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RULE §265.182Definitions

The following words and terms when used in this chapter shall have the following meanings unless the context clearly indicates otherwise.

  (1) Above-ground pool or spa--A removable pool or spa of any shape that is located on the surrounding earth or a pool or spa package located in an excavation below the ground level that may be readily disassembled or stored and reassembled.

  (2) Actual water level--The water level at any particular point in time, which may vary with specific conditions such as rainfall or number of users. (See definition (47) "Design water level" and (88) "Operating water level range".)

  (3) Algae--Microscopic plant-like organisms that contain chlorophyll and include green, blue-green or black brown, and yellow-green (mustard) algae.

  (4) Algaecide--A natural or synthetic substance used for killing, destroying, or controlling algae.

  (5) Alkalinity--The amount of bicarbonate, carbonate or hydroxide compounds present in water solution. (See definition (143) "Total alkalinity".)

  (6) Approved cover or approved drain cover--A suction outlet drain cover that meets the requirements of §265.190(c)(1) of this title (relating to Suction Outlets and Return Inlets at Post-10/01/99 and Pre-10/01/99 Pools and Spas).

  (7) Approved grate--A suction outlet grate that meets the requirements of §265.190(c)(2) of this title.

  (8) ACI--American Concrete Institute, P.O. Box 9094, Farmington Hills, Michigan 48333-9094, telephone (248) 848-3800.

  (9) ANSI--American National Standards Institute, 25 West 43rd Street (4th Floor), New York, New York 10036, telephone (212) 642-4900.

  (10) ANSI/NSPI-1 1991--American National Standards Institute and National Spa and Pool Institute Standards for Public Swimming Pools adopted in 1991.

  (11) ANSI/NSPI-2 1992--American National Standards Institute and National Spa and Pool Institute Standards for Public Spas adopted in 1992.

  (12) ARC--American Red Cross, 8111 Gatehouse Road, Falls Church, Virginia 22042, telephone (703) 206-6000.

  (13) ASHRAE--American Society of Heating, Refrigeration and Air-Conditioning Engineers, Inc., 1791 Tullie Circle NE, Atlanta, Georgia 30329-2305, telephone (800) 527-4723.

  (14) ASME--American Society of Mechanical Engineers, 22 Law Drive, P.O. Box 2900, Fairfield, New Jersey 07007-2900, telephone (800) 843-2763.

  (15) ASPSA--American Swimming Pool and Spa Association, 1108 Little River Dr., Elizabeth City, North Carolina 27909, telephone (252) 331-2301.

  (16) ASTM--American Society of Testing Materials, 100 Barr Harbor Drive, West Conshohocken, Pennsylvania 19428-2959, telephone (610) 832-9500.

  (17) Available chlorine--Rating of chlorine containing products for total oxidizing power. (See definition (62) "Free available chlorine".)

  (18) AVS--An atmospheric vent system, as described in §296.190(d)(3)(A) of this title for minimizing risk of entrapment.

  (19) Backwash--The process of cleansing the filter medium and/or elements by the reverse flow of water through the filter.

  (20) Backflow prevention device--A device that is designed to prevent a physical connection between a potable water system and a non-potable source such as a pool or spa, or a physical connection between a pool or spa and a sanitary sewer or wastewater disposal system. (See definition (41) "Cross-connection control device".)

  (21) Bacteria--Single-celled microorganisms of various forms, some of which cause infections or disease.

  (22) Beginner's areas--Water areas that are 3 feet or less in depth in a pool.

  (23) Bleeder valve--A device that allows air to be vented from a closed system. (See definition (154) "Valve".)

  (24) Bonded--The permanent joining of metallic parts to form an electrically conductive path that will ensure electrical continuity and the capacity to conduct safely any current likely to be imposed in order to minimize the risk of electrocution. Examples of bonding are the installation of a metal wire from a pool or spa pump to the rebar in the pool or spa wall, or interconnecting all rebar in a pool or spa wall by metal wire prior to pouring concrete in the wall.

