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EPA's Region 6 Office

Serving: Arkansas, Louisiana, New Mexico, Oklahoma, Texas, and 66 Tribal Nations

Tribal Water Quality Standards Programs

Map of EPA Region 6 Arkansas Louisiana New Mexico Oklahoma Texas

Arkansas
Louisiana
New Mexico
Oklahoma
Texas
Tribes

  National Information

Repository of Documents for Tribes

Region 6 Tribal Portal - Information and links to Tribal Environmental Offices

*Most of the documents provided below are in PDF. For more information and to download the free Acrobat Adobe Reader, go to EPA's PDF page.*

NEW Water Quality Standards Revisions:

Treatment in a manner similar to a state (TAS) for administering a
Water Quality Standards program:

NEW Applications Currently Under EPA Review

  • Pueblo of Santa Ana

    The public comment period is closed. Please contact Region 6 for more information.

Applications Approved By EPA

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