If the dreaming sees water in his dream and notes then that it evaporates, this is a sign for the fact that he recognises what can change if he learns to handle properly with his emotions.
If the dreaming extends his consciousness, the energy can be turned in certain situations in the positives. It is in the power of the dreaming to create the possibility for changes.
Dream interpretation and meaning : Evaporate
The combination of fire and water is an alchemistisches symbol for the transforming strength of the mind.