EPA Superfund site
NAVY SHIPS PARTS CONTROL CENTER
Human exposure is NOT currently under control
Data limitations: Proximity to a Superfund site boundary does not mean your property is contaminated. EPA site boundaries show the area designated for cleanup, not the full extent of contamination. Groundwater plumes can extend beyond site boundaries. This tool shows publicly available EPA federal data. It is not affiliated with or endorsed by EPA, and is not a substitute for a professional environmental assessment.
About this site's exposure pathways
As of April 2026, Navy Ship Parts Control Center (Mechanicsburg) Superfund site is considered “Current Human Exposure Not Under Control” (HENC); this designation is the same as for year 2025. Newly identified contaminants, per-and polyfluoroalkyl substances (PFAS), have been detected in private drinking water off-base. Some residential drinking water wells have been identified with perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) values that exceed the Pennsylvania Maximum Contaminant Levels (MCLs) and EPA MCLs for PFOA and PFOS that have not been addressed. Currently, activities planned by the Navy to address this pathway are providing alternative drinking water via public water connections to each home (planning phase) and continuing periodic sampling at POU filters installed at homes exceeding 12ppt; these homes will be receiving public water connections. Homes with POU filters and pending public water connections exceed 12 ppt. Homes that fall between 4 ppt and 12 ppt have not been addressed with POU filters or planned public water connections. A remedial investigation is ongoing to determine the nature and extent of the PFAS contamination at the base. If you are impacted by the risks inherent at this site, please contact Cathy Mann at 717-605-2179. EPA currently anticipates that human exposure will be under control by September 2026 because POU filters alternative drinking water will be provided to eliminate this exposure pathway.