What does the Law of Dilution state?

The Law of Dilution, which pertains to aquatic facilities, indicates that during turnover, not all water in the pool is replaced with fresh water from the source or circulation system. Instead, it suggests that less than half of the water molecules actually pass through the filter during a single turnover cycle. Understanding this principle is crucial for aquatic facility operators, as it impacts the effectiveness of disinfection and chemical balance in the pool.

In practical terms, this means that while turnover is necessary for maintaining water quality by removing contaminants and redistributing chemicals, a single turnover process does not completely refresh the total volume of the pool water. This concept serves as a reminder that frequent monitoring and adjustment of water chemistry are essential to ensure the safety and comfort of pool patrons.