What is the maximum safe level of cyanuric acid in pool water?

The maximum safe level of cyanuric acid in pool water is 50 parts per million. Cyanuric acid acts as a stabilizer for chlorine, helping to protect it from being broken down by sunlight. While it is important for maintaining chlorine effectiveness, having too high a concentration can lead to issues with water chemistry, including decreased effectiveness of chlorine and the potential for algae growth.

In typical pool operations, maintaining cyanuric acid levels at or below 50 parts per million helps ensure that the chlorine remains effective in sanitizing the water. Levels exceeding this amount can result in the need for higher chlorine concentrations or altered maintenance practices to keep the pool water safe and clean. This understanding allows pool operators to maintain functional and safe swimming environments, reinforcing the importance of regular testing and balancing of pool chemistry.