http://articles.mercola.com/sites/articles/archive/2006/04/06/americans-exposed-to-too-much-fluoride.aspxFederal standards do not guard against excess fluoride in drinking water damaging bones and teeth. Enamel Fluorosis Children exposed to water at or near the maximum fluoride limit set for the government risk developing severe tooth enamel fluorosis, whichenCommunityServer 2008.5 SP1 (Build: 31106.3070)