NPDES discharge permits — CA
363 active individual permits with limits in EPA's file of 2026-09-19.
- AES Alamitos LLC CA0001139 · major
- AES Huntington Beach, LLC CA0001163 · major
- AES Redondo Beach LLC CA0001201 · major
- Aerojet Rocketdyne, Inc. CA0083861
- Air Products Manufacturing LLC CA0056065
- Alturas, City of CA0078921
- Amedee Geothermal Venture 1 CA0103055
- American Canyon, City of CA0038768 · major
- Anderson, City of CA0077704 · major
- Angels, City of CA0085201
- Arcata, City of CA0022713 · major
- Avalon, City of CA0054372 · major
- Avila Beach CSD and Port San Luis Harbor District CA0047830
- Bear Valley Water District CA0085146
- Beaumont, City of CA0105376 · major
- Bell-Carter Olive Company, Inc. and City of Corning CA0083721
- Benicia, City of CA0038091 · major
- Boeing Company, The CA0001309 · major
- Brawley, City of CA0104523 · major
- Brentwood, City of CA0082660 · major
- Browning-Ferris Industries CA0029947
- Buena Vista Rancheria of Me-Wuk Indians CA0049675
- Burbank, City of CA0055531 · major
- Burlingame, City of, and North Bayside System Unit CA0037788 · major
- Burney Forest Products; Shasta Green, Inc.; and Fruit Growers Supply Company CA0082490
- C&H Sugar Company Inc., and Crockett Community Services District CA0005240 · major
- CA Dept of Fish & Game; US Army Corps of Engineers CA0030201
- CALIFORNIA DEPARTMENT OF PARKS AND RECREATION CA0103179
- COLLINS PINE COMPANY CA0004391
- COLUSA, CITY OF CA0078999
- Calaveras County Water District CA0085278
- Calaveras County Water District and Saddle Creek Golf Club, LLC CA0084620
- Calexico, City of CA7000009 · major
- California Department of Corrections and Rehabilitation CA0047856 · major
- California Department of Corrections and Rehabilitation CA7000001
- California Department of Fish and Game CA0102776
- California Department of Fish and Game CA0102814
- California Department of Fish and Wildlife CA0102792
- California Department of Fish and Wildlife and PacifiCorp CA1000004
- California Department of Parks and Recreation CA0048267
- California Department of Water Resources CA0059188 · major
- California Dept. of Fish and Wildlife; Los Angeles Dept. of Water and Power CA0102806
- California Redwood Co & Trinity River Timber Co CA0005932
- California Steel Industries, Inc. CA0105449
- Calipatria, City of CA0105015 · major
- Calistoga, City of CA0037966
- Calleguas Municipal Water District CA0064521 · major
- Camarillo Sanitary District CA0053597 · major
- Carmel Area Wastewater District CA0047996 · major
- Carpinteria Sanitary District CA0047364 · major
- Cayucos Sanitary District CA3000001
- Cedar Fair Entertainment Company CA0030180
- Central Contra Costa Sanitary District CA0037648 · major
- Central Marin Sanitation Agency CA0038628 · major
- Chester Public Utility District CA0077747
- Chevron Environmental Management Company CA0001465
- Chevron Products Company CA0000337 · major
- Chevron Products Company CA0005134 · major
- Chico, City of CA0079081 · major
- City of Lathrop CA0085359 · major
- City of Livermore, Livermore-Amador Valley WMA, East Bay Dischargers Authority CA0038008 · major
- City of Morro Bay CA3000002 · major
- City of Oxnard Municipal Corporation CA0054097 · major
- City of Rio Dell CA0022748
- City of San Leandro Water Pollution Control Plant - Treatment Wetland CA0038881
- Cloverdale, City of CA0022977 · major
- Clovis, City of CA0085235 · major
- Coachella Sanitary District CA0104493 · major
- Coachella Valley Water District CA0104973 · major
- Colton, City of CA0105236 · major
