EPA · discharge permits by state
Discharge permits in Delaware
- 92Current permits
- 3Major dischargers
- 52Individual permits
A major discharger is one EPA rates as significant on volume, toxicity or the water it reaches; the rest are minors. An individual permit is written for one operation, while general permit coverage applies a statewide permit to a site that qualifies for it.
This page gathers Delaware’s current permits three ways below — by the program they are issued under, by the city of the discharge, and by watershed. It names 4 programs, 8 cities and 11 watersheds. Each list says which set it covers.
Every permit’s record
Each of the 92 current permits in Delaware has a record page: the permittee, the receiving water, the status and dates, and its effluent limits and exceedances. Each city below lists its own; or every permit in Delaware, A to Z.
By what is permitted in Delaware
By city
The 8 cities with the most permits. All 8 cities in Delaware with 3 or more permits are listed at every city in Delaware.
Watersheds inside Delaware 11
Every watershed with three or more permits in Delaware, most permits first.
All 11 watersheds in Delaware with 3 or more permits are named on one page at every watershed in Delaware.
Other states
Every state carrying three or more current permits, in alphabetical order.
- Alaska 3,110
- Alabama 13,475
- Arkansas 5,333
- American Samoa 7
- Arizona 7,318
- California 3,312
- Colorado 8,712
- Connecticut 1,045
- District of Columbia 309
- Florida 23,564
- Georgia 45,725
- Guam 232
- Hawaii 2,939
- Iowa 1,610
- Idaho 4,607
- Illinois 10,926
- Indiana 13,164
- Kansas 5,445
- Kentucky 5,741
- Louisiana 4,455
Permits
Major dischargers first. Not every permit in Delaware is listed here.
| Permit holder | NPDES ID | City | Program | Discharger | Receiving water |
|---|---|---|---|---|---|
| CALPINE MID-ATLANTIC | DE0000558 | WILMINGTON | Major | Matson Run-Shellpot Creek | |
| DELAWARE CITY REFINING CO. | DE0000256 | DELAWARE CITY | Major | Red Lion Creek-Delaware River | |
| SEAFORD WASTEWATER TREATMENT PLANT | DE0020265 | SEAFORD | Publicly owned treatment works | Major | NANTICOKE RIVER |
| ALLAN MYERS DE, INC. | DEI000243 | WILMINGTON | Industrial stormwater | Minor | Brandywine Creek |
| ALSCO INC. | DEPIU000I | NEW CASTLE | Minor | ||
| ASHLAND LLC HERCULES RESEARCH CENTER | DEPIU000H | WILMINGTON | Minor | ||
| ASTRA ZENECA PHARMACEUTICALS LP. | DEPIU000K | NEWARK | Minor | ||
| BALTIMORE AIRCOIL COMPANY | DE0051047 | MILFORD | Minor | Upper Mispillion River | |
| BRAINERD, LLC | DEPIU000D | SEAFORD | Minor | ||
| BRIDGEVILLE STP | DEL020249 | BRIDGEVILLE | Minor | Headwaters Nanticoke River | |
| CHEMOURS HOLLY RUN | DEPIU001M | NEWPORT | Minor | ||
| CHRISTIANA HOSPITAL | DEPIU000N | NEWARK | Minor | ||
| CITY OF SEAFORD WWTF | DEL020265 | SEAFORD | Minor | Butler Mill Branch-Nanticoke River | |
| CONSTRUCT IN-TRANSIT MUNITIONS FACILITY, B1202 | 03R10I00U | DOVER | Construction stormwater | Minor | Little River-Delaware Bay |
| CRODA | DEPIU000O | NEW CASTLE | Minor | ||
| DELAWARE CITY STP | DEL021555 | NEWARK | Minor | C&D Canal East-Delaware River | |
| DELAWARE CITY WASTEWATER TREATMENT PLANT | DE0021555 | NEW CASTLE | Publicly owned treatment works | Minor | C&D Canal East-Delaware River |
| DELAWARE RIVER & BAY AUTHORITY | NJG155101 | OUT OF STATE | Minor | ||
| DELAWARE SAND AND GRAVEL | DEPIU000R | NEW CASTLE | Minor | ||
| DELDOT IN KENT COUNTY | DER040023 | DOVER | Minor | Upper Saint Jones River | |
| DIAMOND MATERIALS | DEPIU000S | WILMINGTON | Minor | ||
| DOVER | DER040021 | DOVER | Minor | ||
| DOVER AFB - BUILDING 270 | DER10F00C | DOVER AFB | Construction stormwater | Minor | |
| DOVER WIPES CO. | DEPIU0004 | DOVER | Minor | ||
| DPIF2 DE 1-2 | DE0000523 | WILMINGTON | Minor | Little Mill Creek | |
| DRPI | DEPIU000P | NEW CASTLE | Minor | ||
| DSWA CENTRAL SOLID WASTE MANAGEMENT CENTER | DEPIU0002 | FELTON | Minor | ||
| DUPONT ELECTRONIC MATERIALS CMP, LLC-BUILDING 8 | DEPIU001E | NEWARK | Minor | ||
| DUPONT PERFORMANCE POLYMERS | DEPIU001N | NEWARK | Minor | ||
| DUPONT SPECIALTY PRODUCTS USA, LLC. | DEPIU000W | NEWARK | Minor | ||
| DUPONT SPECIALTY PRODUCTS-EXPERIMENTAL STATION | DEPIU000T | WILMINGTON | Minor | ||
| ENERGY CENTER DOVER, LLC | DEPIU0003 | DOVER | Minor | ||
| FOODLINER | DEPIU000Z | NEWARK | Minor | ||
| FUJI | DEPIU0010 | NEW CASTLE | Minor | ||
| FUNNY FARM | DEA170084 | FELTON | Concentrated animal feeding operations | Minor | |
| GARRISON ENERGY CENTER LLC | DEPIU0008 | DOVER | Minor | ||
| GE AVIATION | DEPIU000Y | NEWARK | Minor | ||
| HANOVER FOODS, INC. | DE0051063 | CLAYTON | Minor | Duck Creek | |
| HERITAGE CONCRETE | DEI000361 | WILMINGTON | Industrial stormwater | Minor | Christina River |
| HOWARD SEYMOUR WATER RECLAMATION PLANT | DEL021512 | LEWES | Minor | Canary Creek-Broadkill River |