The Process Water to the TapWater supply usually comes from surface water such as lakes, rivers and seas.  In many communities, water is pumped from aquifer located underground then routed to a treatment plant, where a variety of physical and chemical processes render the water safe to drink.  Photo: 2009 Situated by a lake, a building on the grounds of the water treatment plant in downtown Austin, Texas, United States. http://www.flickr.com/photos/jimnix/3654215458/Diliberate ContaminationWithout much consideration of the acquisition, treatment, and distribution of water, these processes have been geared toward providing high quality of water for over a century.  But since the 1990s and the evolution of new terrorist targets, the threat of a deliberate contamination of water supplies has become more probable.  Kunze (1997) identified 833 major destructive acts at US public utilities between 1986 and 1995.VulnerabilitiesAfter the 11 September 2001 attacks…

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