Passage Data · Check a report · Use it from your AI

Discharge permits in Colorado

367 active individual NPDES permits with limits in EPA's file of Oct 22, 2026.

By industry

Sewage treatment plants (226)

A-Ventures LLC CO0040819
Academy School Dist 20 CO0048429
Alamosa City of CO0044458 · major
Antonito Town of CO0040975
Arapahoe County Water and Wastewater Authority CO0040681 · major
Aspen Consolidated Sanitation District CO0026387 · major
Aspen Park Metropolitan District CO0000001
Avondale Water and Sanitation District CO0021075
Baca Grande Water and Sanitation District CO0046914
Bayfield Town of CO0048291
Bear Ranch LLC CO0048900
Berthoud Town of CO0046663 · major
Berthoud Town of CO0048998
Black Hawk/Central City Sanitation District CO0046761 · major
Boulder City of CO0024147 · major
Boulder County CO0047651
Boxelder Sanitation District CO0020478 · major
Brookside Chateau LLC CO0030261
Broomfield City and County CO0026409 · major
Brush City of CO0021245 · major
Buena Vista Sanitation District CO0045748 · major
Centennial Water and San Dist CO0037966 · major
Clear Creek Skiing Corp CO0040835
Clear Creek WWTP CO0046574
Clifton Sanitation District CO0033791 · major
Cokedale Town of CO0048461
Collbran Town of CO0040487
Colorado Air & Space Port CO0047741
Colorado City Metropolitan District CO0021121
Colorado Department of Local Affairs CO0046311
Colorado Dept of Corrections CO0046094
Colorado Mountain Resort Investors LLC CO0046566
Colorado Springs Utilities CO0026735 · major
Colorado Springs Utilities CO0046850 · major
Copper Mountain Consolidated Metropolitan District CO0021598 · major
Core Civic CO0046795
Cortez Sanitation District CO0027545 · major
Costilla County Water and Sanitation District CO0036528
Cottonwood Canyon LLC CO0026468
County Road 50 Homeowners Association CO0049022
Craig City of CO0040037 · major
Crawford Town of CO0037729
Creede City of CO0040533
Cripple Creek City of CO0039900 · major
Cucharas Sanitation and Water District CO0043745
Dao House LLC CO0042820
DeBeque Town of CO0048135
Del Norte Town of CO0020281
Delta City of CO0039641 · major
Dolores Town of CO0040509
Dominion Water and Sanitation District CO0041645
Donala Water and Sanitation District CO0042030 · major
Dundee Resort Development LLC CO0023876
Durango City of CO0024082 · major
Durango La Plata County Airport CO0047457
Eagle River WSD CO0021369 · major
Eagle River Water & San District CO0037311 · major
Eagle River Water & Sanitation Dist CO0024431 · major
Eagle Town of CO0048241 · major
East Aurora Ventures LLC CO0046221
Eaton Town of CO0047414
Eden Valley Institute CO0048985
Ellicott Utilities Company CO0047252
Erie Town of CO0048445 · major
Estes Park Sanitation District CO0020290 · major
Evans City of CO0047287 · major
Evergreen Metropolitan District CO0031429
Fairplay Town of CO0040088
Fairways Metropolitan District CO0048411
Florissant Water and Sanitation District CO0041416
Forest Hills Metro District CO0037044
Forest Lake Metro Dist CO0048160
Fort Collins City of CO0026425 · major
Fort Collins City of CO0047627 · major
Fort Lupton City of CO0021440 · major
Fort Morgan City of CO0044849 · major
Fountain Sanitation District CO0020532 · major
Fowler Town of CO0021571
Fox Acres Community Services Corp CO0049019
Fraser Town of CO0040142 · major
Fremont Sanitation District CO0039748 · major
Frisco Sanitation District CO0020451 · major
Frost Creek Clubhouse WWTF CO0049036
Fruita City of CO0048854 · major
Genesee WSD CO0022951
Georgetown Town of CO0027961
Glen Echo Resort LLC CO0000009
Glenwood Springs City of CO0048852 · major
Golden City of CO0042170
Granby Sanitation District CO0020699 · major
