I have a finished basement and each time I take a shower or run the dishwasher, a small puddle of clear water appears on the basement floor and then disappears within a few hours. It appears next to a wall where my water service enters the house and I see no evidence of water anywhere else - like in the ceiling. The shower and dishwasher are located on the far side of the house from the water entry and where the puddle occurs. I presume the water is coming from behind the wall. Where do you even start looking for this kind of a leak when it means ripping off the drywall? It seems strange that a leak would occur near the main water entry and only get activated when operating the water elsewhere in the house. Any thoughts folks have would be appreciated.