Authority to Administer Standards Program
This tribe was granted treatment in a manner similar to a state (TAS) on April 30, 2001.
Tribe Standards in Effect for CWA Purposes
The tribe’s initial water quality standards were approved on October 18, 2001.
- [See Confederate Tribes of the Umatilla Indian Reservation of Oregon Water Quality Standards ]
(Effective on February 11, 2010)
Federally Proposed or Promulgated Standards
At this time, there are no federally proposed or promulgated standards applicable to this tribe.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.