Turnover rates for filtration systems (verify with code requirements)
Kiddy areas, either alone or adjacent to the pool (13” water depth or less) should turnover in 15 minutes. Provide a floor or wall inlet line in the filter room to create a chlorine option for the future. Consideration should be given to draining or flushing the drain to the sewer.
Kiddy areas, either alone or adjacent to the pool (18” water depth or more) should turnover in a maximum of 2 hours. For the implementation of a future chlorine unit, a separate floor inlet line should be run from the filter room to the pool.
It is accepted rule-of-thumb in the industry that after four turnovers enough of the actual water molecules in the pool have had a chance to pass through the filter and chemical treatment system that it’s considered a complete turnover of the pool. The following is the percentage of water molecules in the pool that has been filtered after each designed turnover:
Many DOH’s recognize these figures and it’s for that reason that the turnover rate requirement for most commercial swimming pools operations is six hours.
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