What is a key feature of proper lighting in pool facilities?

Proper lighting in pool facilities is crucial for supporting operational visibility. Adequate lighting ensures that lifeguards and pool staff can effectively monitor the pool area and its users, which is essential for maintaining safety. When the pool is well-lit, potential hazards can be more easily spotted, and swimmers can be observed closely, reducing the likelihood of accidents.

Good lighting not only enhances safety but also contributes to the overall functionality of the facility. Effective illumination helps in identifying swimmers who may be in distress and allows staff to communicate clearly in emergencies. Moreover, having appropriate lighting can create an inviting environment for users, but the primary focus remains on ensuring that the area is visible and safe for everyone.

The other options, while relevant to aspects of lighting, do not address the primary function that lighting serves in a pool facility. For instance, while aesthetic value is important for ambiance, it does not ensure safety, which is the highest priority in such environments. Similarly, increasing energy costs is a drawback of inadequate planning rather than a key feature, and limiting visibility to the water surface is counterproductive to safety and monitoring efforts.