Skip to Page Content Governor | General Assembly | Courts | Elected Officials | State Agencies
  Photo: Featured Delaware Photo
  Phone Numbers   Mobile   Help   Size   Print   Email

Skip Navigation LinksDNREC : Division of Waste & Hazardous Substances : Site Investigation & Restoration : Newark South Groundwater Plume Site

 Newark South Groundwater Plume Site


The Newark South Groundwater Plume SiteFollowing nearly two decades of successful efforts by the City of Newark, DNREC and the Division of Public Health Office of Drinking Water (DPH ODW) to maintain a safe drinking water supply for the city, DNREC is requesting federal assistance from the U.S. Environmental Protection Agency (EPA) in resolving groundwater concerns in the Newark area and determining the sources of contamination there. The Newark South Groundwater Plume Site encompasses an area of southeast Newark along Route 72 between Interstate 95 and Route 4 (East Chestnut Hill Road) in New Castle County.

The City of Newark has six municipal wells located in the area where groundwater has been impacted by volatile organic compounds (VOCs). VOCs are organic compounds found in some industrial and commercial products that can cause adverse human health effects. Newark’s drinking water is treated by the city to remove VOCs from the water supply, enabling the water to continue meeting both federal and the more stringent state safe drinking water standards. The source of the groundwater contamination has not been identified, despite numerous environmental investigations and remedial efforts by DNREC at sites of potential concern. DNREC subsequently has requested EPA’s assistance to help fully investigate the site and identify the sources of the VOCs contamination in the groundwater.

The EPA will use Superfund authority and resources to determine if the site warrants further long-term investigation. EPA’s investigations could result in the site’s being listed on the National Priorities List (NPL). As part of the listing process, potentially responsible parties that contributed to the contamination in the groundwater would also be identified to pay for the investigations and cleanup. In the interim, EPA will evaluate the potential for vapor intrusion at the site.

State officials from DNREC and DPH ODW, along with representatives of the City of Newark, with support from the EPA, held a public information meeting on Nov. 17. The public information meeting offered an opportunity for DNREC, DPH ODW, EPA and City of Newark representatives to discuss with the community, the upcoming investigation work by EPA on groundwater contamination in the area. A brief presentation on the site was given by DNREC’s Site Investigation & Restoration Section, while Newark officials discussed the ongoing, successful treatment of the public water supply at the city’s South Well Field Treatment Plant, which ensures Newark’s drinking water meets all primary and secondary maximum contaminant levels specified by the Safe Drinking Water Act and DPH’s Office of Drinking Water. DNREC's presentation and handouts from the meeting, as well as additional related information, are available below:

For more information regarding previous investigations at the Newark South Groundwater Plume Site and nearby sites , please visit DNREC's Delaware Environmental Navigator (DEN) site at: for the following sites:

  • DE-0342: Newark South Well Field (includes DNREC's Preliminary Assessment and Site Investigation)
  • DE-0173: Syntech
  • DE-0248: AMP
  • DE-1032: Process Indust.
  • DE-0295: Lilly Fasteners
  • DE-0322: Chrome Deposit
  • DE-1551: Pencader Dry Cleaner
  • DE-1343: Treatment Plant
  • DE-1512: Permaflex Rollers

For additional information or questions regarding DNREC's investigations, please contact:

For more information regarding the City of Newark’s drinking water supply and treatment system, please visit: , or contact:

  • Kelly Bachman, Communications Manager, City of Newark, at 302-366-7035 or by email at:
  • Tom Coleman, Director of Public Works and Water Resources, or Mark Neimeister, Water Operations Superintendent, City of Newark, at 302-366-7000, or

For more information regarding the EPA's Superfund Program, please contact: 

  • Gina Soscia, Community Involvement Coordinator, EPA Region 3 at: 215-814-5538, or by email at:
  • Connor O’Loughlin, Site Assessment Manager, EPA Region 3 at: 215-814-3304, or by email at:
  • For media inquiries: Roy Seneca, Office of Communications and Government Relations, U.S. EPA, Region 3 at: 215-814-5567, or by email at:

For more information on the contaminants of concern in the area, primarily tetrachloroethylene (PCE) and to a lesser extent, trichloroethylene (TCE), please visit:

  • Agency for Toxic Substances & Disease Registry (ATSDR) ToxFAQs for PCE and TCE  

site map   |   about this site   |    contact us   |    translate   |