What is the recommended level of cyanuric acid in an outdoor swimming pool?

The recommended level of cyanuric acid in an outdoor swimming pool is typically between 25 and 50 parts per million (ppm). This range is considered ideal for stabilizing chlorine in outdoor pools, protecting it from degradation by sunlight. When chlorine levels are stabilized, they remain effective for longer durations, ensuring proper sanitation and reducing the frequency of chemical adjustments needed.

Cyanuric acid acts as a sunscreen for chlorine, allowing for a more efficient disinfection process. Maintaining levels within this range is crucial because too low a concentration could result in rapid loss of chlorine, leading to diminished sanitization, while too high a concentration can lead to potential issues with chlorine efficacy and water balance. Thus, the selected answer reflects best practices for pool management to maintain water quality and safety.