Dreaming of a pool is a sign of both status and relaxation. Thus, dreaming of a pool could potentially be a marker in social class or even desires. Families often want a pool due to what it offers, a meeting spot for friends and a way to cool off on a hot day. The manifestation of a pool in your dreams is perhaps a want for that status, for that marker in society.
Seeing a pool of water in your dreams denotes a feeling of wanting to be cleansed and to able to understand your emotions and thoughts better.