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454.1.8 Spa Pools
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The color, pattern or finish of the pool interior shall not obscure the existence or presence of objects or surfaces within the pool.
Spa-type pools shall have a minimum water depth of 21/2 feet (762 mm) and a maximum water depth of 4 feet (1219 mm), except that swim spa pools may have a maximum water depth of 5 feet (1524 mm). Depth markers and "NO DIVING" markers are not required on spa-type pools with 200 square feet (19 m2) or less of water surface area.
Steps or ladders shall be provided and shall be located to provide adequate entrance to and exit from the pool. The number of sets of steps or ladders required shall be on the basis of one for each 75 feet (22 860 mm), or major fraction thereof, of pool perimeter. Step sets for spa-type pools with more than 200-square-feet (19 m2) of pool water surface area shall comply with Section 4220.127.116.11. Step sets for spa-type pools with 200 square feet (19 m2) or less of pool water surface area shall comply with the following: Step treads shall have a minimum width of 10 inches (254 mm) for a minimum continuous tread length of 12 inches (305 mm). Step riser heights shall not exceed 12 inches (305 mm). Intermediate treads and risers between the top and bottom treads and risers shall be uniform in width and height, respectively. Contrasting markings on the leading edges of the submerged benches and the intersections of the treads and risers are required to be installed in accordance with Section 418.104.22.168.
Decks shall have a minimum 4-footwide (1219 mm) unobstructed width around the entire pool perimeter except that pools of less than 120 square feet (11 m2) of pool water surface area shall have a minimum 4-foot-wide (1219 mm) unobstructed continuous deck around a minimum of 50 percent of the pool perimeter. Decks less than 4 feet (1219 mm) wide shall have barriers to prevent their use. Decks shall not be more than 10 inches (254 mm) below the top of the pool. For pools of 120 square feet (11 m2) or greater, 10 percent of the deck along the pool perimeter may be obstructed.
The return lines of spa-type therapy or jet systems shall be independent of the recirculation-filtration and heating systems.
Spa-type pools with less than 20 feet (6096 mm) of perimeter shall have a minimum of two equally spaced adjustable inlets.
Spa-type pools shall have a minimum of one turnover every 30 minutes. The piping, fittings, and hydraulic requirements shall be in accordance with Section 422.214.171.124. All recirculation lines to and from the pool shall be individually valved with proportional flow-type valves in order to control the recirculation flow.
Spa-type pools of over 200 square feet (19 m2) of pool water surface area shall have provisions for vacuuming.
When spa pools are part of a conventional swimming pool, the spa pool area shall be offset from the main pool area with the same water depth as the main pool area. The spa pool shall meet all the spa pool requirements of this chapter, and the deck area at the spa shall be protected by connected 30-inch-high (762 mm) stanchions. The deck perimeter at the offset spa area shall not exceed 15 percent of the entire swimming pool perimeter. All benches shall have contrasting markings on the leading edges of the intersection of the bench seats. If tile is used, it shall be slip resistant.
Portable and wooden-type spa pools are prohibited.
Automated oxidation reduction potential (ORP) and pH controllers with sensing probes shall be installed on spa pools to assist in maintaining proper disinfection and pH levels.
In addition to the requirements of Section 4126.96.36.199.5 spa pool signs installed shall include the following:
A clock shall be visible from the spa pool to assist the patron in meeting Item 4 of Section 4188.8.131.52.
If a spa is equipped with an emergency cutoff or kill switch, it shall include provisions for a minimum 80 decibel audible alarm near the spa to sound continuously until deactivated when such device is triggered. The following additional rule sign shall be installed to be visible by the spa which reads "ALARM INDICATES SPA PUMPS OFF. DO NOT USE SPA WHEN ALARM SOUNDS UNTIL ADVISED OTHERWISE."