NPDES discharge permits — WA
425 active individual permits with limits in EPA's file of 2026-09-19.
- AMERICAN WATER MILITARY SERVICES - JBLM WA0021954 · major
- AMG Aluminum North American LLC WA0002976
- ARLINGTON CITY WA0022560 · major
- Alcoa Wenatchee LLC WA0000680 · major
- Alderbrook Resort & Spa/North Forty Lodging LLC WA0037753
- Alderwood Water & Wastewater District WA0020826 · major
- Alleima Special Metals WA0003701
- Allweather Wood LLC WA0040029
- Alon Asphalt Company WA0003239
- Alon Asphalt Company WA0031704
- Ash Grove Cement Company WA0032221
- Asotin County PUD WA0021113
- Avista Corp - Kettle Falls WA0045217
- B&L Woodwaste Site Custodial Trust WA0040321
- BLAINE CITY OF WA0022641 · major
- BNSF Railway Company WA0032123
- BONNEVILLE PROJECT - USACE WA0026778
- BP CHERRY POINT REFINERY WA0022900 · major
- BURLINGTON CITY WA0020150 · major
- Bell Lumber & Pole Washington LLC WA0030813
- Benton City, City of WA0051349
- Bio Pappel International Inc WA0002925 · major
- Birch Bay Water & Sewer District WA0029556 · major
- Blau Oyster Co. Inc. WA0029262
- Boeing EHS Group WA0991001
- Boise Cascade Wood Products, Llc. - Arden Lumber WA0045527
- Bradken Inc WA0022918
- CHERRYWOOD MOBILE HOME PARK WA0037079
- CITY OF CHENEY WA0020842 · major
- CITY OF SEATTLE PUBLIC UTILITIES WA0031682
- COLUMBIA GORGE ALUMINUM COMPANY WA0000540
- COULEE DAM, TOWN OF WA0020281
- Carlyon Beach Homeowners Association WA0037915
- Cascadia Holding Bainbridge LLC WA0023469
- CenTrio Energy Seattle LLC WA0001503
- Chelan Co PUD #1 Lake Wenatchee WA0052094
- Chelan County PUD No. 1 WA0052175
- Chemtrade Sulex Inc WA0031283
- Chevron Environmental Management Co WA0991007
- City Of Colfax WA0020613
- City of Aberdeen WA0037192 · major
- City of Anacortes WA0020257 · major
- City of Asotin WA0020818
- City of Bainbridge Island WA0020907 · major
- City of Bellingham Public Works WA0023744 · major
- City of Bingen WA0022373
- City of Bremerton WA0029289 · major
- City of Brewster WA0021008
- City of Bridgeport WA0024066
- City of Buckley WA0023361
- City of Camas WA0020249
- City of Carbonado WA0020834
- City of Cashmere WA0023183
- City of Castle Rock WA0022683
- City of Centralia WA0020982 · major
- City of Chehalis WA0021105 · major
- City of Chelan POTW WA0020605
- City of Chewelah WA0023604
- City of Cle Elum WA0021938
- City of Colville WA0022616
- City of Davenport WA0045578
- City of Dayton WA0020729
- City of Duvall WA0029513 · major
- City of Edmonds WA0024058 · major
- City of Ellensburg WA0024341 · major
- City of Elma WA0023132
- City of Entiat WA0051276
- City of Enumclaw WA0020575 · major
- City of Ferndale WA0022454 · major
- City of Goldendale WA0021121
- City of Grand Coulee WA0044857
- City of Grandview WA0052205 · major
- City of Granger WA0022691
- City of Granite Falls WA0021130
- City of Hoquiam WA0020915 · major
- City of Ilwaco WA0023159
- City of Kalama WA0020320
- City of Kennewick POTW WA0044784 · major
- City of Kittitas WA0021253
- City of La Center WA0023230
- City of Langley WA0020702
- City of Leavenworth WA0020974
- City of Long Beach WA0022489
- City of Lynnwood WA0024031 · major
- City of Mabton WA0020648
- City of Marysville WA0022497 · major
