What should a pool operator do if the water's turbidity increases?

When turbidity increases in a pool, it indicates that the water quality is deteriorating, often due to the presence of particulate matter, bacteria, or algae. Performing a thorough backwash is essential in this situation as it helps to clean the filters more effectively and remove the accumulated debris that may be contributing to the cloudiness. This process allows the filtration system to regain its efficiency, restoring the water clarity and overall quality.

In contrast, reducing filtration time would likely exacerbate the turbidity issue because the water would not be circulated and cleaned adequately. Increasing chemical use could help in some cases, but it may not address the root cause of turbidity, which is often a result of filter clogging. Lowering water levels is not a necessary response to increased turbidity and does not address the underlying problem of water clarity. Thus, a thorough backwash is the most appropriate action in this scenario to ensure the pool maintains safe and clear water.