Grand Mesa Metro Dist 2 CO0023485
Greeley City of CO0040258 · major
Grizzly Peak Water Sales and Distribution LLC CO0039691
Gunnison City of CO0041530 · major
Gunnison County CO0048873
Gypsum Town of CO0048830
Hayden Town of CO0040959
Hidden View Estates HOA CO0048861
Hotchkiss Town of CO0044903
Idaho Springs City of CO0041068
Jefferson County Public Schools R-1 CO0047988
Johnstown Town of CO0021156
Johnstown Town of CO0047058
Julesburg Town of CO0021113
Keenesburg Town of CO0041254
Kersey Town of CO0021954
Kiowa Town of CO0033405
Kit Carson Town of CO0048858
Kittredge Sanitation and Water District CO0023841
Kremmling Sanitation District CO0048437
La Jara Town of CO0020150
La Junta City of CO0021261 · major
La Veta Town of CO0032409
Lafayette City of CO0023124 · major
Lake City Town of CO0040673
Lake Eldora Water and Sanitation Dist CO0020010
Las Animas City of CO0040690
Leadville Sanitation District CO0021164 · major
Lochbuie Town of CO0047198 · major
Loma Linda Sanitation District CO0000011
Longmont City of CO0026671 · major
Louisville City of CO0023078 · major
Loveland City of CO0026701 · major
Lower Fountain Metro Sewage Disposal Dist CO0000005 · major
Mancos Town of CO0021687
Mead Town of CO0046876
Meeker Sanitation District CO0047139
Mesa Co Grand Junction City of CO0040053 · major
Mesa WSD CO0048143
Metro Water Recovery CO0026638 · major
Metro Water Recovery CO0048959 · major
Mid Valley Metropolitan Dist CO0049026
Milliken Town of CO0042528
Monarch Mountain Lodge WW Co & Inn-Vestors Inc CO0028444
Monte Vista City of CO0023132 · major
Monte Vista City of CO0036927 · major
Montrose City of CO0039624 · major
Monument SD&Palmer Lake SD&Woodmoor WSD 1 CO0020435 · major
Morrison Town of CO0041432
Morrison Creek Metropolitan Water and Sanitation District CO0022969
Mountain Valley Estates LLC CO0049021
Mountain Water and Sanitation District CO0022730
Mt Crested Butte Water and Sanitation Dist CO0027171 · major
Nederland Town of CO0020222
North La Junta Sanitation District CO0039519
Northglenn City of CO0036757 · major
Nucla Town of CO0048945
Oak Meadows Service Company CO0045802
Olathe Town of CO0020907
Old Homestead Park Ltd CO0049000
Pagosa Area Water and San Dist CO0031755 · major
Palisade Town of CO0000012
Paonia Town of CO0047431
Parker Water and Sanitation District CO0046507 · major
Penrose Sanitation District CO0046523
Perry Park Water and Sanitation District CO0022551
Perry Park Water and Sanitation District CO0043044
Petroleum Wholesale LP CO0048847
Pinery Water and Wastewater Dist CO0041092 · major
Plum Creek Water Reclamation Authority CO0038547 · major
PowderMonarch LLC CO0031399
Pueblo City of CO0026646 · major
Pueblo West Metropolitan District CO0040789 · major
RE1 Valley School District CO0049042
Rangely Town of CO0000010
Red Cliff Town of CO0021385
Redstone Water and Sanitation District CO0046370
Renovation Church dba Peaceful Valley Ranch LLC CO0048828
Rifle City of CO0048151 · major
Roaring Fork Water and San District CO0044750
Rocky Ford City of CO0023850 · major
Royal Gorge Bridge and Park Co CO0029033
Southern Ute Indian Tribe CO0022853
Salida City of CO0040339 · major
San Lazaro Park Properties LLP CO0020184
Security Sanitation District CO0024392 · major
Seventh-Day Adventist Assoc of Colorado CO0030112
Shwayder Camp of Temple Emanuel CO0047473
Silverthorne Dillon Joint Sewer Authority CO0020826 · major
Silverton Town of CO0020311
Snowmass Water and Saniation Dist CO0023086 · major
South Adams County WSD CO0026662 · major
South Fort Collins Sanitation District CO0020737 · major
South Platte Renew CO0032999 · major
