A water use and/or a water energy use monitoring apparatus that is affixed to the hot and cold main water supply piping for continuously (or on demand) monitoring and displaying the water use within a residential or commercial building. A first wire or wireless communication is incorporated to electronically communicate with a remote display for viewing by the owner of a commercial building or occupier/resident of a home. A second optional wire or wireless communication can be incorporated that can be monitored by civil, commercial, governmental or municipal operators or agencies, using a remote display and/or recorder or by a secure wire or wireless communication network (e.g. cell phone communication technology). A third wireless communication can be incorporated to electronically communicate water parameter data utilizing typical cell tower technology and/or mesh network technology.