State Standards in Effect for CWA Purposes
- [See Regulation Establishing Water Quality Standards for Surface Waters of the State of Arkansas (PDF)]
(Effective October 31, 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 Act purposes. See cover pages for more information.
Federally Proposed or Promulgated Standards
- Withdrawal of Certain Federal Water Quality Criteria Applicable to Alaska, Arkansas, and Puerto Rico (October 29, 2004)