What is the acceptable range for pH levels in a swimming pool?

The acceptable range for pH levels in a swimming pool is between 7.2 and 7.8. This range is crucial for several reasons. First, maintaining a pH level within this range ensures optimal chlorine efficacy; if the pH is too low, chlorine tends to be overly aggressive, leading to irritation of the skin and eyes, while a pH that is too high reduces chlorine effectiveness, making the pool less sanitary. Additionally, a balanced pH contributes to the comfort of swimmers and helps prevent scaling on pool surfaces and equipment. A pH range of 7.2 - 7.8 is also considered ideal for swimmer hygiene and overall water quality, promoting a safe and enjoyable swimming experience.