What does the term "water circulation" entail in pool management?

The term "water circulation" in pool management specifically refers to the continuous movement of water through the pool's filtration system. This process is crucial for maintaining water quality, as it ensures that water passes through the filtration equipment, where impurities, debris, and contaminants are removed. Effective water circulation helps to evenly distribute chemicals added to the pool water, facilitates the removal of organic waste, and contributes to a clearer and healthier swimming environment.

The other options touch on various aspects of pool maintenance but do not accurately define water circulation. Draining and refilling the pool is a different process that is typically only done in specific situations, such as major maintenance or repairs. Adding chemicals is essential for water treatment but is a separate task from the circulation process itself. Inspecting water quality pertains to testing and assessing the chemical balance and purity of the water, which is critical but also distinct from the act of ensuring water circulates properly through the system.