Douglas County Rules and Regulations for Swimming Pools - Cobb ...

consist of pump(s), piping, filter(s), water conditioning and disinfection equipment, and otheraccessory equipment that will clarify, condition, and disinfect the water in accordance withthis article. All pool equipment shall meet the standards set forth in the most recent editionof ANS I/NSF-50, “Circulation System Components a nd Related Materials f or SwimmingPools, Spas/Hot Tubs” or other, independent testing and certifying organization, and shall beapproved by the department. The equipment shall be operated continuously on a twenty-four(24) hour basis to obtain the minimum required number of four (4) turnovers per day, or oneturnover every six (6) hours. All pool piping systems shall be designed to accommodate onehundred percent (100%) of the design flow rate. During normal pool operation, a maximumof t wenty pe rcent (20%) of t he circulation f low s hall be t hrough t he m ain dr ain and aminimum of eighty percent (80%) shall be through the overflow gutters or skimmers. Allcirculation system c omponents, i ncluding f ilter(s), pum p(s), ha ir l int s trainer(s) and ot hersimilar c omponents, s hall f unction pr operly and be m aintained i n a c lean c ondition. F orcirculation systems ut ilizing ove r-the-gutter c irculation, a n a pproved s urge de vice s hall b eprovided. T imers us ed i n c onjunction w ith any circulation e quipment a re pr ohibitedwhenever the pool is open for use, but may be used when the pool is not open during the offseason.(1) Pumps. Pump(s) shall be adequate in number and capacity to provide the requiredpool turnover rate. Pumps shall supply the design circulation and backwash flows ata d ynamic he ad s ufficient t o ove rcome f riction l osses i n t he pi ping, a ppurtenancesand m aximum f ilter he ad l oss. If m ore t han one pum p i s ut ilized i n de sign orconstruction, t hen a ll o f t he pum ps s hall be t he s ame i ncluding m anufacturer, s ize,capacity, and other similar factors. Pump performance curves shall be submitted withthe plans. An adequately sized strainer shall be provided on t he suction side of thecirculation pum p. S econdary pum ps, i f us ed, on va cuum filter s ystems s hall beprotected b y a s trainer s ized t o a dequately pr otect t he pum p. S trainers s hall beinspected as often as necessary and maintained in a clean condition.(2) Filters. F ilter(s) s hall be s ized and maintained to accommodate t he r equireddesign circulation flow. If more than one filter is utilized in design or construction,then all of t he filters s hall be t he s ame i ncluding m anufacturer, size, capacity, andother similar factors.(3) Inlets. A minimum of two (2) adjustable inlets installed flush with the pool wallor floor shall be located in conjunction with the proposed method of circulation so asto provide effective, uniform circulation of the incoming water throughout the pooland to prevent stagnant areas. The total number of inlets shall be calculated based onone (1) inlet for fifteen (15) linear feet of pool perimeter, or major fraction thereof.Inlets s hall be e venly s paced e ither a long t he pool pe rimeter or on t he pool f loor.Inlets shall be installed below the normal water level. F loor inlets shall be providedon a ll pool s w ith s urface a reas e xceeding t wo t housand s quare f eet ( 2000 s . f .).Additional inlets m ay b e us ed or m ay be r equired in a ddition to the minimumrequired number of floor inlets for steps, seats, and sun/tanning shelves to facilitatecirculation. W all i nlet f ittings s hall not pr oject more t han one and one -half i nches(1½”) from the surface of the pool wall.Cobb and Douglas County Public HealthDouglas Rules and Regs for Swimming Pools20