Navajo Nation NPDES Permits
EPA’s Pacific Southwest (Region 9) issues all NPDES permits on Navajo Nation tribal lands. See the table below for final and draft permits issued by EPA.
Draft and Final NPDES Permits
The table(s) below contain all final (i.e. active) and draft (i.e. proposed) NPDES permits issued by EPA’s Pacific Southwest (Region 9) within Navajo Nation lands. It includes permits for individual facilities, general permits, and stormwater permits. Click on the facility/permit name to view the permit and supporting documents.
For State-Issued Permits: Arizona Pollutant Discharge Elimination SystemExit
See Also: Arizona Tribal Lands NPDES Permits
| Facility / Discharger | Location | Permit Number | Permit Status |
|---|---|---|---|
| APS Four Corners Power Plant | San Juan County, NM | NN0000019 | Draft |
| Facility / Discharger | Location | Permit Number | Permit Status | Effective Date | Expiration Date |
|---|---|---|---|---|---|
| English Lease Boundary Butte Nacogdoches Oil & Gas Inc. |
San Juan County, UT | NN0020133 | Final | 4/1/2017 | 3/31/2022 |
| Chinle WWTF Navajo Tribal Utility Authority (NTUA) |
Chinle, AZ | NN0020265 | Final | 9/1/2018 | 8/31/2023 |
| Kayenta WWTF Navajo Tribal Utility Authority (NTUA) |
Kayenta, AZ | NN0020281 | Final | 8/1/2018 | 7/31/2023 |
| Tuba City WWTF Navajo Tribal Utility Authority (NTUA) |
Tuba City, AZ | NN0020290 | Final | 6/1/2016 | 5/31/2021 |
| Shiprock WWTF Navajo Tribal Utility Authority (NTUA) |
Shiprock, NM | NN0020621 | Final | 3/1/2018 | 2/28/2023 |
| Nenahnezad Community School U.S. Bureau of Indian Affairs |
Fruitland, NM | NN0020800 | Final | 10/1/2014 | 9/30/2019 |
| Crystal Boarding School U.S. Bureau of Indian Affairs |
Navajo, NM | NN0020869 | Final | 7/1/2015 | 6/30/2020 |
| Ojo Encino Day School U.S. Bureau of Indian Affairs |
Cuba, NM | NN0020915 | Final | 6/1/2015 | 5/31/2020 |
| Wingate High School U.S. Bureau of Indian Affairs |
Fort Wingate, NM | NN0020958 | Final | 2/1/2016 | 1/31/2021 |
| Pueblo Pintado Old Boarding School WWTF U.S. Bureau of Indian Affairs |
McKinley County, NM | NN0020991 | Final | 7/1/2015 | 6/30/2020 |
| Lake Valley Boarding School U.S. Bureau of Indian Affairs |
Lake Valley, NM | NN0021016 | Final | 6/1/2015 | 5/31/2020 |
| Window Rock WWTF Navajo Tribal Utility Authority (NTUA) |
Fort Defiance, AZ | NN0021555 | Final | 2/1/2016 | 1/31/2021 |
| Cameron Trading WWTF Cameron Trading Post |
Cameron, AZ | NN0021610 | Final | 9/1/2017 | 8/31/2022 |
| Black Mesa Complex Peabody Western Coal Company |
Navajo County, AZ | NN0022179 | Final | 11/1/2010 | 10/31/2015 |
| Ganado WWTF Navajo Tribal Utility Authority (NTUA) |
Apache County, AZ | NN0022195 | Final | 2/1/2016 | 1/31/2021 |
| Pinon WWTF Navajo Tribal Utility Authority (NTUA) |
Pinon, AZ | NN0024228 | Final | 12/1/2016 | 11/30/2021 |
| Gouldings Lodge RGJ, Inc. |
Monument Valley, UT | NN0025178 | Final | 5/1/2015 | 4/30/2020 |
| Navajo Coal Mine Navajo Transitional Energy Company/Bisti Fuels Company, LLC – Navajo Mine |
San Juan County, NM | NN0028193 | Final | 5/1/2018 | 4/30/2023 |
| McKinley Mine Chevron Mining, Inc. |
Gallup, NM | NN0029386 | Final | 7/1/2017 | 6/30/2022 |
| Lukachukai Community School WWTF U.S. Bureau of Indian Affairs |
Lukachukai, AZ | NN0030339 | Final | 5/1/2016 | 4/30/2021 |
| Pine Hill WWTF Ramah Navajo School Board, Inc. |
Pine Hill, NM | NN0030325 | Final | 1/1/2016 | 12/31/2020 |
| Jeehdeez'a Academy Inc. WWTP U.S. Bureau of Indian Affairs |
Low Mountain, AZ | NN0030337 | Final | 5/1/2016 | 4/30/2021 |
| Northern Edge Navajo Casino Navajo Tribal Utility Authority |
Upper Fruitland, NM | NN0030343 | Final | 6/1/2017 | 5/31/2022 |
| Old Torreon Day School U.S. Bureau of Indian Affairs |
Torreon, NM | NN0030341 | Final | 10/1/2014 | 9/30/2019 |
| Twin Arrows Navajo Casino and Resort WWTF Navajo Tribal Utility Authority (NTUA) |
Fort Defiance, AZ | NN0030344 | Final | 5/1/2018 | 4/30/2023 |
| Navajo Nation Municipal Pipeline Project Navajo Engineering and Construction Authority (NECA) |
Shiprock, NM | NN0030345 | Final | 4/1/2014 | 3/31/2019 |
| Mariano Lake Waterline Project Mariano Lake Chapter Water System |
Mariano Lake Chapter, NM | NN0030346 | Final | 6/1/2015 | 5/31/2020 |
| Hunter's Point Boarding School U.S. Bureau of Indian Affairs |
Hunter's Point, AZ | NN0110167 | Final | 11/1/2014 | 10/31/2019 |
| Seba Dalkai Boarding School U.S. Bureau of Indian Affairs |
Navajo County, AZ | NN0110183 | Final | 11/1/2014 | 10/31/2019 |
| Speedy’s Truck Stop Speedy’s Convenience, Inc. |
Lupton, AZ | NN0031001 | Final | 9/1/2017 | 8/31/2022 |
| General Permit for Low Threat Discharge on Navajo Nation | Navajo Nation | NNG990001 | Final | 5/1/2018 | 4/30/2023 |