Authority to Administer Standards Program
This tribe was granted treatment in a manner similar to a state (TAS) on April 23, 2008.
Tribe Standards in Effect for CWA Purposes
The tribe’s initial water quality standards were approved on July 8, 2008.
- [See Hopi Tribe Water Quality Standards ]
(Effective on August 24, 2011)
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.
- Hopi Tribe Water Quality Standards (PDF)(45 pp, 690 K)