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Discharge permits in Delaware
40 active individual NPDES permits with limits in EPA's file of Oct 22, 2026.
By industry
Sewage treatment plants (13)
Industrial and other (27)
- 120 Hay Road LLC DE0050857 · Asphalt Felts And Coatings
- Allen Harim Foods LLC DE0000299 · major · Poultry Slaughtering And Processing
- Amtrak Wilmington Maintenance Facility DE0050962
- Baltimore Aircoil Company DE0051047 · Refrigeration And Heating Equipment
- Calpine Mid-Atlantic DE0000558 · major · Electric Services
- Claymont Properties, LLC DE0051021 · Blast Furnaces And Steel Mills
- Croda, Inc. DE0000621 · Industrial Organic Chemicals
- Dpif2 De 1-2 DE0000523 · Motor Vehicles And Car Bodies
- Delaware City Refining Co. DE0000256 · major · Petroleum Refining
- Delaware River Works (Drawbridge Claymont) DE0000655 · Industrial Inorganic Chemicals
- Energy Transfer Marketing & Terminals L.P. DE0050288 · Natural Gas Liquids
- Greenville Country Club DE0021709 · Physical Fitness Facilities
- Hanover Foods, Inc. DE0051063
- Harim Millsboro, LLC DE0000736 · Pickles, Sauces, And Salad Dressings
- INV Performance Materials, LLC DE0000035 · major · Plastics Materials And Resins
- Indian River Power LLC DE0050580 · major · Electric Services
- Liveo Research, Inc DE0051039 · Unsupported Plastics Film & Sheet
- Lums Pond State Park DE0050083 · Museums And Art Galleries
- McKee Run Electric Generating Station DE0050466 · Electric Services
- Mobile Gardens Mobile Home Park DE0050725 · Mobile Home Site Operators
- Mountaire Farms Of Delmarva DE0050326 · Poultry And Poultry Products
- Occidental Chemical Corporation DE0050911 · Alkalies And Chlorine
- Perdue Foods, LLC. DE0000469 · major · Poultry Slaughtering And Processing
- River View Industrial Park II, LLC and River View Wetlands, LLC DE0000485 · Unsupported Plastics Film & Sheet
- SAW Inc. DE0000141 · Canned Fruits And Vegetables
- SPI Pharma, Inc. DE0000060 · Industrial Inorganic Chemicals
- Winterthur Museum DE0021768 · Museums And Art Galleries
Source: EPA ECHO, Oct 22, 2026. As JSON: /api/v1/permits?state=DE · MCP: https://passage-data.com/mcp · All states