EPA Superfund site
ORANGE VALLEY REGIONAL GROUND WATER CONTAMINATION
Exposure status: insufficient data
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 May 2026, the Orange Valley Regional Ground Water Contamination Superfund site is considered “Insufficient Data to make a Human Exposure evaluation” (HEID). This status does not necessarily mean that unacceptable exposures are occurring. HEID means that current information is not sufficient to determine whether actual or reasonably anticipated human exposures are occurring above acceptable risk levels across relevant exposure pathways in the City of Orange Township and the Township of West Orange, N.J. Samples collected indicate the presence of volatile organic compounds (VOCs), including tetrachloroethylene (PCE), trichloroethylene (TCE), and cis‑1,2‑dichloroethene (cis‑1,2‑DCE), in area groundwater.
Planned activities to collect sufficient information include completing the Remedial Investigation/Feasibility Study (RI/FS) to define the nature and extent of contamination and preparing a Human Health Risk Assessment (HHRA) to evaluate exposure pathways, such as use of private wells and other interactions with groundwater. EPA will evaluate indoor air as needed based on data results and risk assessments. EPA currently anticipates there will be sufficient data to make a Human Exposure determination by September 2027 because the RI/FS and HHRA are expected to be completed by that time.
If you live or work near the site, you can reduce your exposure risk by using municipal water where available or testing private wells before use. EPA will continue to meet with residents and stakeholders, issue public notices and updated fact sheets, and keep the site profile on EPA’s website up to date. For more information, please contact the Community Involvement Coordinator Drew Curtis via the site webpage or at 212-637-3726 or [email protected].