Computer Glitch Causes Water Outage

Event Year: 2010 Reliability: Confirmed
Country: United States
Industry Type: Water/Waste Water

Two water tanks emptied leaving residents without water for about an hour and 15 minutes.  A computer indicated that the two tanks were full.  The tanks were acutally dropping and not refilling.  There is an alert system to detect low water levels, but there was no warning.


Water level monitors did not detect the dropping water levels.  Two water tanks went dry and residents were without water for an hour and 15 minutes.

Action Description: A redundancy system will be added to provide a secondary monitor in the event that the main one fails.