EPA · discharge permits by state

Discharge permits in California

3,312Current permits
112Major dischargers
353Individual 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.

By what is permitted in California

By city

Other states

Every state carrying three or more current permits, in alphabetical order.

Permits

Major dischargers first. Not every permit in California is listed here.

Permit holder	NPDES ID	City	Program	Discharger	Receiving water
ALAMITOS GENERATING STATION	CA0001139	LONG BEACH	Industrial stormwater	Major	San Gabriel River Estuary, Los Cerritos Channel
ALISO CREEK OCEAN OUTFALL	CA0107611	ORANGE COUNTY	Publicly owned treatment works	Major	Pacific Ocean
ARCATA WWTF	CA0022713	ARCATA	Publicly owned treatment works	Major	Humboldt Bay and Arcata Marsh Wildlife Sanctuary
AUBURN WWTP	CA0077712	AUBURN	Publicly owned treatment works	Major	AUBURN RAVINE
BAE SYSTEMS SAN DIEGO SHIP REPAIR INC.	CA0109151	SAN DIEGO	Industrial stormwater	Major
BAKERSFIELD AND KERN COUNTY MS4	CA0083399	BAKERSFIELD	Large municipal storm sewer systems	Major	KERN RIVER
BENICIA WWTP	CA0038091	BENICIA	Publicly owned treatment works	Major	Carquinez Strait
CALEXICO WPCP	CA7000009	CALEXICO	Publicly owned treatment works	Major	New River
CALIFORNIA MEN'S COLONY WWTP	CA0047856	SAN LUIS OBISPO	Publicly owned treatment works	Major	Chorro Creek
CARMEL AREA WWTP	CA0047996	MONTEREY COUNTY	Publicly owned treatment works	Major	PACIFIC OCEAN AT CARMEL BAY
CASTAIC POWER PLANT	CA0055824	CASTAIC		Major	PYRAMID LAKE AND CASTAIC LAKE
CENTRAL CONTRA COSTA SD WWTP	CA0037648	MARTINEZ	Publicly owned treatment works	Major	Suisun Bay
CHICO WPCP	CA0079081	CHICO	Publicly owned treatment works	Major	SACRAMENTO RIVER
CITY OF MORRO BAY WATER RECLAMATION FACILITY	CA3000002	MORRO BAY	Publicly owned treatment works	Major	Pacific Ocean
CITY OF SAN BERNARDINO WRF	CA0105392	SAN BERNARDINO	Publicly owned treatment works	Major	Santa Ana River, Reach 5 & East Twin Creek
CLAUDE 'BUD' LEWIS CARLSBAD DESALINATION PLANT	CA0109223	CARLSBAD		Major	PACIFIC OCEAN
CLOVERDALE WWTP	CA0022977	CLOVERDALE	Publicly owned treatment works	Major	Russian River
COLTON WRF	CA0105236	COLTON	Publicly owned treatment works	Major	SANTA ANA RIVER
CORONA WRF NO. 1	CA8000383	CORONA	Publicly owned treatment works	Major	Santa Ana River, Reach 3
CORONA WRF NO. 3	CA8000395	CORONA	Publicly owned treatment works	Major	SANTA ANA RIVER
CUTLER-OROSI WWTF	CA0081485	CUTLER	Publicly owned treatment works	Major	Sand Creek
DEER CREEK WWTP	CA0078662	EL DORADO COUNTY	Publicly owned treatment works	Major	DEER CREEK
DEVIL'S SLIDE TUNNEL PROJECT	CA0038831	SAN MATEO COUNTY		Major	PACIFIC OCEAN
DRY CREEK WWTP	CA0079502	ROSEVILLE	Publicly owned treatment works	Major	DRY CREEK
EDWARD C. LITTLE WATER RECYCLING FACILITY (LWRF)	CA0063401	CARSON		Major	Pacific Ocean
EL CENTRO WWTP	CA0104426	EL CENTRO	Publicly owned treatment works	Major	Central Drain, Alamo River
EL DORADO HILLS WWTP	CA0078671	PLACERVILLE	Publicly owned treatment works	Major	CARSON CREEK
EL ESTERO WWTF	CA0048143	SANTA BARBARA	Publicly owned treatment works	Major	PACIFIC OCEAN
EL PASO DE ROBLES WWTP	CA0047953	PASO ROBLES	Publicly owned treatment works	Major	Salinas River
EL SEGUNDO REFINERY	CA0000337	EL SEGUNDO		Major	Pacific Ocean
ELLIS CREEK WRF	CA0037810	PETALUMA	Publicly owned treatment works	Major	Petaluma River
ELSINORE VALLEY RWRF	CA8000027	LAKE ELSINORE	Publicly owned treatment works	Major	LAKE ELSINORE
ENCINA OCEAN OUTFALL	CA0107395	CARLSBAD	Publicly owned treatment works	Major	PACIFIC OCEAN
ENCINA POWER STATION	CA0001350	CARLSBAD		Major	PACIFIC OCEAN
FALLBROOK WRP AND SANTA MARGARITA GTP	CA0108031	FALLBROOK	Publicly owned treatment works	Major	Pacific Ocean
FORT BRAGG WWTF	CA0023078	FORT BRAGG	Publicly owned treatment works	Major	Pacific Ocean
FRESNO METROPOLITAN FLOOD CONTROL DISTRICT MS4	CA0083500	FRESNO	Large municipal storm sewer systems	Major	SAN JOAQUIN RIVER
GALT WWTPRF	CA0081434	GALT	Publicly owned treatment works	Major	Skunk Creek
GOLETA SD WRRF	CA0048160	GOLETA	Publicly owned treatment works	Major	PACIFIC OCEAN
GRASS VALLEY CITY WWTP	CAC446876	GRASS VALLEY	Publicly owned treatment works	Major	Rattlesnake Creek-Wolf Creek