The Air Force will apply new Environmental Protection Agency guidance for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) to its ongoing effort to determine if water supplies at its U.S. installations and in local communities are at risk for contamination.

http://www.af.mil/News/ArticleDisplay/tabid/223/Article/777074/air-force-applies-new-epa-guidance.aspx Air Force Civil Engineer Center Public Affairs