- Colton/San Bernardino Regional Tertiary Treatment & Water Reclamation Authority CA8000304 · major
- Corning, City of CA0004995 · major
- Corona, City of, Department of Water & Power CA8000383 · major
- Corona, City of, Department of Water and Power CA8000395 · major
- Country Life MHPRV Asset Partners, L.P.; Hector Munoz, d/b/a Munoz Wastewater Mo CA0104264
- Covelo Community Services District CA0023574
- Covina Irrigating Company CA0060577
- Crescent City, City of CA0022756 · major
- Crockett Cogeneration LLP CA0029904
- Crockett Community Services District CA0037885
- Cutler-Orosi Joint Powers Wastewater Authority CA0081485 · major
- DG Fairhaven Power, LLC CA0024571
- DRY CREEK BAND OF POMO INDIANS CA0005241
- DYNEGY MOSS LANDING LLC CA0006254 · major
- Date Gardens Asset Partners L.P. and Hector Munoz, Munoz Wastewater Mon Serv CA0104841
- Davis, City of CA0079049 · major
- Delta Diablo CA0038547 · major
- Discovery Bay, Town of, Community Services District CA0078590 · major
- Disneyland Resort CA0106283
- Donald T. Sterling Corporation CA0053091
- Donner Summit Public Utility District CA0081621
- Dos Cuadras Offshore Resources, LLC CA0105996
- Dos Cuadras Offshore Resources, LLC CA0106828
- Dublin San Ramon SD, Livermore-Amador Valley WMA, East Bay Dischargers Authority CA0037613 · major
- Dunsmuir, City of CA0078441
- East Bay Dischargers Authority; Livermore-Amador Valley WMA CA0037869 · major
- East Bay Municipal Utility District CA0037702 · major
- East Bay Municipal Utility District CA0038342
- Eastern Municipal Water District CA8000188 · major
- Eco Services Operations Corp CA0006165 · major
- El Centro, City of CA0104426 · major
- El Paso de Robles, City of CA0047953 · major
- Elsinore Valley Municipal Water District CA8000027 · major
- Encina Wastewater Authority CA0107395 · major
- Equilon Enterprises LLC dba Shell Oil Products US CA0000809 · major
- Equilon Enterprises LLC dba Shell Oil Products US CA0064637
- Escondido, City of CA0107981 · major
- Eureka, City of CA0024449 · major
- Exploratorium, The CA0030198
- Fairfield-Suisun Sewer District CA0038024 · major
- Fallbrook Public Utility District CA0108031 · major
- Ferndale, City of CA0022721
- Forestville Water District CA0023043
- Fort Bragg Municipal Improvement District No. 1 CA0023078
- Fortuna, City of CA0022730 · major
- Foster Dairy Farms dba Humboldt Creamery CA0005584
- French Gulch (Nevada) Mining Corporation, and USDI-Bureau of Land Management CA0085294
- GOLETA SANITARY DISTRICT CA0048160 · major
- Genentech, Inc. CA0109193
- Granite Rock Company CA0005274
- Graton Community Services District CA0023639
- Grizzly Lake Community Services District CA0081744
- Healdsburg, City of CA0025135 · major
- Heber Public Utility District CA0104370 · major
- Heritage Ranch CSD CA0048941
- Holtville, City of CA0104361
- Humboldt County Resort Improvement District No. 1 CA0023027
- Humboldt State University CA0025151
- Imperial Irrigation District CA0104248
- Imperial Irrigation District CA7000004
- Imperial, City of CA0104400 · major
- Inland Empire Utilities Agency CA8000409 · major
- Ironhouse Sanitary District CA0085260 · major
- Irvine Ranch Water District CA8000326 · major
- Jamul Indian Village CA0084284
- Joint Outfall System CA0053619 · major
- Joint Outfall System CA0053716 · major
- Joint Outfall System CA0053911 · major
- Joint Outfall System CA0054011 · major
- Joint Outfall System CA0054119 · major
- Joint Outfall System CA0064661
- Joint Outfall System (JOS) CA0053813 · major
- KENT SEATECH, LLC CA0105181
- Kinder Morgan Liquids Terminals, LLC CA0056863
