§401 Certifications: NPDES Permits
General NPDES Permits in Idaho
Tiering Determination
The guide below has been developed to help applicants applying for coverage under NPDES general permits (e.g., Construction Stormwater General Permit, Multi-Sector General Permit for Stormwater Discharges from Industrial Activities) determine whether the receiving water body in the project area should receive Tier 1 or Tier 2 antidegradation protection.
§401 Certifications
DEQ has issued or proposes to issue the following §401 certifications of general NPDES permits:
- Aquaculture Facilities, including Fish Processors (final)
- Drinking Water Treatment Facilities (final)
- Concentrated Animal Feeding Operations (CAFOs) (final) | Antidegradation Review
- Ground Water Remediation Discharge Facilities (final)
- Multi-Sector Industrial Activities (final)
- Pesticide Application (2016 final)
- Small Suction Dredge Mining (final)
- Stormwater Construction Activities (2012 final) | Stormwater Construction Activities (2017 final)
- Vessels and Small Vessels (final)
To view information regarding the general NPDES permits for which these certifications have been or are proposed to be issued, visit the EPA Region 10 General NPDES Permits webpage.
NPDES Permits Requiring Individual Certification
§401 Certifications
County | Permittee | Permit Number | Water Body Impacted | Assessment Unit | Issuance Date |
---|---|---|---|---|---|
Ada | Ada County Highway District, Boise State University, City of Boise, City of Garden City, Drainage District #3, and Idaho Transportation Department District #3 | IDS-027561 | Boise River and associated tributaries | ID17050114SW011a_06, ID170050114SW005_06, ID17050114SW001_06, ID17050114SW008_03, ID17050114SW010_02 and 03, ID17050114SW010_03 | 11/01/12 |
Ada | Boise (City of) Lander Street Wastewater Treatment Facility | ID-00020443 | Boise River, lower Snake River | ID17050114SW005_06 | 08/31/12 |
Ada | Boise (City of) West Boise Wastewater Treatment Facility | ID-002398-1 | Boise River, Dixie Slough | ID17050114SW005_06 | 05/24/13 |
Ada | Boise (City of) West Boise Wastewater Treatment Facility | ID-002398-1 | Boise River, lower Snake River | ID17050114SW005_06 | 08/31/12 |
Ada | Star Sewer and Water District Wastewater Treatment Plant | ID-002359-1 | Lawrence-Kennedy Canal | Nearest downstream AUs are ID17050114SW005_02, Mill Slough, and ID17050114SW005_06a, Boise River | 02/20/15 |
Ada | Avimor Water Reclamation Facility | ID-0028371 | Spring Valley Creek | ID17050114SW013_03 | 02/12/16 |
Adams | New Meadows (City of) Wastewater Treatment Plant | ID-002315-9 | Little Salmon River | ID17060210SL007_04 | 06/04/13 |
Bannock | Pocatello (City of) Wastewater Treatment Facility | ID-0021784 | Portneuf River above American Falls Reservoir | ID17040208SK001_05 | 07/12/12 |
Bingham | Blackfoot (City of) Wastewater Treatment Facility | ID-002004-4 | Snake River | ID17040206SK022_04 | 06/14/13 |
Bingham | Eastern Idaho Regional Wastewater Treatment Authority Oxbow Wastewater Treatment Plant | ID-00201330 | Snake River | ID17040206SK022_04 | 03/21/14 |
Bingham | Firth (City of) Wastewater Treatment Facility | ID-0024988 | Snake River | ID17040206SK022_04 | 02/11/13 |
Bingham | Aberdeen (City of) | ID0020176 | Hazard Creek (Aberdeen Drain) and Little Hole Draw on American Falls Reservoir | 17040206SK025_02a | 12/15/15 |
Blaine | Hailey (City of) Wastewater Treatment Plant | ID-0020303 | Big Wood River | ID17040219SK004_05 | 04/13/12 |
Blaine | Ketchum (City of) Wastewater Treatment Plant | ID-0020281 | Big Wood River | ID17040219SK004_05 | 04/13/12 |
Blaine | The Meadows LLC Wastewater Treatment Plant | ID-0024422 | Big Wood River | ID17040219SK007_05 | 04/16/12 |
Bonner | Priest River (City of) Wastewater Treatment Plant | ID-002080-0 | Pend Oreille River | ID17010214PN001_08 | 09/29/11 |
Bonneville | Idaho Falls (City of) Wastewater Treatment Plant | ID-0021261 | Snake River | ID17040201SK001_04 | 08/06/12 |
Boundary | Bonners Ferry (City of) Wastewater Treatment Plant | ID-002022-2 | Kootenai River | ID17010104PN029_08 | 09/16/11 |
Camas | Fairfield (City of) Wastewater Treatment Facility | ID-0024384 | Soldier Creek | 17040220SK011_02 | 04/24/15 |
Canyon | Greenleaf (City of) Wastewater Treatment Plant | ID-002830-4 | West End Drain | Nearest downstream AU is ID17050114SW001_02, Dixie Slough | 11/02/12 |