- City of McCleary WA0024040
- City of Montesano WA0024660
- City of Morton WA0022659
- City of Mossyrock WA0021024
- City of Mount Vernon Public Works WA0024074 · major
- City of Newport WA0022322
- City of North Bend WA0029351 · major
- City of North Bonneville WA0023388
- City of Oak Harbor WA0020567 · major
- City of Ocean Shores WA0023817
- City of Okanogan WA0022365
- City of Omak WA0020940
- City of Oroville WA0022390
- City of Orting WA0020303
- City of Othello WA0022357
- City of Palouse WA0044806
- City of Pasco WA0044962 · major
- City of Pateros WA0020559
- City of Pomeroy WA0021164
- City of Port Angeles WA0023973 · major
- City of Port Townsend WA0037052
- City of Prosser WA0020800 · major
- City of Pullman WA0044652 · major
- City of Quincy WA0021067 · major
- City of Raymond WA0041041
- City of Richland WA0020419 · major
- City of Rock Island WA0501487
- City of Sedro-Woolley WA0023752 · major
- City of Selah WA0021032
- City of Sequim WA0022349
- City of Shelton WA0023345 · major
- City of Snohomish WA0029548 · major
- City of Spokane WA0024473 · major
- City of Stevenson WA0020672
- City of Sultan WA0023302
- City of Sumner WA0023353 · major
- City of Sunnyside WA0020991 · major
- City of Tacoma WA0037087 · major
- City of Tacoma WA0037214 · major
- City of Tekoa WA0023141
- City of Tieton WA0052396
- City of Toledo WA0036986
- City of Tonasket WA0052337
- City of Vader WA0021083
- City of Vancouver WA0024350 · major
- City of Washougal WA0037427
- City of Wenatchee WA0023949 · major
- City of West Richland WA0051063
- City of Westport WA0020923
- City of Winlock WA0021199
- City of Woodland WA0020401
- City of Yelm WA0040762
- City of Zillah WA0020168
- Clallam County Public Works WA0024449
- Clallam County Public Works Department WA0024431
- Clark Public Utilities WA0040932
- Clark Regional Wastewater District WA0023272
- College Place Stp WA0020656
- Columbia River Carbonates WA0039721
- Community of Vantage WA0050474
- Concrete Technology Corp WA0001864
- Cosmo Specialty Fibers Inc. WA0000809 · major
- Cowlitz County Public Works WA0023795
- Cowlitz County Public Works WA0037770
- Cowlitz County Public Works--Ryderwood WA0038695
- Cowlitz Tribal Member Services WA0040258
- Custom Seafood Services, Inc. WA0002291
- DAWN MINING COMPANY WA0025721 · major
- DAWN MINING COMPANY LLC WA0026841
- DEFENSE, NAVY WA0002062 · major
- DEFENSE, NAVY WA0021997
- DEFENSE, NAVY WA0025577
- DEFENSE, NAVY WA0026573
- Dakota Creek Industries Inc WA0031411
- Darigold WA0052078
- Darigold, Inc WA0002470
- Darigold, Inc. WA0037478
- Department of Corrections WA0037737
- Department of Corrections WA0039845
- Department of Social and Health Services WA0023728
- Dickey Farms Inc WA0050407
- Divert Integrated Food Recovery Facility WA0991060
- Douglas Co Sewer District #1 WA0020621
- Dulcich Inc. dba Pacific Seafood Group WA0041114
- EASTSOUND SEWER & WATER DISTRICT WA0030571
- EASTSOUND SEWER & WATER DISTRICT WA0030911
- EVERSON CITY WA0020435
- Echo Bay Minerals Company WA0991005
- Energy Northwest WA0025151
- Everett Ship Repair LLC WA0991034
- Evergreen Fuel & Lubes, LLC WA0038784
- FISHERMAN BAY SEWER DISTRICT WA0030589
- FRIDAY HARBOR TOWN WA0023582
