NPDES discharge permits — DE
40 active individual permits with limits in EPA's file of 2026-09-19.
- 120 Hay Road LLC DE0050857
- Allen Harim Foods LLC DE0000299 · major
- Amtrak Wilmington Maintenance Facility DE0050962
- Baltimore Aircoil Company DE0051047
- Calpine Mid-Atlantic DE0000558 · major
- City of Wilmington Regional WWTP DE0020320 · major
- Claymont Properties, LLC DE0051021
- Croda, Inc. DE0000621
- Croda/Fuji Film DE0051080
- DPIF2 DE 1-2 DE0000523
- Delaware City Refining Co. DE0000256 · major
- Delaware City Wastewater Treatment Plant DE0021555
- Delaware River Works (Drawbridge Claymont) DE0000655
- Energy Transfer Marketing & Terminals L.P. DE0050288
- Greenville Country Club DE0021709
- Hanover Foods, Inc. DE0051063
- Harim Millsboro, LLC DE0000736
- Howard Seymour Water Reclamation Plant DE0021512 · major
- INV Performance Materials, LLC DE0000035 · major
- Indian River Power LLC DE0050580 · major
- Kent County Wastewater Treatment Facility DE0020338 · major
- Laurel Sewage Treatment Plant DE0020125
- Liveo Research, Inc DE0051039
- Lums Pond State Park DE0050083
- MOT Wastewater Treatment Plant - NCC DE0050547
- McKee Run Electric Generating Station DE0050466
- Milton Water Reclamation Facility DE0021491
- Mobile Gardens Mobile Home Park DE0050725
- Mountaire Farms Of Delmarva DE0050326
- Occidental Chemical Corporation DE0050911
- Perdue Foods, LLC. DE0000469 · major
- Port Penn Wastewater Treatment Plant DE0021539
- Rehoboth Beach Wastewater Treatment Plant DE0020028 · major
- River View Industrial Park II, LLC and River View Wetlands, LLC DE0000485
- SAW Inc. DE0000141
- SPI Pharma, Inc. DE0000060
- Seaford Wastewater Treatment Plant DE0020265 · major
- Selbyville Wastewater Treatment Facility DE0020010 · major
- South Coastal Regional Wastewater DE0050008 · major
- Winterthur Museum DE0021768
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states