What is the pH operating range for swimming pools?

The pH operating range for swimming pools is typically set between 7.2 and 7.8. This range is crucial for a variety of reasons. First, maintaining a pH level within this range ensures that chlorine and other sanitizers work effectively to keep the pool water sanitized. If the pH is too low, chlorine becomes more aggressive and can cause irritation to swimmers' skin and eyes. On the other hand, if the pH is too high, chlorine becomes less effective, leading to potential microbial growth and compromising water quality.

Additionally, a pH within the 7.2 to 7.8 range helps in preventing the corrosion of pool equipment and surfaces. Too acidic water can damage metal fixtures, while water that is too alkaline can lead to scale formation, which clogs filters and reduces circulation efficiency.

A pH value below 7.2 indicates more acidic conditions, which can intensify comfort issues for pool users, and a value above 7.8 signals increasing alkalinity, leading to potential cloudiness in the water and a greater likelihood of unsanitary conditions developing. Maintaining the pH in this specific range is thus an essential part of effective swimming pool management, supporting both safety and operational efficiency.