NCC 2016 Volume Two
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Tas 2 Swimming Pool Water Recirculation and Filtration
Limitation
Tas 2 does not apply to a swimming pool associated with a Class 1 building if the depth of water is less than 300 mm and the volume of the pool does not exceed 15 m3.
Swimming pools must be provided with an adequate water recirculation, disinfection and filtration system which is suitable and safe to use.
Compliance with the provisions of Tas 2.2 for a swimming pool associated with a Class 1 building with a depth of water more than 300 mm and volume exceeding 15 m3 satisfies Performance Requirement Tas 2.1.
A water recirculation, disinfection and filtration system in a swimming pool must provide for—
the inlet and outlet openings for the purpose of water recirculation to be so located that water movement is continuous from inlet to outlet; and
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the recirculation of water to be so designed that the pool contents are recirculated not less than once—
the water filtration rates to not exceed 12 250 L/m2 of sand filter bed per hour, or an equivalent rate in other filter media.