Why is high pH a problem in swimming pools?

High pH levels in swimming pools can create several issues that affect water quality and swimmer comfort. When the pH is elevated, it reduces the effectiveness of chlorine, which is the primary sanitizer used to keep the water clean and free from harmful bacteria and viruses. Chlorine works best at a pH level between 7.2 and 7.6; when the pH rises above this range, chlorine becomes less effective, leading to poor sanitation and increasing the risk of waterborne illnesses.

Moreover, high pH can cause irritations to the eyes of pool patrons. Swimmers may experience discomfort or redness if the water's pH is too high, which can deter people from enjoying the pool.

Finally, elevated pH levels can contribute to cloudy water conditions. High pH can increase the formation of calcium carbonate precipitates, making the water appear cloudy and less visually appealing. This can detract from the overall swimming experience and may indicate underlying chemical imbalances in the pool.

Given the multiple issues associated with high pH, including irritation, reduced effectiveness of chlorine, and the potential for cloudy water, it is clear that the combined effects warrant the conclusion that all these problems are interconnected.