The overall system is linked to a SCADA which notifies on-call system operators when the pumps have failed or if water is too low in the storage tanks.  For some unknown reason, SCADA did not alert personnel to the low water levels or pump failure alerts.  The holding tank can fluctuate between 17 and 21 feet of water.  The water level was showing at 6 inches of water in the bottom of some of the storage tanks.  Nine of the 15 tanks were critical.  The failure was between the water treatment plant and the water collection well.  Residents woke up to dry taps.

Lake Havasu City residents had little or no water flow.