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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
There are currently no draft permits.      

Final Permits
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 8/1/2018 7/31/2023
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

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