Spring Valley Metropolitan District 1 CO0046965
Spring Valley Sanitation District CO0046124
St Marys Glacier WSD CO0023094
St Vrain Sanitation District CO0041700 · major
Steamboat Lake Water and Sanitation Dist CO0035556
Steamboat Springs City of CO0020834 · major
Sterling City of CO0026247 · major
Stonegate Village Metropolitan District CO0040291 · major
Summit County Government CO0029955 · major
Sunlight Inc CO0038598
Superior Metropolitan District No 1 CO0043010 · major
The United States Department of Interior National Park Service CO0034398
Tabernash Meadows Water and Sanitation Dist CO0045501
Telluride Town of CO0041840 · major
Three Lakes Water and Sanitation District CO0037681 · major
Tiny Town Company LLC CO0036129
Trinidad City of CO0024015
Trinidad City of CO0031232 · major
United States Department of the Army - Fort Carson CO0021181 · major
University of Denver CO0047317
Upper Blue Sanitation Dist CO0045420 · major
Upper Blue Sanitation District CO0021539 · major
Upper Thompson Sanitation District CO0031844 · major
Upper Valley San Dist CO0047147
Victor City of CO0024201
Vista Verde Village CO0037702
Volunteers of America Care Fac CO0042617
Walden Town of CO0020788
Walsenburg City of CO0020745
Wellington Town of CO0046451
West Jefferson County Metro Dist CO0020915
West Montrose Sanitation District CO0030449
Westminster City of CO0024171 · major
Widefield Water and Sanitation District CO0021067 · major
Windsor Town of CO0020320 · major
Winter Park Water and Sanitation District CO0026051
Woodland Park City of CO0043214
Woodlin School District R-104 CO0047970
Woodmen Hills Metropolitan District CO0047091 · major
Wray City of CO0023833
YMCA of the Pikes Peak Region CO0045993
Young Life Campaign Inc CO0045411

Industrial and other (141)

ARC McClain Canyon LLC CO0038342 · Bituminous Coal - Underground
Anadarko DJ Gas Processing LLC CO0048593 · Oil And Gas Field Services
Arapahoe County Water and Wastewater Authority CO0047589 · major · Water Supply
Arrupe Jesuit High School CO0048962 · Special Trade Contractors
Asphalt Specialties Co Inc CO0049020 · Refuse Systems
Aurora City of CO0049053 · Water Supply
BH Mining Company LLC CO0043168 · Gold Ores
Battle Mountain Resources Inc CO0045675 · Gold Ores
Blue Mountain Energy Inc CO0038024 · Bituminous Coal And Lignite - Surface
Bowie Resources LLC CO0044776 · Bituminous Coal - Underground
Bowie Resources LLC CO0049045 · Bituminous Coal - Underground
Brighton City of CO0046728 · Water Supply
Brushco Farms CO0048862 · Food Crops Grown Under Cover
Cdot COS000005 · major · Air, Water, & Solid Waste Management
CEMEX Construction Materials South LLC CO0048771 · Cement, Hydraulic
CF&I Steel LP dba Rocky Mountain Steel Mills CO0000621 · major · Blast Furnaces And Steel Mills
CRG Mining LLC CO0049023 · Gold Ores
CRG Mining LLC CO0049024 · Gold Ores
Canon Potato Co LLC CO0048944 · Farm Product Warehousing And Storage
Cargill Meat Solutions CO0044270 · Meat Packing Plants
Clean Harbors Deer Trail LLC CO0042064 · major · Refuse Systems
Climax Molybdenum Company CO0000230 · major · Rolling Mill Machinery
Climax Molybdenum Company CO0041467 · major · Ferroalloy Ores, Except Vanadium
Climax Molybdenum Company - Climax Mine CO0000248 · major · Ferroalloy Ores, Except Vanadium
Colo Div of Reclamation, Mining and Safety CO0001244 · Uranium-Radium-Vanadium Ores
Colorado Department of Local Affairs CO0048801 · Water Supply
Colorado Dept of Transportation CO0026069 · Bridge, Tunnel, & Elevated Highway
Colorado Springs City of COS000004 · major · Air, Water, & Solid Waste Management
Colowyo Coal Co LP CO0045161 · Bituminous Coal And Lignite - Surface
