http://articles.mercola.com/sites/articles/archive/2005/02/09/mercury-chlorine.aspxFish, the nearly perfect health food for most, is likely unsafe for most to regularly eat. According to a report, nine U.S. chlorine factories are among the nation's largest sources of mercury, one of the most hazardous and ubiquitous contaminants. EmissionsenCommunityServer 2008.5 SP1 (Build: 31106.3070)