Dream about underground water is a clue for your need to lessen something in your life. You need to acknowledge and take notice of your subconscious. You need to be more hands on in some situation or relationship. It points to ignorance. Your life goals are in conflict with your belief system.
Underground water dream is an indication for the intellect or secrets of the mind. You become consumed by your passion. You need to step back and look at the wider perspective. This is about masculinity. You may be yearning for a baby or that you are expecting a baby.
If you dreamt about underground water:
You may well encounter a situation in which someone is trying to pull the wool over your eyes in a certain romantic situation. So don’t be tempted to travel further down any path than feels even slightly uncomfortable for you. At this moment the cost of doing so may be more than you are willing to pay. So just for now take it easy.