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Delaware Department of Natural Resources and Environmental Control (DNREC) Division of Water Resources (DWR) Water Supply Section
DNREC DWR Ground Water Discharges Section (GWDS)
U.S. Environmental Protection Agency (EPA) Region 3
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Delaware is fully authorized to administer the National Pollutant Discharge Elimination System (NPDES) permit program and to issue individual and general permits. Delaware rules are more stringent because a NPDES permit is required to discharge any pollutant from a point source to both surface waters and groundwater. See the state section NPDES for further information.
Delaware also protects groundwater resources through the state's underground storage tank (UST) regulations. The Delaware Department of Natural Resources and Environmental Control (DNREC) reserves the right to require secondary containment or equivalent protection for UST system installations where aquifers underlying the UST facility need such protection, where groundwater below the UST facility is within a wellhead protection area, or where groundwater is susceptible to contamination in order to protect the safety, health, welfare, and/or environment of the state. See the state section UNDERGROUND STORAGE TANKS for more information.