What is the recommended alkalinity range for swimming pool water?

The recommended alkalinity range for swimming pool water is 80 - 140 parts per million. Maintaining alkalinity within this range is crucial for several reasons. First, it acts as a buffer for the pH levels in the water, helping to stabilize the pH and prevent it from fluctuating too much. This stability is vital because drastic changes in pH can lead to issues such as skin irritation for swimmers, equipment corrosion, and compromised sanitizer efficiency.

Additionally, proper alkalinity helps protect the pool surfaces and equipment from potential damage caused by acid or alkaline water. When the alkalinity is too low, the water can become corrosive, leading to erosion of metal fixtures and pool surfaces. Conversely, if the alkalinity is too high, it can cause cloudy water and scaling, which can also be problematic for maintaining the pool's appearance and hygiene.

This range of 80 - 140 parts per million is widely accepted and helps ensure optimal performance of other water chemistry components, creating a safe and enjoyable swimming environment.