- Freeman School District 358 WA0045403
- GIG HARBOR CITY WA0023957 · major
- GRAYMONT WESTERN US INC WA0001007
- Georgia-Pacific LLC WA0000256 · major
- Georgia-Pacific LLC WA0031984
- Grant County Public Utility District WA0991028
- Grant PUD WA0991013
- Grant PUD @ Wanapum/Priest WA0991029
- Grays Harbor County WA0037095
- Guemes Channel Holdings, LLC WA0501491
- HANSEN BOAT COMPANY WA0031909
- HARRAH, TOWN OF WA0022705
- HF Sinclair Puget Sound Refining LLC WA0002941 · major
- Hartstene Pointe Water-Sewer District WA0038377
- Hughes Farms Inc. WA0991008
- ICE HARBOR LOCK AND DAM - USACE WA0026816
- INTALCO ALUMINUM CORPORATION WA0002950 · major
- INTERIOR, FISH & WILDLIFE WA0001902
- INTERIOR, RECLAMATION WA0024163
- Ice Floe LLC dba Nichols Brothers Boat Builders WA0032166
- Inland Empire Paper Company WA0000825 · major
- JOHN DAY PROJECT - USACE WA0026832
- JT Marine WA0039438
- Jacobs WA0024627 · major
- KITSAP COUNTY DEPARTMENT OF PUBLIC WORKS WA0023256
- Kaiser Aluminum Washington WA0000892 · major
- King County Dept of Natural Resources and Parks WA0022527
- King County Dept of Natural Resources and Parks WA0029181 · major
- King County Dept of Natural Resources and Parks WA0029581 · major
- King County Dept of Natural Resources and Parks WA0032182
- King County Dept of Natural Resources and Parks WA0032247 · major
- Kinross-Crown Resources-Buckhorn Operations WA0052434
- Kitsap Co Dept of Public Works WA0032077
- Kitsap County Dept Public Works WA0030520 · major
- Kitsap County Dept of Public Works WA0023701
- Klickitat County PUD WA0023698
- Klickitat County PUD WA0050482
- Klickitat County PUD WA0051292
- LAKE UNION DRYDOCK CO WA0030074
- LEHIGH NORTHWEST CEMENT CO WA0001198
- LITTLE GOOSE LOCK AND DAM - USACE WA0026786
- LOTT Clean Water Alliance WA0037061 · major
- LOWER GRANITE LOCK AND DAM - USACE WA0026794
- LOWER MONUMENTAL LOCK AND DAM - USACE WA0026808
- LUMMI INDIAN BUSINESS COUNCIL WA0025658
- LUMMI INDIAN BUSINESS COUNCIL WA0025666
- LUMMI TRIBAL SEWER AND WATER WA0026727
- LYNDEN CITY OF WA0022578 · major
- La Conner Town WA0022446
- Lafarge PNW Inc. WA0002232
- Lake Stevens Sewer District WA0020893 · major
- Lakehaven Water and Sewer District WA0022624 · major
- Lakehaven Water and Sewer District WA0023451 · major
- Lamb Weston Richland WA0052141
- Lewis County Water & Sewer District #6 WA0037141
- Lewis County Water District #2 WA0024546
- Liberty Lake Sewer & Water District WA0045144 · major
- MAKAH TRIBAL COUNCIL WA0023213
- MCNARY LOCK AND DAM - USACE WA0026824
- MOCLIPS RIVER ESTATES WWTP WA0026603
- MONROE CITY WA0020486 · major
- MUKILTEO WATER & WASTEWATER DISTRICT WA0023396 · major
- Manke Lumber Company Superior Wood WA0040339
- Marine Fluid Systems, Inc. WA0032174
- Mason County Dept of Utilities & Waste Management WA0038075
- McNeil Island Stewardship WA Dept of Corrections WA0040002
- Medical Lake WRF WA0021148
- Metro Metals Northwest Inc WA0040991
- Midway Sewer District WA0020958 · major
- Milne Fruit Products WA0052060
- Milne Fruit Products Inc WA0052272
- Motive Power Marine Shipyard WA0041106
- NATIONAL PARK SERVICE WA0025569
- NAVAL AIR STATION WHIDBEY ISLAND WA0026760
- NAVAL AIRSTA WHIDBEY ISLAND - WA0003468