Canyon | Notus (City of) Wastewater Treatment Plant | ID-002101-6 | Conway Gulch | ID17050114SW001_06 | 08/19/13 |
Canyon | Caldwell (City of) Wastewater Treatment Plant | ID-0021504 | Boise River | 17050114SW005_06b | 07/19/16 |
Canyon | Parma (City of) Wastewater Treatment Facility | ID-0021776 | Sand Hollow Creek | ID17050114SW017_03 | 10/24/16 |
Caribou | Grace (City of) Wastewater Treatment Facility | ID-0023825 | Bear River at the Grace Forebay | ID16010202BR009_06 | 09/02/14 |
Cassia | McCain Foods USA - Burley Factory | ID-0000612 | Snake River | ID17040209SK001_07 | 09/11/14 |
Clearwater | Weippe (City of) Wastewater Treatment Plant | ID-0020354 | Jim Ford Creek | ID17060306CL035_03 | 09/08/14 |
Elmore | Glenns Ferry (City of) Wastewater Treatment Plant | ID-002200-4 | Mid-Snake and Portneuf Rivers | ID17050101SW005_07 | 10/04/11 |
Fremont | Ashton (City of) Wastewater Treatment Plant | ID-0023710 | Unnamed creek, tributary to Spring Creek | ID17040202SK001_02 | 01/16/14 |
Idaho | Fenn Ranger Station Wastewater Treatment Plant | ID-002071-1 | Selway River | ID17060302CL001_06 | 09/10/12 |
Idaho | Red River Ranger Station Wastewater Treatment Plant | ID-002069-9 | South Fork Red River | N/A | 02/03/12 |
Idaho | Riggins (City of) Wastewater Treatment Plant | ID-002093-1 | Salmon River | ID17060209SL011_07 | 08/07/12 |
Idaho | Slate Creek Ranger Station Wastewater Treatment Plant | ID-0020737 | Salmon River | ID17060209SL011_07 | 09/04/12 |
Idaho | Elk City Water and Sewer Association Wastewater Treatment Facility | ID-002201-2 | Elk Creek | ID17060305CL056_03 | 02/26/15 |
Kootenai | Coeur d'Alene (City of) MS4 | IDS-028215 | Coeur d'Alene Lake, Spokane River | Multiple outfalls | 10/22/08 |
Kootenai | Idaho Transportation Department MS4 | IDS-028223 | Fernan Creek, Coeur d'Alene Lake | Multiple outfalls | 10/22/08 |
Kootenai | Lakes Highway District MS4 | IDS-028207 | Hayden Lake | Multiple outfalls | 10/22/08 |
Kootenai | Post Falls Highway District MS4 | IDS-028193 | Spokane River | Multiple outfalls | 10/22/08 |
Kootenai | Post Falls (City of) MS4 | IDS-028231 | Spokane River | Multiple outfalls | 10/22/08 |
Kootenai | Post Falls (City of) Wastewater Treatment Plant | ID-0025852 | Spokane River | ID17010305PN003_04 | 06/05/14 |
Kootenai | Hayden Area Regional Sewer Board | ID-002659-0 | Spokane River | ID17010305PN004_04 | 06/05/14 |
Kootenai | Coeur d'Alene (City of) Wastewater Facility | ID-002285-3 | Spokane River | ID17010305PN004_04 | 06/05/14 |
Nez Perce | Lewiston (City of) Wastewater Treatment Facility | ID-0022055 | Clearwater River | ID17060306CL001_07 | 10/09/15 |
Owyhee | Homedale (City of) Wastewater Treatment Facility | ID-002042-7 | Snake River | ID17050103SW001_07 | 05/08/13 |
Owyhee | Marsing (City of) Wastewater Treatment Facility | ID0020427 | Snake River | 17050103SW001_07 | 09/11/15 |
Payette | Fruitland (City of) Wastewater Treatment Plant | ID-002033-8 | Snake River | ID17050115SW001_08 | 09/20/11 |
Payette | Fruitland (City of) Wastewater Treatment Plant | ID-002119-9 | Payette River | ID17050122SW001_06 | 09/20/11 |
Payette | Payette (City of) Wastewater Treatment Plant | ID-0020672 | Payette River | ID17050122SW001_06 | 09/02/14 |
Payette | New Plymouth (City of) Wastewater Treatment Facility | ID-0020389 | Unnamed Drainage Ditch to Payette River | Man-made | 06/17/16 |
Power | American Falls (City of) | ID-002075-3 | Snake River below American Falls Dam | ID17040209SK011_07 | 02/21/14 |
Shoshone | Clarkia Water and Sewer District Wastewater Treatment Plant | ID-002507-1 | St. Maries River | ID17010304PN015_05 | 11/14/11 |
Shoshone | Mullan Wastewater Treatment Plant, South Fork Coeur d'Alene River Sewer District | ID0021296 | South Fork Coeur d'Alene River | ID17010302PN011_03 | 07/15/13 |
Shoshone | South Fork Coeur d'Alene River Sewer District, Page Wastewater Treatment Plant | ID0021300 | South Fork Coeur d'Alene River | ID17010302PN001_03 | 07/15/13 |
Shoshone | Smelterville Wastewater Treatment Plant | ID0020117 | South Fork Coeur d'Alene River | ID17010302PN001_03 | 07/15/13 |
Shoshone | U.S. Silver Corporation - Coeur and Galena Mines and Mills | ID-000002-7 | Lake Creek, South Fork Coeur d'Alene River | Multiple outfalls | 09/29/06 |
Twin Falls | Independent Meat Company | ID-0000388 | Rock Creek | ID17040212SK013_04 and ID17040212SK013_05 | 10/26/15 |
Washington | Weiser (City of) Wastewater Treatment Plant | ID-002029-0 | Snake River | ID17050201SW004_08 | 10/04/11 |