Tucked away in an unassuming 20-foot trailer, a labyrinth of pipes, valves, pumps and gauges feed four enormous fiberglass wrapped granular activated carbon filter cylinders at the Horsham Air Guard Station water treatment facility. Installed and operating on June 30, 2016, the filters will act to scrub perfluorooctane sulfonate and perfluorooctanoic acids from the ground water that supplies the base’s water needs. Initial test results as to the levels of the PFCs in the water supply after installation are pending. (U.S. Air National Guard photo by Master Sgt. Christopher Botzum)