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
Draft Permits
| Facility/Discharger | Location | Permit Number | Permit Status |
|---|---|---|---|
| Black Mesa Complex Peabody Western Coal Company |
Kayenta, AZ | NN0022179 | Public comment through December 28, 2020 |
Final Permits
If the “+” (plus) icon is visible in the table, click for more information.
| Facility / Discharger | Location | Permit Number | Permit Status | Effective Date | Expiration Date |
|---|---|---|---|---|---|
| APS Four Corners Power Plant Arizona Public Service Company |
San Juan County, NM | NN0000019 | Final | 2020/12/01 | 2025/11/30 |
| English Lease Boundary Butte Nacogdoches Oil & Gas Inc. |
San Juan County, UT | NN0020133 | Final | 2017/04/01 | 2022/03/31 |
| Chinle WWTF Navajo Tribal Utility Authority (NTUA) |
Chinle, AZ | NN0020265 | Final | 2018/09/01 | 2023/08/31 |
| Kayenta WWTF Navajo Tribal Utility Authority (NTUA) |
Kayenta, AZ | NN0020281 | Final | 2018/08/01 | 2023/07/31 |
| Tuba City WWTF Navajo Tribal Utility Authority (NTUA) |
Tuba City, AZ | NN0020290 | Final | 2016/06/01 | 2021/05/31 |
| Shiprock WWTF Navajo Tribal Utility Authority (NTUA) |
Shiprock, NM | NN0020621 | Final | 2018/03/01 | 2023/02/28 |
| Nenahnezad Community School U.S. Bureau of Indian Affairs |
Fruitland, NM | NN0020800 | Final | 2019/11/01 | 2024/10/31 |
| Wingate High School U.S. Bureau of Indian Affairs |
Fort Wingate, NM | NN0020958 | Final | 2016/02/01 | 2021/01/31 |
| Window Rock WWTF Navajo Tribal Utility Authority (NTUA) |
Fort Defiance, AZ | NN0021555 | Final | 2016/02/01 | 2021/01/31 |
| Cameron Trading WWTF Cameron Trading Post |
Cameron, AZ | NN0021610 | Final | 2017/09/01 | 2022/08/31 |
| Black Mesa Complex Peabody Western Coal Company |
Kayenta, AZ | NN0022179 | Final | 2010/11/01 | 2015/10/31 |
| Ganado WWTF Navajo Tribal Utility Authority (NTUA) |
Apache County, AZ | NN0022195 | Final | 2016/02/01 | 2021/01/31 |
| Pinon WWTF Navajo Tribal Utility Authority (NTUA) |
Pinon, AZ | NN0024228 | Final | 2016/12/01 | 2021/11/30 |
| Gouldings Lodge RGJ, Inc. |
Monument Valley, UT | NN0025178 | Final | 2021/05/01 | 2026/04/30 |
| Navajo Coal Mine Navajo Transitional Energy Company/Bisti Fuels Company, LLC – Navajo Mine |
San Juan County, NM | NN0028193 | Final | 2018/05/01 | 2023/04/30 |
| McKinley Mine Chevron Mining, Inc. |
Gallup, NM | NN0029386 | Final | 2017/07/01 | 2022/06/30 |
| Lukachukai Community School WWTF U.S. Bureau of Indian Affairs |
Lukachukai, AZ | NN0030339 | Final | 2016/05/01 | 2021/04/30 |
| Pine Hill WWTF Ramah Navajo School Board, Inc. |
Pine Hill, NM | NN0030325 | Final | 2016/01/01 | 2020/12/31 |
| Jeehdeez'a Academy Inc. WWTP U.S. Bureau of Indian Affairs |
Low Mountain, AZ | NN0030337 | Final | 2016/05/01 | 2021/04/30 |
| Northern Edge Navajo Casino Navajo Tribal Utility Authority |
Upper Fruitland, NM | NN0030343 | Final | 2017/06/01 | 2022/05/31 |
| Twin Arrows Navajo Casino and Resort WWTF Navajo Tribal Utility Authority (NTUA) |
Fort Defiance, AZ | NN0030344 | Final | 2018/05/01 | 2023/04/30 |
| Navajo Nation Municipal Pipeline Project Navajo Engineering and Construction Authority (NECA) |
Shiprock, NM | NN0030345 | Final | 2019/09/01 | 2024/08/31 |
| General Permit for Low Threat Discharge on Navajo Nation | Navajo Nation | NNG990001 | Final | 2018/05/01 | 2023/04/30 |