State Standards in Effect for CWA Purposes
- [See Nutrient Criteria ]
(Effective December 22, 2003) Emergency rulemaking 1200-4-3-.03(3)(k) establishing a nutrient criterion applicable to all waters of the state.
- [See Chapter 1200-4-3 General Water Quality Criteria ]
(Effective March 27, 2008) State regulation establishing water quality standards for surface waters of the State.
- [See Chapter 1200-4-4 Use Classifications for Surface Waters ]
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.
- Nutrient Criteria (PDF)(3 pp, 138 K)
- Chapter 1200-4-3 General Water Quality Criteria (PDF)(33 pp, 236 K)
- Chapter 1200-4-4 Use Classifications for Surface Waters (PDF)(34 pp, 171 K)