EPA Approvals of Tribal Water Quality Standards

The following chart lists EPA approvals for tribes to administer a water quality standards (WQS) program, and EPA’s approvals of those tribes’ WQS. A tribe may administer a WQS program if it applies and EPA finds that it qualifies under Section 518(e) of the Clean Water Act to be treated in a manner similar to a state (“TAS”). Currently, 53 tribes have been found eligible to administer a WQS program, and EPA has approved at least initial WQS for 42 of these tribes. EPA has promulgated federal WQS for 1 tribe not included in these totals.

EPA Approvals of Tribal Water Quality Standards Program
Tribe	EPA Region	EPA Contact	Date Found Eligible to Administer a WQS Program (TAS) [yyyy-mm-dd]	Date Initial WQS Approved by EPA [yyyy-mm-dd]
Assiniboine and Sioux Tribes of the Fort Peck Indian Reservation (MT)	8	George Parrish	1996-08-29	2000-04-25
Bad River Band of Lake Superior Chippewa (WI)	5	Kathleen Mayo, David Pfeifer	2009-06-26	2011-09-21
Big Pine Band of Owens Valley (CA)	9	Terry Fleming	2005-10-24	2006-01-18
Blackfeet Tribe (MT)	8	George Parrish	2012-05-02
Citizen Potawatomi Nation (OK)	6	Diane Evans	Pending Review
Coeur D’Alene Tribe (ID)	10	Maja Tritt	2005-08-05	2014-06-12
Confederated Salish and Kootenai Tribes of the Flathead Reservation (MT)	8	George Parrish	1995-03-01	1996-03-18
Confederated Tribes of the Chehalis Reservation (WA)	10	Maja Tritt	1995-03-07	1997-02-03
Confederated Tribes of the Colville Reservation (WA)	10	Maja Tritt	Not applicable	1989-07-06 (promulgation)
Confederated Tribes of the Warm Springs Reservation (OR)	10	Maja Tritt	1999-05-25	2001-09-28
Confederated Tribes of Umatilla (OR)	10	Maja Tritt	2001-04-30	2001-10-18
Cortina Band of Wintun Indians (CA)	9	Terry Fleming	2016-04-07
Dry Creek Rancheria Band of Pomo Indians (CA)	9	Terry Fleming	2011-10-17
Eastern Band of Cherokee Indians (NC)	4	Eve Zimmerman	2015-01-26
Fond du Lac Band of Chippewa (MN)	5	Kathleen Mayo, David Pfeifer	1996-05-16	2001-12-27
Grand Portage Band of Chippewa (MN)	5	Kathleen Mayo, David Pfeifer	1996-07-16	2005-11-02
Havasupai Tribe (AZ)	9	Terry Fleming	2011-04-26
Hoopa Valley Tribe	9	Terry Fleming	1996-05-17	2002-09-11
Hopi Tribe (AZ)	9	Terry Fleming	2008-04-23	2008-07-08
Hualapai Indian Tribe (AZ)	9	Terry Fleming	2004-07-22	2004-09-17
Kalispel Indian Community (WA)	10	Maja Tritt	2002-11-04	2004-06-24
Lac du Flambeau Band of Chippewa (WI)	5	Kathleen Mayo, David Pfeifer	2008-04-08	2010-09-17
Lummi Tribe (WA)	10	Maja Tritt	2007-03-05	2008-09-30
Makah Indian Nation (WA)	10	Maja Tritt	2003-12-23	2006-09-29
Miccosukee Tribe (FL)	4	Eve Zimmerman	1994-12-20	1999-05-25 2001-03-15 (Miccosukee Reserve Area)
Mole Lake Band of the Lake Superior Tribe of Chippewa Indians, Sokaogon Chippewa Community (WI)	5	Kathleen Mayo, David Pfeifer	1995-09-29	1996-01-22
Navajo Nation (AZ, NM, UT)	9	Terry Fleming	2006-01-20	2006-04-11
Northern Cheyenne (MT)	8	George Parrish	2006-08-11	2013-03-21
Ohkay Owingeh (NM) (formerly the Pueblo of San Juan)	6	Diane Evans	1993-05-12	1993-09-16
Paiute-Shoshone Indians of the Bishop Community (CA)	9	Terry Fleming	2006-04-11	2008-08-15
Pala Band of Mission Indians (CA)	9	Terry Fleming	2016-04-19
Pawnee Nation (OK)	6	Diane Evans	2004-11-04
Port Gamble S’Klallam (WA)	10	Maja Tritt	2003-09-24	2005-09-27
Pueblo of Acoma (NM)	6	Diane Evans	2001-04-17	2001-04-17
Pueblo of Isleta (NM)	6	Diane Evans	1992-10-13	1992-12-24
Pueblo of Laguna (NM)	6	Diane Evans	2016-12-20
Pueblo of Nambe (NM)	6	Diane Evans	1995-08-18	1995-08-18
Pueblo of Picuris (NM)	6	Diane Evans	1995-08-07	1995-08-07
Pueblo of Pojoaque (NM)	6	Diane Evans	1996-03-21	1996-03-21
Pueblo of Sandia (NM)	6	Diane Evans	1992-12-24	1993-08-10
Pueblo of Santa Ana (NM)	6	Diane Evans	2015-07-20	2015-08-31
Pueblo of Santa Clara (NM)	6	Diane Evans	1995-07-19	1995-07-19
Pueblo of Taos (NM)	6	Diane Evans	2005-12-08	2006-06-19
Pueblo of Tesuque (NM)	6	Diane Evans	1997-04-29	1997-04-29
Puyallup Tribe of Indians (WA)	10	Maja Tritt	1994-05-25	1994-10-31
Pyramid Lake Paiute (NV)	9	Terry Fleming	2007-01-30	2008-12-19
Saint Regis Mohawk Tribe (NY)	2	Wayne Jackson	2002-10-16	2007-09-14
Seminole Tribe (FL)	4	Eve Zimmerman	1994-06-01	1997-09-26 (Big Cypress Reservation) 1998-11-18 (Brighton Reservation)
Shoshone-Bannock Tribes (ID)	10	Maja Tritt	2008-09-05
Spokane Tribe of Indians (WA)	10	Maja Tritt	2002-07-23	2003-04-22
Swinomish Indian Tribal Community (WA)	10	Maja Tritt	2008-04-18
Tulalip Tribes (WA)	10	Maja Tritt	1996-05-09
Twenty-Nine Palms (CA)	9	Terry Fleming	2006-10-26	2015-08-20
Ute Mountain Ute (CO)	8	George Parrish	2005-09-26	2011-10-19
Walker River Paiute Tribe (NV)	9	Terry Fleming	2016-02-29
White Mountain Apache Tribe (AZ)	9	Terry Fleming	1997-02-03	2001-09-27

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