- Knott's Berry Farm CA0106496
- LOS ANGELES TURF CLUB CA0064203
- LOS ANGELES, CITY OF CA0000353 · major
- LOS ANGELES, CITY OF CA0000361 · major
- Las Gallinas Valley Sanitary District CA0037851 · major
- Las Virgenes Municipal Water District CA0056014 · major
- Lee Lake Water District CA8000100 · major
- Lehigh Southwest Cement Company and Hanson Permanente Cement, Inc. CA0030210 · major
- Lincoln Center Environmental Remediation Trust CA0084255
- Lincoln, City of CA0084476 · major
- Linda County Water District CA0079651 · major
- Liquid Stone Holdings, LLC CA0109258
- Livermore-Amador Valley Water Management Agency CA0038679
- Loleta Community Services District CA0023671
- Lompoc, City of CA0048127 · major
- Long Beach Generation LLC CA0001171
- Los Alamitos Race Course CA0106348
- Los Angeles County Department of Beaches and Harbors CA0064670
- Los Angeles County Department of Public Works CA0059099
- Los Angeles Department of Water and Power CA0000370 · major
- Los Angeles Department of Water and Power CA0057037
- Los Angeles Department of Water and Power CA0057649
- Los Angeles, City of CA0053856 · major
- Los Angeles, City of CA0053953 · major
- Los Angeles, City of CA0056227 · major
- Los Angeles, City of CA0109991 · major
- Los Angeles, City of, Department of Water and Power CA0055824 · major
- Los Angeles, Port of CA0064157 · major
- Lubricating Specialties Company CA0059013
- Lytton Rancheria of California CA0000437
- MINING REMEDIAL RECOVERY CO CA0081876 · major
- Magic Mountain, LLC CA0003352 · major
- Manteca, City of CA0081558 · major
- Marine Corps Base, Camp Pendleton CA0109347 · major
- Martinez Refining Company LLC CA0005789 · major
- McKinleyville Community Services District CA0024490 · major
- Mendocino City Community Services District CA0022870
- Mendocino County Water Works District No. 2 CA0024040
- Merced, City of CA0079219 · major
- Meridian Beartrack Company CA0085243 · major
- Metropolitan Stevedore Company CA0057746
- Millbrae, City of, and North Bayside System Unit (NBSU) CA0037532 · major
- Montecito Sanitary District CA0047899 · major
- Monterey One Water CA0048551 · major
- Morton Salt, Incorporated CA0061476
- Mountain House Community Services District CA0084271 · major
- Mt. Shasta, City of CA0078051
- Mt. View Sanitary District CA0037770 · major
- Napa Sanitation District CA0037575 · major
- Naval Engineering and Expeditionary Warfare Center CA0064564
- Nevada City, City of CA0079901
- Newhall Ranch Sanitation District CA0064556 · major
- Niland County Sanitary District CA0104451
- North San Mateo County Sanitation District CA0037737 · major
- Novato Sanitary District CA0037958 · major
- Ocean Farms, Inc. CA0024481
- Oceanside, City of CA0107433 · major
- Ojai Valley Sanitary District CA0053961 · major
- Olivehurst Public Utility District CA0077836 · major
- Orange County Sanitation District CA0110604 · major
- Orange County Water District CA8000408
- Original Sixteen to One Mine, Inc. CA0081809
- Ormond Beach Power, LLC CA0001198 · major
- Oro Loma Sanitary District; Castro Valley Sanitary District CA0037559
- Oroville Region, Sewerage Commission CA0079235 · major
- Owens-Brockway Glass Container Inc. CA0056464
- PACIFIC GAS and ELECTRIC COMPANY CA0003751 · major
- PICAYUNE RNCH-CHUKCHANSI INDNS CA0004009
- PORTOLA, CITY OF CA0077844
- Pacifica, City of CA0038776 · major
- Padre Dam Municipal Water District CA0107492 · major
- Palo Alto, City of CA0037834 · major
- Paradise Irrigation District CA0083488
- Peninsula Community Services District and Samoa Pacific Group CA1000001
