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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />. <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />CBR leads to <br />WMD-weapons of <br />mass destruction. <br /> <br />More complex <br />systems lead to risk <br />of failure. <br /> <br />Weather <br /> <br />Public <br />health <br /> <br />Chemical, <br />biological, <br />radiological <br /> <br />Accidents <br />and breaks <br /> <br />Cyber and <br />power <br />failures <br />Terrorism, <br />sabotage, <br />securit <br />War and <br />ci viI unrest <br /> <br />utilities and fire in structures is a major concern. <br />Utilities have major responsibility to provide water to <br />fi ht fire. <br />Extreme weather-related events can create <br />emergencies. Freezes cause power outages, frozen <br />pipes, and related problems. Heat waves stress <br />s stems, and Ii htnin dama es controls and ower.. <br />Waterborne disease is biological and not well- <br />understood. Disasters can cause outbreaks, and <br />outbreaks can be disasters. Recent outbreaks included <br />cr tos oridium, Giardia, Le ionella, and E. coli. <br />Releases of industrial chemicals create major threats to <br />water systems. The Bhopal accident in India was an <br />example. Chernobyl frames the most serious <br />ex erience with nuclear lant accidents. <br />Accidents might include navigation spills, such as <br />Exxon Valdez, an aircraft crash into a supply source, <br />construction accidents, and others. Major breaks, such <br />as a water tunnel, are of great concern, if critical <br />facilities are not redundant. <br />Power failure is a threat to utilities. The run-up to <br />Y2K taught lessons about cyber attacks. <br /> <br />Terrorism and sabotage have many facets. Lessons <br />about security will be discussed. Sabotage comes in <br />different forms, even ranks. <br />At the beginning of 200 I, one- third of the world was <br />in conflict. s and civil unrest have heavy consequences <br />on water s stems. <br /> <br />September 11,2001 <br />showed us clearly <br />the threat of <br />terrorism. <br /> <br />~;r <br />