In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Water
Clean water means you will have progress and a good life and, if you drink it, someone will help you. If the water is cloudy then there will be problems and delays with things you wish to do.