State Standards in Effect for CWA Purposes
- [See Oklahoma's Water Quality Standards (Chapter 45) ]
(Effective May 10, 2016) State regulation establishing water quality standards for surface waters of the State. Please note that not all parts of this document are effective for Clean Water Action purposes. See cover page for more detail.
- [See Implementation of Oklahoma's Water Quality Standards (Chapter 46) ]
(State Effective Date of July 1, 2013) State regulation providing water quality standards implementation procedures.
Federally Proposed or Promulgated Standards
None at this time.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.