Water Quality Standards Regulations: Confederated Tribes of Coos, Lower Umpqua, and Siuslaw Indians

Presented are water quality standards in effect for Clean Water Act (CWA) purposes for this tribe.

The EPA is posting these standards as a convenience to users and has made a reasonable effort to assure their accuracy. For each document listed under "Tribal Standards in Effect for CWA Purposes", the EPA has made a reasonable effort to identify parts of the standards that are disapproved or are otherwise not in effect for CWA purposes. Additionally, please note the documents may also contain provisions that the EPA does not have the authority and duty to act on under the Clean Water Act because the provisions are not water quality standards.

• What is a New or Revised Water Quality Standard Under CWA 303(c)(3)? - Frequently Asked Questions (pdf) (108.04 KB)

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Authority to Administer Standards Program

This Tribe was granted treatment in a manner similar to a state (TAS) on May 4, 2021.

• Decision Document: Approval of the Confederated Tribes of Coos, Lower Umpqua, and Siuslaw Indians Application for Treatment in a Similar Manner as a State for Clean Water Act Sections 303(c) and 401 (pdf) (20.03 MB, May 4, 2021)

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Tribal Standards in Effect for CWA Purposes

• Confederated Tribes of the Coos, Lower Umpqua and Siuslaw Indians’ Water Quality Standards (pdf) (1.51 MB) (Effective September 30, 2024) Tribal regulations establishing water quality standards for surface waters of the Tribe. Please note that not all provisions are in effect for CWA purposes. Refer to cover page for more information.

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Federally Proposed or Promulgated Standards

• None at this time.