Why must the pH of swimming pool should be kept at their level?
Most pools use chlorine as a disinfectant and the pH level has a significant effect in the disinfectant properties of chlorine. The active disinfectant in chlorine is hypochlorous acid. The proportion of hypochlorous acid present in chlorine is greater at lower pH levels. However, if the pH level goes too low, it will become corrosive and start attacking the fabric of surfaces it comes into contact with. Therefore, there ideal recommended range for pH levels in swimming pools is 7.2 - 7.6.