Coorstek Inc CO0044890 · Porcelain Electrical Supplies
Cotter Corporation/Highbury Resources CO0036251 · Uranium-Radium-Vanadium Ores
Cripple Creek and Victor Gold Mining Co CO0024562 · major · Gold Ores
Cripple Creek and Victor Gold Mining Co CO0046540 · Gold Ores
Cripple Creek and Victor Gold Mining Company CO0043648 · major · Gold Ores
Crossfire Aggregate Services LLC CO0035024 · Construction Sand And Gravel
Denver Federal Center CO0034878 · Nonclassifiable Establishments
Denver City and County COS000001 · major · Air, Water, & Solid Waste Management
Denver City and County COS000008 · Airports, Flying Fields, & Services
Denver Water CO0048721 · Irrigation Systems
Denver Water CO0048955 · Irrigation Systems
Denver Zoological Foundation Inc CO0048951 · Heavy Construction
Eagle Peaks Mining LLC CO0048971 · Gold Ores
Eagle Valley Clean Energy LLC CO0048901 · Electric Services
Elk Ridge Mining and Reclamation LLC CO0000213 · Bituminous Coal And Lignite - Surface
Elk Ridge Mining and Reclamation LLC CO0049069 · Bituminous Coal And Lignite - Surface
Energy Fuels Resources USA Inc CO0047562 · Uranium-Radium-Vanadium Ores
Evergreen Natural Resources LLC CO0047767 · Crude Petroleum And Natural Gas
Evergreen Natural Resources LLC CO0047776 · Crude Petroleum And Natural Gas
Evergreen Natural Resources LLC CO0048003 · Crude Petroleum And Natural Gas
Evergreen Natural Resources LLC COG900006 · Crude Petroleum And Natural Gas
FSM Group LLC CO0048839 · Petroleum Bulk Stations & Terminals
Federal Highway Administration - Central Federal Lands CO0034860 · Nonclassifiable Establishments
Frederick Town of CO0049076 · Water Supply
Front Range Energy LLC CO0047635 · Industrial Organic Chemicals
Galloway Inc dba Blue Valley Ranch CO0049065 · Fish Hatcheries And Preserves
Glenwood Hot Springs Lodge and Pool Inc CO0048958 · Amusement And Recreation
Glenwood Springs City of CO0048815 · Refuse Systems
GlobalAI (Colorado) LLC CO0032158 · major · Photographic Equipment And Supplies
Gold Tamers LLC CO0049055 · Gold Ores
Grand Island Resources LLC CO0032751 · Gold Ores
HWA Inc CO0048984 · Sporting And Recreational Camps
Holcim US Inc CO0000671 · Cement, Hydraulic
Homestake Mining Company CO0022756 · Uranium-Radium-Vanadium Ores
Idaho Pacific Colorado Corp CO0048938 · Nonclassifiable Establishments
Iron Mountain Hot Springs LLC CO0048577 · Amusement And Recreation
JBS USA CO0027707 · major · Meat Packing Plants
JRS Mining LLC CO0049033 · Gold Ores
Kairoi Residential CO0049003 · Special Trade Contractors
LKA International Inc CO0048119 · Gold Ores
Larimer County CO0049056 · Refuse Systems
Leprino Foods Company CO0043958 · Cheese, Natural And Processed
Leprino Foods Company CO0048860 · Cheese, Natural And Processed
Lockheed Martin Space Systems Co CO0001511 · major · Guided Missiles And Space Vehicles
Loveland City of CO0048811 · Amusement And Recreation
Loveland City of CO0049038 · Automobile Parking
McDonald Farms Enterprises Inc CO0049005 · Heavy Construction
Micah Eaton CO0049072 · Gold Ores
Milliken Town of CO0046485 · Water Supply
MineWater Finance LLC CO0038334 · major · Gold Ores
Minrec Inc CO0048233 · Bituminous Coal - Underground
Molson Coors USA LLC CO0001163 · major · Malt Beverages
Molson Coors USA LLC CO0048964 · Malt Beverages
Mountain Coal Company LLC CO0038776 · Bituminous Coal - Underground
Mt Emmons Mining Co CO0035394 · major · Lead And Zinc Ores
New Elk Coal Company LLC CO0000906 · Bituminous Coal - Underground
Noosa Yoghurt LLC CO0048996 · Dry, Condensed, Evaporated Products
OGRIS Operating LLC CO0048054 · Crude Petroleum And Natural Gas
OGRIS Operating LLC CO0048062 · Crude Petroleum And Natural Gas