  (25) Breakpoint--The practice of adding a sufficient amount of chlorinating compound to water to destroy chlorine demand compounds and any combined chlorine, which is present. Generally, the level of chlorine added is 10 times the level of combined chlorine in the water. (See definition (132) "Super chlorination".)

  (26) Breakpoint chlorination--The addition of a sufficient amount of chlorine to water to destroy the chlorine demand compounds and any combined chlorine that is present. (See definition (132) "Super chlorination".)

  (27) Broken stripe--A horizontal stripe that is at least 1 inch wide with uniform breaks in the stripe, with the breaks totaling not more than 75% of the length of the stripe and stripe breaks.

  (28) Bromine--A chemical element (Br2) that exists as a liquid in its elemental form or as part of a chemical compound that is a biocide agent used to disinfect pool or spa water.

  (29) Chemical feeder--A mechanical device for applying chemicals to pool or spa water.

  (30) Chloramine--A compound formed when chlorine combines with nitrogen or ammonia that when found in significant amounts in a pool or spa, may cause eye and skin irritation and may have an objectionable odor.

  (31) Chlorinator--A device to apply or to deliver a chlorine disinfectant to water at a controlled rate.

  (32) Chlorine--A chemical element (Cl2) that exists as a gas in its elemental form or as a part of chemical compound that is an oxidant. Chlorine is a biocide agent used to disinfect pool or spa water.

  (33) Chlorine demand compounds--Organic matter, chloramines, and other such compounds that chlorine reacts with and that depletes chlorine.

  (34) Chlorine Institute--Chlorine Institute, 2001 L Street North West, Suite 506, Washington, D.C. 20036-4919, telephone (202) 775-2790.

  (35) Circulation equipment--The mechanical components that are a part of a circulation system on a pool or spa. Circulation equipment may include but is not limited to, categories of pumps; hair and lint strainers; filters; valves; gauges; meters; heaters; surface skimmers; inlet/outlet fittings; and chemical feeding devices. The components have separate functions, but when connected to each other by piping, perform as a coordinated system for purposes of maintaining pool or spa water in a clear, sanitary, and desirable condition for use.

  (36) Circulation system--An arrangement of mechanical equipment or components, connected by piping to a pool or spa in a closed circuit. The function of a circulation system is to direct water from the pool or spa, causing it to flow through the various system components for purposes of clarifying, heating, purifying, and returning the water back to the original body of water.

  (37) Combined chlorine--The portion of the total chlorine pre-10/01/99 in water in chemical combination with ammonia, nitrogen, and/or organic compounds, mostly comprised of chloramines. Combined chlorine plus free chlorine equals total chlorine.

  (38) Construction date--The date that a building permit for construction of the pool or spa is issued by a municipality or, if no building permit is required, written documentation of the date that excavation or electrical service to the pool or spa begins, whichever is first.

  (39) Coping--The cap on the pool or spa wall that provides a finishing edge around the pool or spa. The coping can be formed, cast in place or pre-cast, or pre-fabricated from metal or plastic materials.

  (40) CPSC--United States Consumer Product Safety Commission, Washington, D.C. 20207, telephone (800) 638-2772.

  (41) Cross-connection control device--A device that is designed to prevent a physical connection between a potable water system and a non-potable source such as a pool or spa, or a physical connection between a pool or spa and a sanitary sewer or wastewater disposal system. (See definition (20) "Backflow prevention device".)

  (42) Cyanuric acid--A chemical that helps reduce the excess loss of chlorine in water due to the ultraviolet rays of the sun.

  (43) Decks--Areas immediately adjacent to or attached to a pool or spa that are specifically constructed or installed for sitting, standing, or walking.

  (44) Deep areas--Water levels in pools that are over 5 feet deep.

  (45) Department--The Texas Department of Health, General Sanitation Division, 1100 West 49th Street, Austin, Texas 78756, telephone (512) 834-6635.