- Petaluma, City of CA0037810 · major
- Petro-Diamond Terminal Company CA0059358
- Phillips 66 CA0005053 · major
- Phillips 66 CA0063185 · major
- Phillips 66 Company CA0064611 · major
- Pincay RE, LLC CA0064688 · major
- Pinole, City of CA0037796 · major
- Pismo Beach, City of CA0048151 · major
- Plains West Coast Terminals, LLC CA0052949
- Poseidon Resources (Channelside) LLC CA0109223 · major
- Quincy Community Services District CA0078981 · major
- Ramey Family Trust CA0049417
- Red Bluff, City of CA0078891 · major
- Redding, City of CA0079731 · major
- Redding, City of CA0082589 · major
- Redondo Beach, City of CA0064297
- Redway Community Services District CA0022781
- Regents, University of California CA0077895 · major
- Reynolds Consumer Products LLC CA0004821 · major
- Rialto, City of CA0105295 · major
- Rio Vista, City of CA0079588
- Rio Vista, City of CA0083771 · major
- River Highlands CSD, County of Yuba, and Gold Village Land Development LLC CA0081574
- Riverside, City of; Department of Public Works CA0105350 · major
- Rodeo Sanitary District CA0037826 · major
- Russian River County Sanitation District CA0024058
- SAN FRANCISCO, CITY & COUNTY CA0037681 · major
- SAN JUAN BAUTISTA, CITY OF CA0047902
- SANTA CLARA COUNTY OF CA0038784
- SANTA YNEZ BAND OF CHUMASH IND CA0050008
- SENTINEL PEAK RESOURCES CALIFORNIA LLC CA0050628
- SOUTH SAN LUIS OBISPO CO SD CA0048003 · major
- SUSANVILLE SANITARY DISTRICT CA0102695 · major
- Sacramento Regional County Sanitation District CA0077682 · major
- Sacramento, City of CA0079111 · major
- San Andreas Sanitary District CA0079464
- San Bernardino, City of, Municipal Water Department CA0105392 · major
- San Bernardino, City of, Municipal Water Department CA8000015
- San Diego Gas and Electric CA0109215 · major
- San Diego, City of CA0107409 · major
- San Diego, City of CA0109045 · major
- San Elijo Joint Powers Authority CA0107999 · major
- San Francisco, City and County of CA0037664 · major
- San Francisco, City and County of; North Bayside System Unit CA0038318 · major
- San Jose and Santa Clara, Cities of; and San Jose/Santa Clara WPCP CA0037842 · major
- San Luis Obispo, City of CA0049224 · major
- San Mateo, City of CA0037541 · major
- San Simeon Community Services District CA0047961
- Sanitary District No. 5 of Marin County CA0037427
- Sanitary District No. 5 of Marin County CA0037753
- Santa Barbara, City of CA0048143 · major
- Santa Clarita Valley Sanitation District CA0054216 · major
- Santa Clarita Valley Sanitation District of Los Angeles County CA0054313 · major
- Santa Cruz, City of CA0048194 · major
- Santa Rosa, City of CA0022764 · major
- Sausalito-Marin City Sanitary District CA0038067 · major
- Schnitzer Steel Industries, Inc. CA0030228
- Scotia, Town of, Company LLC CA0006017
- Scotts Valley, City of CA0048828 · major
- Sea World Parks & Entertainment, Inc. CA0107336 · major
- Seeley County Water District CA0105023
- Sentinel Peak Resources California, LLC CA0057827 · major
- Sewer Authority Mid-Coastside CA0038598 · major
- Sewerage Agency of Southern Marin CA0037711 · major
- Shasta County Service Area No. 17 CA0081507
- Shasta Lake, City of CA0079511 · major
- Shasta-Sustainable Resource Management, Inc. CA0081957
- Sierra Pacific Industries CA0003981
- Sierra Pacific Industries CA0080357
- Sierra Pacific Industries CA0081400
- Silicon Valley Clean Water CA0038369 · major
- Simi Valley, City of CA0055221 · major
- Sonoma Valley County Sanitation District CA0037800 · major
- South County Regional Wastewater Authority CA0049964 · major
