A. All swimming pools shall be provided with a recirculating skimming device or overflow gutters to remove scum and foreign matter from the surface of the water. Where skimmers are used for private pools, there shall be at least one skimming device for each one thousand (1,000) square feet (93 m2) of surface area or fraction thereof. For public pools where water skimmers are used, there shall be at least one skimming device for each six hundred (600) square feet (55.8 m2) of surface area or fraction thereof. Overflow gutters shall not be less than three inches (3") (76 mm) deep and shall be pitched to a slope of one unit vertical to forty eight units horizontal (1:48) toward drains, and constructed so that such gutters are safe, cleanable and that matter entering the gutters will not be washed out by a sudden surge of entering water.
B. The swimming pools' circulation systems shall consist of pumping equipment, hair and lint catcher, filters, together with the necessary pipe connections to the pool inlets and outlets, facilities and pipe connections necessary for backwashing filter, and filters, and facilities and equipment for disinfecting the pool water.
C. Every swimming pool shall have a recirculating system with an hourly capacity equal to the pool volume divided by eight (8) (i.e., an 8 hour turnover).
D. The recirculation system pump shall have sufficient capacity to discharge the volume of water required for an eight (8) hour turnover of the pool against the maximum head in the recirculating system.
E. The pump used for backwashing filters shall have sufficient capacity to provide a filter backwash rate of at least twelve (12) gallons per minute per square foot of filter area.
F. A hair and lint catcher or strainer shall be installed on the suction side of the circulation pump to prevent hair, lint and other extraneous matter from reaching the pump and filters. Hair and lint catchers shall be so designed that they can be easily dismantled for cleaning and inspection and shall be so located as to be easily accessible for cleaning. The design features shall be as follows: Water shall pass through the strainer from the outside; the strainer is made of noncorrosive material; the width or diameter of strainer openings shall be not more than one-eighth inch (1/8"); the area of the strainer openings shall be at least five (5) times the cross sectional area of the inlet pipe to the strainer.
G. Recirculating systems shall contain rapid pressure filters. Sufficient filter area shall be provided to filter the entire contents of the pool in eighteen (18) hours at the rate of not more than three (3) gallons per square foot of filter area per minute. The filter backwashing facilities shall be sufficient to backwash at a rate of twelve (12) gallons per minute per square foot of filter area. All backwash water and effluents shall be discharged through an indirect connection. Pressure filters shall be equipped with readily accessible air relief valves, loss of head or pressure gauges on the inlet and outlet pipes, and an access head or hole large enough to permit inspection, maintenance and repair work. Sight glasses that can be easily removed for cleaning shall be provided in effluent line from the filter units.
H. Equipment shall be provided for the disinfection of all pool water. Any disinfection method using materials other than chlorine compounds shall be subject to the approval of the building officer. Disinfection equipment installed for the use of chlorine compounds shall have sufficient capacity to maintain a minimum free chlorine residual of five-tenths (0.5) parts per million. The disinfectant shall be introduced into the recirculation system ahead of the filters.
I. Gaseous chlorination system shall not be made use of as a disinfection method of pool water. (Ord. 06-822, 3-14-2006)