- NAVY BASE KITSAP WA0002780
- NORTHLAKE SHIPYARD INC WA0030864
- NPD Management LLC WA0991044
- NUCOR STEEL SEATTLE INC WA0031305
- National Fish and Oyster, Inc WA0038407
- Nippon Dynawave Packaging Company Longview WA0000124 · major
- Nisbet Oyster Co WA0040363
- Norm Nelson Inc. WA0991004
- North Pacific Paper Company, LLC WA0991016
- OCCIDENTAL CHEMICAL CORP WA0037265
- Ocean Companies WA0041971
- Ocean Spray Cranberries Inc WA0003271
- Olympia Oyster Company WA0037133
- Olympic Water & Sewer, Inc. WA0021202
- PACIFIC AQUACULTURE INC WA0026328
- PACIFIC AQUACULTURE INC WA0026336
- PACIFIC AQUACULTURE INC WA0026719
- PACIFIC COAST COAL COMPANY WA0030830
- PACIFIC FUNCTIONAL FLUIDS, LLC WA0038679
- PENN COVE WATER & SEWER DIST WA0029386
- PORT OF VANCOUVER WA0039942
- PORT TOWNSEND PAPER CORPORATION WA0000922 · major
- PUD No. 1 of Chelan County WA0991032
- PUD No. 1 of Chelan County WA0991033
- PUYALLUP STP WA0037168 · major
- PacWest Energy LLC WA0991025
- PacifiCorp Merwin Hydroelectric Project WA0041165
- PacifiCorp Swift No 1 Hydroelectric Project WA0041157
- PacifiCorp Yale Hydroelectric Project WA0041149
- Pacific Fishermen and Electric LLC WA0031046
- Pacific Shellfish - South Bend, LLC WA0002186
- Packaging Corporation of America - Wallula Mill WA0003697 · major
- Phillips 66 WA0002984 · major
- Phillips 66 Company WA0001945
- Phillips 66 Company WA0991035
- Phillips 66 Tacoma Terminal WA0000728
- Pierce County Public Works WA0039624 · major
- Ponderay Industries WA0045268 · major
- Port of Bellingham WA0001091 · major
- Port of Bellingham WA0032239
- Port of Seattle WA0024651
- Port of Sunnyside WA0052426
- Project Macoma WA0991051
- Public Utility District #1 of Kitsap County WA0030317
- Public Utility District No. 1 of Douglas County WA0991031
- Public Utility District No. 1 of Wahkiakum County WA0022667
- Puget Sound Energy WA0030601
- Puget Sound Energy WA0031291
- Puget Sound Energy WA0040827
- QUEETS VILLAGE WWTP WA0023442
- Regency Centers WA0991040
- Riverence Limited Partnership WA0040819
- Roche Harbor Utilities WA0021822
- SCRWRF WA0093317 · major
- SDS Lumber Company LLC WA0051152
- SEATTLE IRON AND METALS CORPORATION WA0031968
- SEH AMERICA INC WA0039616
- SQUAXIN ISLAND TRIBE WA0037320
- STANWOOD CITY WA0020290 · major
- SWINOMISH INDIAN TRIBAL COMMUN WA0025062
- SWINOMISH RESERVATION SWR DIST WA0024422
- Safe Coast Seafoods Washington WA0000361
- Schnitzer Steel of Tacoma WA0040347
- SeaPort Sound Terminal LLC WA0003204
- Seashore Villa Mobile Home Park/Emerald Properties WA0037273
- Seattle City Light WA0029670
- Selkirk School District WA0044938
- Shore Terminal LLC WA0039501
- Silver Cloud Inns and Hotels WA0041084
- Sitca LLC WA0991037
- Smith & Morrison Farms WA0031739
- Snoqualmie Pass Utility District WA0991042
- Snoqualmie Wastewater & Water Reclamation Facility WA0022403 · major
- South Bend Products LLC WA0040941
- South Bend Products, LLC WA0000159
- Southwest Suburban Sewer District WA0022764 · major
- Southwest Suburban Sewer District WA0022772 · major
- Specialty Chemical Products LLC WA0002861
- Stabbert Yacht & Ship LLC WA0030996
- Steelscape Washington LLC WA0040851 · major
- Stella -Jones Corporation WA0030805
