Currently Known Extent of Groundwater Contamination (CKE) for New Jersey

The CKE polygon coverage was developed to provide information regarding the spatial extent of the Currently Known Extent of Groundwater Contamination (CKE) assocaited with domestic potable wells where contaminants were detected in excess of the USEPA drinking water Maximum Contaminant Level (MCL) or NJDEP Ground Water Quality Standards (GWQS). This data in its geographic format is intended to provide information to the public about contaminated ground water areas in the state for evaluation before a well is proposed and permitted and where potable well placement is restricted or should be avoided. If wells must be placed in these areas, the wells should be designed to eliminate the possibility of contamination migration to other areas of the aquifer.