This appears to be a little garbled by being repeated through people who have no idea what they are talking about. My interpretation is that the pump was neither grounded or bonded and was shorting one of the hot lines to the pump chassis, which was in contact with the water. Since the bonding system was most likely connected to ground, which in turn is connected to neutral, that would create a current through the water from the pump to every location that was bonded.An investigation determined that a faulty pool pump caused the incident. Inspectors said unconnected ground wires were supposed to take the currents to the ground and away from the pool but they weren't working properly.