On this page:
State Standards in Effect for CWA Purposes
- [See Chapter 335-6-1: General Provisions (PDF)]
(Effective May 26, 2010) - [See Chapter 335-6-10: Water Quality Criteria (PDF)]
(Effective January 23, 2015) - [See Chapter 335-6-11: Water Use Classifications for Interstate and Intrastate Waters (PDF)]
(Effective January 23, 2015)
Federally Proposed or Promulgated Standards
None at this time.
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