At the request of the US Navy, the Environmental Protection Agency (EPA) continues to test and monitor the already tested private drinking water wells in the Warminster, Pennsylvania area as the result of contamination found at the Naval Air Development Center (NADC) in Warminster. The contaminants of concern are two Perfluorinated Compounds (PFCs), Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoic Acid (PFOA).
Test samples taken by the local public water supplies as part of the federal Unregulated Contaminant Monitoring Rule 3 (UCMR) show levels of PFOS above EPA�s provisional health advisory level (HAL) in a few public supply wells. Those wells have already been taken off-line and are not currently supplying water to the public. At this time, PFOA has not been detected above the provisional HAL at any of the other public water supply wells. The purpose of the residential testing is to determine if private wells have been impacted by PFOA and PFOS and if additional actions are needed to protect human health and the environment. EPA is coordinating closely with the U.S. Navy, Pennsylvania Department of Environmental Protection (PADEP), the Centers for Disease Control and Prevention (CDC)/Agency for Toxic Substances and Disease Registry (ATSDR), and Local Officials and Public Water Authorities.
To date, EPA has tested more than 114 private wells near NADC and the Navy is providing bottled water to 13 properties that have levels of PFCs at or above the EPA�s provisional health advisory level (HAL).