What is the ideal pH range for swimming pool water?

The ideal pH range for swimming pool water is 7.2 to 7.8. This range is considered optimal because it ensures a balance that promotes swimmer comfort, effective disinfection, and equipment longevity. A pH level within this range helps minimize skin and eye irritation for swimmers and maximizes the performance of chlorine as a sanitizer, which is crucial for keeping the pool water clean and safe.

When pH is below 7.2, the water becomes acidic, potentially leading to corrosive effects on pool equipment and surfaces, as well as discomfort for swimmers. Conversely, if the pH exceeds 7.8, the water starts to become too basic, which can lead to scaling and cloudy water. Maintaining the pH within the ideal range is essential for achieving a balance that keeps both the pool environment safe and pleasant for users.