Superfund Site Profile

The United States Environmental Protection Agency (EPA) is currently in the West Caln Township community performing an investigation for contaminated groundwater at the Old Wilmington Road GW Superfund Site (Site). Current activities include installation of several new monitoring wells to supplement the existing well network. Data from this new monitoring well network will help EPA determine the extent of groundwater contamination attributed to the Site. Once this data is received, EPA plans to sample potentially affected residential wells, as part of their environmental sampling efforts.

After this investigation, EPA will evaluate alternatives for cleaning up the groundwater in a Feasibility Study Report. The public will have the opportunity to share their input regarding the alternatives before the final cleanup is selected. EPA continues to work with local and state leaders, as well as community members. In addition to EPA, local and state agencies are associated with the monitoring of the properties that may be affected by the Site’s contamination. For any questions or concerns regarding the Superfund Site cleanup effort, please contact: Alexander Mandell 215-814-5517,


The Old Wilmington Road Groundwater (GW) Contamination site is located in West Caln Township in Chester County, Pennsylvania. EPA discovered the groundwater contamination during a Site Inspection (SI) for the nearby Perry Phillips Landfill Site. Residential wells were found to be contaminated with volatile organic compounds (VOCs) and manganese.  VOCs are chemicals that have the ability to turn into vapors or gases, potentially affecting human health and the environment.  

A well that provided water to about 60 residents of a private mobile home park was found to be contaminated with elevated levels of trichloroethane (TCE), a type of TCE. A system was placed on the well to treat and the contamination. To date, EPA and the Pennsylvania Department of Environmental Protection (PADEP) frequently monitor and test the system to ensure it is working correctly.  EPA completed an initial vapor intrusion study at the site in 2010. No systems needed to be put into place due to potential exposure. Investigations at the Site are ongoing.