Besides oxygen, the second most precious substance to the human body is clean water. Recently, the contamination of a major river in China by a 50-mile long jolt of benzene has led to a certain level of panic as the city of Harbin faces the prospect of no running water for at least several days until the contanimants flow on by. Here's one article on the situation. Apparently people are starting to panic buy, many are fleeing the city, and there are wild rumors flying around, too, like fears of impending earthquakes. If everyone simply had a 72-hour supply of water and some basic sanitation arrangements, this serious industrial accident would have been little more than a big inconvenience to most ordinary folks.