Dream about someone swimming in a pool indicates your tendency to keep your thoughts, ideas or feelings inside instead of expressing them. You have something that needs to be expressed and get out in the open. You are not letting something or something get in your way of your goals. This is a harbinger for messages from your subconscious or intuition. You may be feeling emotionally dirty or guilty and are trying to wash away the shame.
Someone swimming in a pool dream means a fear of being trapped in some situation and not being able to get out of it. You attack your problems head on. You need to utilize better time management. This suggests the point where the conscious mind meets the subconscious. It is better late than never.
If you dreamt about someone swimming in a pool:
You may find yourself making endless cups of tea for a string of people who come to you for sympathy. You will feel the need to spend some time with a loved one, just being alone together and enjoying that sense of silent communion and the depth of feeling that you both share. Better still, create a wonderfully romantic dinner, and celebrate your wonderful relationship.