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ANSI/APSP 11-2019
American National Standard for Water Quality in Public Pools and Spas
Public swimming pools and spas. This standard covers public swimming pools and spas to be used for bathing and operated by an owner, licensee, or concessionaire, regardless of whether a fee is charged for use. Public swimming pools covered by this standard. Public swimming pools covered by this standard include all the classes in section 2 below. Pools designed for interaction with marine life have special requirements and are not covered by this standard. Variation in methods. This standard provides specifications for water quality parameters, but does not specify the technologies needed to achieve these values.
APSP: Association of pool and spa professionals [apsp]