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  2. Water Quality Standards: Regulations and Resources

Water Quality Standards Regulations: La Posta Band of Diegueno Mission 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)

Authority to Administer Standards Program

This tribe was granted treatment in a manner similar to a state (TAS) on March 25, 2021.


Tribal Standards in Effect for CWA Purposes

  • None at this time.

Federally Proposed or Promulgated Standards

  • None at this time.

Water Quality Standards: Regulations and Resources

  • What are Water Quality Standards?
  • Federal WQS Requirements
  • Standards in Your Area
  • Federally Promulgated WQS for Specific States, Territories, and Tribes
  • Tribes and Water Quality Standards
    • EPA Actions on Tribal WQS and Contacts
  • WQS Handbook
  • Reference Library of WQS Policy and Guidance Documents
  • WQS Academy
Contact Us: Standards for Water Body Health - Regulations and Resources
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on August 6, 2024
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