There shall be a minimum of one (1) lifeguard on duty capable of observing the swimming pool for every fifty (50) bathers permitted in the water.
Pool management shall increase the number of lifeguards based on the number of bathers in the swimming pool.
The Department of Health may require a lifeguard to be on duty if none exists, or require additional lifeguards to be on the deck, or restrict swimming to one (1) portion of any swimming pool because of the following:
Swimming pools over eighteen hundred square feet (1800 sq. ft.) of water surface area shall have at least one (1) elevated lifeguard chair for each three thousand square feet (3000 sq. ft.) of swimming pool surface or fraction thereof. A deck-level lifeguard may be used in a designated area on the deck adjacent to shallow water instead of an elevated lifeguard chair.
Swimming pools with a width of forty-five feet (45 ft.) or more shall have more than one (1) lifeguard chair located on each side of the swimming pool.
D.C. Mun. Regs. tit. 25, r. 25-C6410