What could be a consequence of not using a pool cover?

Choosing not to use a pool cover can lead to increased evaporation from the water surface, which in turn can significantly raise water costs. When the surface of the pool is exposed to air and sunlight, water evaporates more rapidly, particularly in warm or windy conditions. This not only results in the need to refill the pool more frequently—thereby incurring costs associated with water usage—but can also lead to increased chemical costs as more chemicals may be required to maintain balanced water chemistry.

In contrast, a pool cover helps to seal the pool, minimizing water loss due to evaporation, maintaining pool temperature, and reducing the need for additional water and chemicals. This is particularly important in areas where water conservation and cost management are priorities. Therefore, the implications of not using a pool cover point clearly to the financial and resource-related consequences highlighted in the chosen answer.