What happens to chlorine after it disinfects the water?

Chlorine is utilized in pool water for its effective disinfecting properties, targeting harmful pathogens to ensure water safety. After chlorine performs its role in disinfection, it does not simply vanish or become fully inactive. Instead, it often combines with organic materials, such as sweat, urine, or other contaminants in the water. This chemical reaction between chlorine and organic matter results in the formation of chloramines, which are secondary compounds.

Chloramines can be less effective at sanitation compared to free chlorine, which is the form used primarily for disinfection. They are also responsible for the strong, unpleasant odor often associated with chlorinated pools.

Understanding this process is essential for pool operators, as it highlights the importance of regularly monitoring and adjusting chlorine levels in the water to maintain optimal sanitation and minimize the impact of chloramines.