California Code of Regulations (Cal. Code Reg.): Title 22 – Social Security > Cal. Code Reg. §65501. Definitions
(a) “Ancillary Facility” means any area used in conjunction with or for the operation of a public pool, including, but not limited to, public dressing rooms, lockers, shower or bathroom areas, drinking fountains, equipment rooms, pool deck areas, pool enclosures, or building spaces, that is intended to be used by pool users.
(b) “Clean Pool Water” means public pool water maintained free of dirt, oils, scum, algae, floating debris, or visible organic and inorganic materials that would pollute the water.
(c) “Communicable Disease” means an illness caused by an infectious agent or its toxins that occurs through the direct or indirect transmission of the infectious agent or its products from an infected individual or via an animal, vector, or the inanimate environment to a susceptible animal or human host.
(d) “Clear Pool Water” means public pool water that is free from cloudiness and is transparent.
(e) “Enforcing Agent” means the local health officer, director of environmental health, registered environmental health specialist, environmental health specialist trainee, or an inspector of the State Department of Public Health.
(f) “Pool Operator” means the pool owner or a person the pool owner delegates to conduct public pool operation and maintenance. The public pool owner may delegate pool operator responsibilities to another person, but the pool owner shall retain responsibility for ensuring compliance with these regulations.
(g) “Pool User” means a person using a public pool or ancillary facilities for the purpose of participating in or watching pool users engaged in water activities such as diving, swimming, or wading.
(h) “Public Pool” means any public swimming pool, public bathhouse, public swimming place, and public bathing place that is or includes an artificial basin, chamber, or tank constructed or prefabricated with impermeable surfaces and such pools, bathhouses, and places are used or intended to be used for public swimming, diving, or recreational water activities. “Public Pool” does not include individual therapeutic tubs or baths where the main purpose is cleaning of the body.
(i) “Public Pool Sites” means all public pools, ancillary facilities, and water treatment systems at the public pool premises.
(j) “Recirculation System” means the system of hydraulic components designed to remove, filter, disinfect, and return water to the public pool.
(k) “Spa” means a public pool that incorporates a water jet system, an aeration system, or a combination of the two systems used in conjunction with heated water.
(l) “Special Purpose Pool” means a public pool constructed exclusively for a specific purpose, such as instruction, diving, or medical treatment.
(m) “Splash Zone” means the maximum distance the water from a spray ground can project horizontally.
(n) “Spray Ground” means a public pool with no standing water in the splash zone and consists of a surge basin with a recirculation system from which water is directed through water features for contact with pool users.
(o) “Surge Basin” means a reservoir or surge trench open to the atmosphere that receives water via gravity flow from the main drain, spray ground, or perimeter overflow system and from which the recirculation system operates.
(p) “Wading Pool” means a public pool intended to be used for wading by small children and having a maximum water depth of 18 inches (457 mm) at the deepest point.
(q) “Water Feature” means an interactive device or structure such as a water fountain, water spray, dancing water jet, waterfall, dumping bucket, or shooting water cannon through which water is directed at the pool user.
(r) “Water Treatment System” means all materials and equipment related to disinfection, water quality, recirculation, and filtration.