50 of Wisconsin's largest communities have taken part in drills in the unthinkable scenario that terrorists have contaminated their water supplies. Mike Simonson reports from Superior.

Madison, Green Bay, Ashland, Milwaukee and LaCrosse are among the communities that sent health, law enforcement and elected officials to play a table-top exercise of "our water supply has been poisoned". Department of Natural Resources Water Security Coordinator Steve Elmore says it's important a plan is in place. "We're not looking at physical security. We're not looking at fences or cameras or motion sensors. That's not what we're really looking at here. We're looking at the processes that are in place for responding to an event." So a $300,000 U.S. E.P.A. grant is paying the state to teach towns and cities how to deal with a bad water supply. "People take tap water for granted. They think it should be clean and safe to drink. So you do have a big component of trying to reassure the public and make sure they knolw what's going on and what to do with the water, if they should be drinking it or if they shouldn't be drinking it." Next year, communities like Hayward, Rice Lake, Oshkosh, Janesville and Rhinelander are among the 65 utilities that will also go face to face with an exercise that everyone hopes will never have to be used.

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