Article courtesy of Matthew Umstead | May 27th, 2016 | Herald-Mail Media | Shared as educational material.
After Martinsburg experienced water contamination due to the presence perfluorooctanoic acid, known as PFOA, and perfluorooctane sulfonate, or PFOS, officials took some tests in groundwater sources in order to find the roots of the contamination. The chemicals are highly toxic above a certain exposure level. PFOA is used in numerous consumer products while PFOS is used in firefighting foam. Currently, the US Air Force Base nearby is undergoing investigation as there are claims that the pollution came from their usage of the chemicals during training periods.
Read more about it here: http://bit.ly/2fe6auR.