D.C. Mun. Regs. tit. 25, r. 25-C6439
All outdoor swimming pools and spa pools shall be surrounded by a minimum seventy-two inch (72 in.) high fence or other substantial barrier approved by the Department.
The fence shall be continuous around the perimeter of the pool area that is not otherwise blocked or obstructed by adjacent buildings or structures and shall adjoin with itself or abut to the adjacent members.
Access through the barrier or fence from dwelling units such as homes, apartments, motel rooms, and hotel rooms, shall be through self-closing, self-latching lockable gates of forty-eight inch (48 in.) minimal height from the floor with the latch located a minimum of fifty-four inches (54 in.) from the bottom of the gate or at least three inches (3 in.) below the top of the gate on the pool side.
Doored access points from public rooms such as lobbies or club houses need not be through gates.
Gates shall open outward away from the pool area.
A latched, lockable gate shall be placed in the fence within ten feet (10 ft.) of the equipment area for service access.
Screened pool enclosures shall be hardened on the bottom three feet (3 ft.)
Fencing consideration shall be given to the U.S. Consumer Product Safety Commission (CPSC) Publication No. 362 Guidelines.
Safety Covers that comply with ASTM Standard F1346 shall be retrofitted to comply with the swimming pool and spa drain cover entrapment protection standards of the ASME/ ANSI A112.19.8 performance standard as specified in section 6420.6.
D.C. Mun. Regs. tit. 25, r. 25-C6439