- South Orange County Wastewater Authority CA0107417 · major
- South Orange County Wastewater Authority CA0107611 · major
- South San Francisco and San Bruno, Cities of & North Bayside System Unit (NBSU) CA0038130 · major
- Southern California Edison Company CA0061191
- Southern California Edison Company CA0109282 · major
- St. Helena, City of CA0038016
- State of California Department of Parks and Recreation CA0085332
- Sterling Caviar, LLC CA0085197
- Stevens Creek Quarry, Inc. CA0030236
- Stockton, City of CA0079138 · major
- Summerland Sanitary District CA0048054
- Sunnyvale, City of CA0037621 · major
- Sweetwater Authority CA0108952
- TABLE MOUNTAIN RANCHERIA CA0084280
- TFX Aviation, Inc. CA0064599
- Tehama County Sanitation District No. 1 CA0084069
- Tesoro Logistics Operations LLC CA0059561
- Tesoro Logistics Operations, LLC CA0000442
- Tesoro Logistics Operations, LLC CA0058343
- Tesoro Logistics Operations, LLC CA0060232
- Tesoro Refining & Marketing Company LLC CA0000680 · major
- Tesoro Refining & Marketing Company LLC CA0002020
- Tesoro Refining and Marketing Company CA0003778 · major
- Tesoro Refining and Marketing LLC CA0004961 · major
- The CHY Company and Olive Springs Quarry, Inc. CA0047791
- Thousand Oaks, City of CA0056294 · major
- Torrance Refinery Company, LLC CA0055387 · major
- Tracy, City of CA0079154 · major
- Turlock, City of CA0078948 · major
- Turlock, City of CA0085316 · major
- U.S. Department of Navy CA0110116 · major
- U.S. Department of the Interior, Bureau of Reclamation CA0084905
- U.S. Department of the Interior, National Park Service, Yosemite National Park CA0081759 · major
- U.S. Navy and KJS Support Services JV, LLC CA0104906
- US NAVY NAVAL AIR WEAPONS STAT CA0061794
- USS-POSCO Indiustries CA0005002 · major
- Ukiah, City of CA0022888 · major
- Ultramar, Inc., A Valero Company CA0057568
- Ultramar, Incorporated CA0055719
- Union Sanitary District CA0038733
- United States Department of the Navy CA0109169 · major
- United States Department of the Navy CA0109185 · major
- United States Department of the Navy CA0109363 · major
- United States Navy CA0110175
- United States Section of International Boundary and Water Commission (USIBWC) CA0108928 · major
- University of California - Davis CA0024333
- University of California, San Diego CA0107239
- University of Sourthern California CA0056651
- Vacaville, City of CA0077691 · major
- Valero Refining Company - California CA0005550 · major
- Vallejo Flood and Wastewater District CA0037699 · major
- Valley Sanitary District CA0104477 · major
- Ventura, City of CA0053651 · major
- Ventura, City of CA0064726
- Vessel Testing a Pilot OceanWell CA0000018
- Victor Valley Wastewater Reclamation Authority CA0102822 · major
- Vopak Terminal Long Beach Inc. CA0064165
- Vopak Terminal Los Angeles, Inc. CA0063177
- Water Replenishment District of Southern California CA0064645 · major
- Watsonville, City of CA0048216 · major
- West Basin Municipal Water District CA0063401 · major
- West Basin Municipal Water District CA0064246 · major
- West County Agency; West County Wastewater District CA0038539 · major
- Western Riverside County Regional Wastewater Authority (WRCRWA) CA8000316 · major
- Westmorland, City of CA0105007
- Willits, City of CA0023060 · major
- Windsor Water District CA0023345 · major
- Woodland, City of CA0077950 · major
- Yountville, Town of CA0038121
- Yuba City, City of CA0079260 · major
- Yucaipa Valley Water District CA0105619 · major
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