An owner shall ensure that a recreational pool, semipublic pool, or public spa has an equipment room that: Houses the pool or spa circulation, filtration, and disinfection equipment; and Has: Weathertight construction to prevent the entrance of precipitation; Adequate floor area for safe access to all equipment; A minimum ceiling height of 7 feet 6 inches; A waterproof floor that drains to a floor drain; A lockable entrance door that allows complete and unencumbered access to the equipment room; A minimum of 20 footcandles of artificial illumination; Ventilation sized at 2 cubic feet per minute per square foot of floor area that is: Mechanical exhaust ventilation if chemicals are used or stored in the equipment room, or Natural or mechanical exhaust ventilation if chemicals are not used or stored in the equipment room; Adequate make-up air to replace the air exhausted by the ventilation system; A hose bibb with an atmospheric vacuum breaker; and A water-resistant data sheet that is posted in a conspicuous place for each pool or spa and that includes the following information: Volume of water, Minimum turnover rate, Maximum filter capacity, Water surface area, Length of water perimeter, Maximum bather load, and Operating instructions for valves and equipment.