Although water reduces the resistance of the human body and thus makes it more susceptible to electrical shock, it is the plumbing that is the main hazard. Take, for example, a person who likes to watch a plugged-in TV while sitting in the bathtub. If the TV is not connected to a GFI-protected circuit and fell into the tub, the water would come in contact with the 120-volt wires in the TV. With the metal plumbing of the tub connected to ground, the grounding path would cause a current through the water. Unfortunately, this translates into a bad day for the bather; an mp-3 player or battery-powered smart phone is much safer.