An official website of the United States government.

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

Draft NPDES Permits Pending on Navajo Nation Tribal Lands

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

Plus (+) Icon If the “+” (plus) icon is visible in the table, click for more information.

 

NPDES Permits Issued by EPA on Navajo Nation Tribal Lands

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

Top of Page