What does CYA stand for in pool chemistry?

CYA stands for cyanuric acid, which is a compound used in pool chemistry to stabilize chlorine and protect it from degradation by sunlight. In outdoor swimming pools, chlorine can rapidly dissipate due to UV rays, reducing its effectiveness in sanitizing the water. The presence of cyanuric acid helps to form a protective bond around chlorine, allowing it to remain active for longer periods.

Maintaining the proper level of cyanuric acid in pool water is crucial for effective sanitization and overall water maintenance. It helps to enhance the efficacy of chlorine, especially in sunny environments, by preventing its breakdown. This stabilization is essential for ensuring that the pool remains hygienic and safe for swimmers.

Cyanuric acid also plays a role in balancing pool chemistry, as it needs to be measured and managed alongside other chemicals and compounds in the pool. Keeping the appropriate concentration of CYA will also help in determining the appropriate level of free chlorine needed, as higher levels of cyanuric acid may require higher levels of chlorine to achieve the same level of disinfection.