  (46) Depth (pool or spa depth)--The vertical distance measured at 3 feet from the pool or spa wall from the bottom of the pool or spa to the design water level.

  (47) Design water level--The design water level defined in either of the following ways:

    (A) skimmer system--The design water level shall be at the midpoint of the operating range of the skimmers; or

    (B) overflow system--The design waterline shall be at the top of the overflow rim of the gutter system.

  (48) DPD--A chemical testing reagent (N,N-Diethyl-P-Phenylenediamine) used to measure the levels of free chlorine or bromine in water by yielding a series of colors ranging from light pink to dark red.

  (49) Disinfectant--Energy or chemicals used to kill undesirable or pathogenic (disease causing) organisms, and having a measurable residual at a level adequate to make the desired kill.

  (50) Disinfectant equipment--Equipment designed to apply or deliver a disinfectant (such as chlorine or bromine) at a controlled rate.

  (51) Diving board--A recreational mechanism for entering a pool, consisting of semi-rigid board that derives its elasticity through the use of a fulcrum mounted below the board.

  (52) Diving equipment for competition--Competitive diving boards and fulcrum-setting diving stands intended to provide adjustment for competitive diving.

  (53) Dwelling or rental dwelling--One or more rooms rented to one or more persons where a Class C pool or spa or a Class D pool is located.

  (54) Effective filter area--Total surface area through which designed flow rate will be maintained during filtration.

  (55) Effluent--The water that flows out of a filter, pump, or other device.

  (56) Facility(ies)--The pool or spa, restrooms, dressing rooms, equipment rooms, deck, enclosure, and other appurtenances directly serving the pool or spa area.

  (57) Feet of head--A basis for indicating the resistance in a hydraulic system, equivalent to the height of a column of water that would cause the same resistance (100 feet of head equals 43 pounds per square inch). The dynamic head is the sum of all resistances in a complete operating system.

  (58) Filter--A device that removes undissolved particles from water by recirculating the water through a porous substance (filter media or element).

  (59) Filter element--A device within a filter tank designed to entrap solids and conduct water to a manifold, collection header, pipe, or similar conduit and return it to the pool or spa. A filter element usually consists of a septum and septum support, or a cartridge.

  (60) Filter media--A finely graded material (for example, sand, diatomaceous earth, polyester fabric, and anthracite) that removes filterable particles from the water.

  (61) Floor--The interior bottom surface of a pool or spa.

  (62) Free available chlorine--That portion of the total chlorine remaining in chlorinated water that is not combined with ammonia or nitrogen compounds and that will react chemically with undesirable or pathogenic organisms. Combined chlorine plus free chlorine equals total chlorine.

  (63) Handhold--A ledge, coping, rope, railing, deck, or similar construction along the immediate top edge of the pool that provides a slip-resistant surface or grip.

  (64) Handrail--A railing that is intended to be gripped for resting and/or steadying a person while entering or exiting a pool or spa and that is typically part of a ladder, a set of steps, or deck-installed equipment.

  (65) Hardness--The amount of calcium and magnesium dissolved in water measured by a chemical test kit and expressed as parts per million (ppm) of equivalent calcium carbonate.

  (66) Heat exchanger--A device with coils, tubes or plates that absorbs heat from any fluid, liquid or air, and transfers that heat to another fluid without intermixing the fluids.

  (67) Heat pump--A refrigeration compressor, usually electrically driven, that is operated in reverse. To obtain heat, the evaporator side (cooling coil) is exposed to warm water, air or ground. The evaporator coil absorbs the heat from this source and transfers it to the condenser coil where it discharges the heat to the pool or spa to be heated.

  (68) Hot tub--A spa constructed of wood with sides and bottoms formed separately and joined together by pressure from surrounding hoops, bands, or rods; distinct from spa units formed of plastic, concrete, metal, or other materials.

  (69) IESNA--Illuminating Engineering Society of North America, 120 Wall Street, Floor 17, New York, New York 10005-4001, telephone (212) 248-5000.

  (70) Influent--The water entering a filter or other device.


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