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What are the chemical standards for a swimming pool or spa?

April 26, 2017chemical spa Standards swimming pool

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What are the chemical standards for a swimming pool or spa?

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• The Maricopa County Environmental Health Code Chapter VI, Section 2, Regulation 4 requires disinfection residuals and alkalinity to be maintained as follows: • Whenever chlorine, or a chlorine compound, is employed for disinfection the amount of free chlorine residual in the water shall not be less than 1.0 ppm or more than 5.0 ppm for public and semi-public swimming pools, and shall not be less than 3.0 ppm or more than 5.0 ppm for a spa, at a pH of 7.2 to 7.8. • Whenever bromine is employed for disinfection the bromine residual in the water shall not be less than 2.0 ppm or more than 4.0 ppm for public and semi-public swimming pools, and shall not be less than 3.0 ppm or more than 5.0 ppm for a spa. • Total alkalinity for pools and spas shall be maintained between 60 ppm and 180 ppm. The pH of the water should be maintained between 7.0 and 8.0.