Ogilby Corp dba Avalanche Ranch Cabins and Hotsprings CO0048823 · Amusement And Recreation
Onward Energy LLC CO0048691 · Electric Services
Ouray City of CO0048983 · Amusement And Recreation
Oxbow Mining LLC CO0000132 · Bituminous Coal - Underground
Poc-1 LLC CO0000051 · Crude Petroleum And Natural Gas
PPF OFF 1601 Wewatta LLC CO0000008 · Nonresidential Building Operators
Pacificorp CO0046931 · Metal Ores
Paramount Global CO0048952 · Metal Mining Services
Peabody Sage Creek Mining LLC CO0048275 · major · Bituminous Coal - Underground
Platte River Power Authority CO0048982 · Water Supply
Princeton Holdings LLC CO0048970 · Amusement And Recreation
Public Service Co of Colorado CO0000612 · major · Electric Services
Public Service Co of Colorado CO0001104 · major · Electric Services
Public Service Co of Colorado CO0001112 · major · Electric Services
Public Service Company of Colorado CO0001121 · major · Electric Services
Resurrection Mining Company CO0000591 · major · Lead And Zinc Ores
Rio Grande Silver Inc CO0048960 · Lead And Zinc Ores
SWG Arapahoe LLC CO0000002 · Electric Services
Salida City of CO0048966 · Amusement And Recreation
Seneca Coal Co LLC CO0000221 · major · Bituminous Coal And Lignite - Surface
Shea Apartment Communities CO0049006 · Apartment Building Operators
Snowcap Coal Company Inc CO0027146 · Bituminous Coal And Lignite - Surface
Steamboat Springs Health and Recreation Association CO0048999 · Amusement And Recreation
Sterling Ethanol LLC CO0047066 · Industrial Organic Chemicals
Suncor Energy USA Inc CO0001147 · major · Petroleum Refining
Sunrise Mining LLC CO0049054 · Gold Ores
The United States Department of Interior National Park Service CO0034622 · Water Supply
TMR Inc CO0049074 · Membership-Basis Organization Hotels
Thorin Resources LLC CO0000003 · Silver Ores
Todd Creek Village Metropolitan District CO0047341 · Water Supply
Transit Waste LLC-Bondad Landfill COR050005 · Refuse Systems
Trapper Mining Inc CO0032115 · Bituminous Coal And Lignite - Surface
Turquoise Connection The CO0048939 · Gold Ores
Twentymile Coal Company CO0042161 · Bituminous Coal - Underground
Twentymile Coal LLC CO0027154 · major · Bituminous Coal - Underground
Twentymile Coal LLC CO0036684 · Bituminous Coal And Lignite - Surface
U.S. Dept. of Interior, Bureau of Land Management-Front Range District CO0035017 · Water Supply
U.S. General Services Administration CO0035033 · Nonclassifiable Establishments
United States Army Fort Carson Landfills CO0034771 · National Security
United States Bureau of Reclamation CO0021717 · major · Land, Mineral, Wildlife Conservation
United States Fish and Wildlife Service - Leadville National Fish Hatchery CO0000582 · Fish Hatcheries And Preserves
US Fish and Wildlife Service - Hotchkiss National Fish Hatchery CO0000086 · Fish Hatcheries And Preserves
USAF FE Warren AFB CO0034789 · National Security
Usaf-Air Force Academy CO0020974 · major · Colleges And Universities
USFWS - Rocky Mountain Arsenal NWR CO0035009 · Water Supply
Union Gold Inc a subsidary of MW Platoro LLC CO0038954 · major · Silver Ores
Union Pacific Railroad CO0047554 · Railroads, Line-Haul Operating
Union Pacific Railroad CO0048986 · Railroads, Line-Haul Operating
Walker Ruby Mining Co Inc CO0037206 · Gold Ores
Wattenberg Improvement Assn CO0046477 · Water Supply
Western Sugar Cooperative CO0041351 · major · Beet Sugar
Wiggins Town of CO0048853 · Water Supply
Williams Fork Mining LLC CO0034142 · Bituminous Coal And Lignite - Surface

Source: EPA ECHO, Oct 22, 2026. As JSON: /api/v1/permits?state=CO · MCP: https://passage-data.com/mcp · All states