What is the ideal range for total alkalinity (TA) in pool water?

The ideal range for total alkalinity (TA) in pool water is indeed between 80 and 120 ppm (parts per million). Maintaining TA within this range is crucial because it serves as a buffer for pH levels, helping to stabilize them against external influences, such as rainwater and swimmers entering the pool. When alkalinity is adequate, it helps prevent quick fluctuations in pH, which can lead to issues like scaling or corrosion of pool surfaces and equipment, as well as discomfort for swimmers.

Total alkalinity works by providing carbonates and bicarbonates that help keep the pH stable. If the TA level is too low, it can result in rapid changes in pH levels, making water more acidic and potentially harmful to both the pool infrastructure and the health of swimmers. Conversely, if TA is too high, it can lead to difficulty in adjusting pH and can contribute to cloudy water and scaling.

Thus, aiming for total alkalinity within the 80-120 ppm range ensures that the water chemistry remains balanced and safe for use, providing a more enjoyable experience for pool users.