pH stands for “potens hydrogen,” which is Latin for the “power of hydrogen (ion).” As a
water balance factor pH has the most impact of properly balanced water and user comfort. The recommended pH of pool/spa water is slightly alkaline (7.2—7.4). The pH of tears from a human eye is about 7.5. To assist in user comfort, the ideal range for pH is 7.4 to 7.6. The acceptable range is 7.2-7.8. There are many influencing factors that affect the pH of pool or spa water. The include user waste, disinfectants, source water, air-borne debris, water balance chemicals, aeration, and evaporation.
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