Aquatic Facility Operator Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

High total dissolved solids (TDS) in a pool can significantly impact water clarity and the effectiveness of disinfectants. As TDS levels rise, the water can become cloudy, which not only affects the aesthetic quality of the pool but also hinders the proper functioning of sanitizers. Cloudy water indicates that there are many dissolved substances in the water, which can interfere with the ability of disinfectants like chlorine to effectively kill pathogens.

Furthermore, elevated TDS levels can lead to issues such as scaling and a change in the chemical balance of the water, requiring more effort and resources to maintain optimal conditions. Regular monitoring and management of TDS levels are essential to ensure that water remains clear and safe for swimmers, and that the disinfectants are operating at their maximum efficiency.

While other options may suggest benefits such as enhanced swimmer comfort or algae prevention, the reality is that high TDS levels often compromise pool operations rather than improve them.