The Shanghai municipal government said in an online announcement that 5,916 swine carcasses had been retrieved from Huangpu River by 3 p.m. Tuesday, but added that municipal water remains safe." At what point will the dead pigs begin to pose a health challenge? 10,000? 100,000? What is the maximum Chinese Surgeon General RDA of dead pig in one's drinking water? And whatever it is, how long until, pulling a page from Fukushima, it is quickly doubled? But perhaps the biggest question is what is causing this mass death phenomenon, and what does it mean for the quality and safety of other pigs in circulation?