To see a swimming pool in your dream symbolises relaxation, calmness, luxury and ease. You need to take a break. Alternatively, a swimming pool suggests that you need to acknowledge and understand your feelings. It is time to dive in and deal with those emotions. You need to cleanse yourself and wash away past hurts. Consider the depth of the pool. If you were swimming on the deep end, then it means that those emotions are deeply seated and may be harder to confront.. You will need to work through it, no more matter how difficult. If you are swimming on the shallow end, then it implies that you should be able to easily deal with your feelings.

To see an empty swimming pool in your dream suggests that you are literally feeling empty and devoid of emotions. 

To dream that the swimming pool is filled with trash indicates that you are leading a lifestyle of excess. You need to tone it down and discard some of the negative emotions in your life.

To dream of a rooftop swimming pool indicates spiritual cleansing. It may also mean that you are enjoying all your successes.