- Stella Wastewater Treatment Plant WA0039152
- Stella-Jones Corporation WA0037953
- Stevens Pass Sewer District WA0029521
- Swift No 2 Hydro Electric Project WA0041131
- TAHOLAH VILLAGE WWTP WA0023434
- TAYLOR SHELLFISH FARMS WA0002607
- THE DALLES LOCK AND DAM WA0026701
- TOPPENISH, CITY OF WA0026123
- TOWN OF EATONVILLE WA0037231
- TULALIP TRIBES OF WASHINGTON WA0024805
- Taiga Building Products USA Ltd, DBA Exterior Wood WA0040711
- Taylor Bay Beach Club Inc. WA0037656
- Teck Cominco Incorporated WA0001317
- Tekni-Plex, Inc. WA0003492
- The Port of Olympia WA0040533
- The Town of Pe Ell WA0020192
- Three Rivers Regional Wastewater Authority WA0037788 · major
- Thurston County Public Works WA0037290
- Thurston County Public Works WA0040291
- Thurston County Public Works WA0042099
- Tidewater Barge Lines/Tidewater Terminal Company WA0038776
- Town Of Oakesdale WA0044792
- Town of Albion WA0022608
- Town of Colton WA0023175
- Town of Concrete WA0020851
- Town of Coupeville WA0029378
- Town of Endicott WA0023981
- Town of Fairfield WA0045489
- Town of Garfield WA0044822
- Town of Ione WA0045373
- Town of Metaline WA0020699
- Town of Metaline Falls WA0991009
- Town of Naches WA0022586
- Town of Odessa WA0045560
- Town of Reardan WA0045306
- Town of Rockford WA0044831
- Town of Rosalia WA0044687
- Town of Spangle WA0991010
- Town of St John WA0021229
- Town of Twisp WA0023370
- Town of Wilbur WA0044920
- Town of Winthrop WA0020885
- TransAlta Centralia Mining LLC WA0037338 · major
- TransAlta Centralia Mining LLC WA0040215
- Transalta Centralia Generation LLC WA0001546 · major
- Tree Top, Inc WA0051527
- Tree Top, Inc. WA0002437
- Twin City Foods, Inc. WA0021768
- U.S. ARMY CORPS OF ENGINEERS WA0026891
- U.S. BUREAU OF RECLAMATION - COULEE DAM WA0026867
- US ARMY YAKIMA TRAINING CENTER WA0021962
- US Department of Energy - Pacific NW Site Office WA0040649
- US OIL AND REFINING CO. WA0001783 · major
- Unknown WA0000086
- Unknown WA0000281 · major
- Unknown WA0000761 · major
- Unknown WA0000884 · major
- Unknown WA0003671
- Unknown WA0003699
- Unknown WA0003727
- Unknown WA0024961
- Unknown WA0039641
- Unknown WA0991012
- Unknown WA0991014
- Unknown WA0991024
- VB Homestead Farms Inc WA0052311
- Vaagen Bros Lumber Inc WA0133004
- Vigor Industrial LLC WA0002615
- WA STATE PATROL WA0031836
- WAPATO, CITY OF WA0050229 · major
- WASHINGTON BEEF LLC WA0050202
- WASHINGTON BULB CO INC WA0031721
- Wa State Parks & Recreation Commission WA0038709
- Wa State Parks & Recreation Commission WA0039829
- Waitsburg City of WA0045551
- Warm Beach Christian Camp WA0029904
- Washington State Department of Corrections WA0038938
- Washington State Dept. of Ecology WA0991068
- Washington State Parks & Recreation Commission WA0023787
- Washington Water Service Company WA0029891
- Water & Wastewater Services WA0030597
- West Sound Utility District WA0020346 · major
- WestRock CP, LLC WA0000850
- WestRock Longview, LLC WA0000078 · major
- Western Towboat Company WA0032191
- Western Wood Preserving Company WA0040738
- Wiegardt Bros WA0038806
- YAKAMA NATION LEGENDS CASINO WA0026743
- Yakima County Public Services WA0052132
- Yakima Regional POTW WA0024023 · 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