner, pool and spa operator, lifeguard, or swimming instructor shall report a complaint of illness attributed by a bather to use of a swimming pool, spa pool, or sauna to the Department within twenty-four (24) hours of the incident.
413.3 The report to the Department shall include the following:
(a) Name and telephone number or address of the person injured or making a complaint;
(b) Date of the incident or onset of illness;
(c) Description of the type of injury or complaint;
(d) Name and telephone number of the person rendering assistance or first aid;
(e) The name of any known hospital, rescue squad or physician providing medical assistance;
(f) Names and telephone numbers of available witnesses to the incident; and
(g) All physical security breaches.
SOURCE: Final Rulemaking published at 64 DCR 5359 (June 9, 2017).