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Water: State, Tribal & Territorial Standards

Repository of Documents: Ohio

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3745-1-01. Purpose and Applicability (PDF) (2 pp, 17K)
(Effective December 30, 2002)
3745-1-02. Definitions (PDF) (13 pp, 94K)
(Effective December 30, 2002)
3745-1-03. Analytical Methods and Availability of Documents (PDF) (4pp, 24K)
(Effective October 5, 2007)
3745-1-04. Criteria Applicable to All Waters (PDF) (2 pp, 5K)
(Effective October 15, 1998)
3745-1-05. Antidegradation (PDF) (38 pp, 124K)
(Effective March 1, 2011)
3745-1-06. Mixing Zones (PDF) (1 pg, 4K)
(Effective October 31, 1997)
3745-1-07. Water Use Designations and Statewide Criteria (PDF) (36 pp, 85K)
(Effective March 15, 2010)
The following documents contain water quality standards specific to the watershed or drainage basin identified.
3745-1-08. Hocking River (PDF) (16 pp, 256K)
(Effective December 23, 2008)
3745-1-09. Scioto River Drainage Basin (PDF) (42 pp, 145K)
(Effective February 2, 2010)
3745-1-10. Grand River (PDF) (5 pp, 92K)
(Effective October 6, 2011)
3745-1-11. Maumee River Drainage Basin (PDF) (23 pp, 79K)
(Effective February 9, 2010)
3745-1-12. Sandusky River (PDF) (8 pp, 104K)
(Effective October 6, 2011)
3745-1-13. Central Ohio Tributaries  Drainage Basin (PDF) (24 pp, 246K)
(Effective July 21, 2002)
3745-1-14. Ashtabula River (PDF) (5 pp, 155K)
(Effective July 18, 2002)
3745-1-15. Little Beaver Creek (PDF) (6 pp, 183K)
(Effective July 18, 2002)
3745-1-16. Southeast Ohio Tributaries (PDF) (23 pp, 316K)
(Effective July 18, 2002)
3745-1-17. Southwest Ohio Tributaries (PDF) (18 pp, 62K)
(Effective February 9, 2010)
3745-1-18. Little Miami River (PDF) (12 pp, 43K)
(Effective February 9, 2010)
3745-1-19. Huron River (PDF) (11 pp, 195K)
(Effective October 6, 2011)
3745-1-20. Rocky River (PDF) (5 pp, 119K)
(Effective December 23, 2008)
3745-1-21. Great Miami River (PDF) (6 pp, 70K)
(Effective October 6, 2011)
3745-1-22. Chagrin River (PDF) (6 pp, 94K)
(Effective December 23, 2008)
3745-1-23. Portage River (PDF) (24 pp, 205K)
(Effective October 6, 2011)
3745-1-24. Muskingum River (PDF) (6 pp, 88K)
(Effective October 6, 2011)
3745-1-25. Mahoning River (PDF) (51 pp, 372K)
(Effective October 6, 2011)
3745-1-26. Cuyahoga River (PDF) (12 pp, 304K)
(Effective July 18, 2002)
3745-1-27. Black River (PDF) (5 pp, 100K)
(Effective December 23, 2008)
3745-1-28. Vermilion River (PDF) (4 pp, 149K)
(Effective February 23, 2001)
3745-1-29. Wabash River (PDF) (5 pp, 158K)
(Effective July 18, 2002)
3745-1-30. Mill Creek (PDF) (10 pp, 108K)
(Effective October 6, 2011)
3745-1-31. Lake Erie Standards (PDF) (3 pp, 6K)
(Effective October 31, 1997)
3745-1-32. Ohio River Standards (PDF) (8 pp, 81K)
(Effective December 24, 2002)
3745-1-33. Water Quality Criteria for the Lake Erie Drainage Basin (PDF) (4 pp, 35K)
(Effective December 24, 2002)
3745-1-34. Water Quality Criteria for the Ohio River Drainage Basin (PDF) (6 pp, 59K)
(Effective December 24, 2002)
3745-1-35. Site-specific modifications to criteria and value (PDF) (5 pp, 33K)
(Effective December 24, 2002)
3745-1-36. Methodologies for Development of Aquatic Life Criteria and Value for the Lake Erie Drainage Basin (PDF) (10 pp, 49K)
(Effective February 22, 2002)
3745-1-37. Methodology for Deriving Bioaccumulation Factors (PDF) (16 pp, 33K)
(Effective October 31, 1997)
3745-1-38. Methodologies for Development of Human Health Criteria and Values for the Lake Erie Drainage Basin (PDF) (12 pp, 53K)
(Effective October 5, 2007)
3745-1-39. Methodology for the Development of Wildlife Criteria for the Lake Erie Drainage Basin (PDF) (8 pp, 53K)
(Effective October 5, 2007)
3745-1-40. Methodologies for Development of Aquatic Life Criteria for the Ohio River Drainage Basin (PDF) (6 pp, 15K)
(Effective October 31, 1997)
3745-1-50. Wetland Definitions (PDF) (6 pp, 15K)
(Effective May 1, 1998)
3745-1-51. Wetland Narrative Criteria (PDF) (2 pp, 7K)
(Effective May 1, 1998)
3745-1-52. Numeric Chemical Criteria for Waste Water Discharges to Wetlands (PDF) (1 pg, 5K)
(Effective May 1, 1998)
3745-1-53. Wetland Use Designation (PDF) (1 pg, 5K)
(Effective May 1, 1998)
3745-1-54. Wetland Antidegradation (PDF) (18 pp, 437K)
(Effective May 1, 1998)

Note: These regulations contain additional provisions related to the development of National Pollutant Discharge Elimination System permits that may be outside the scope of the federal water quality standards regulations. However, the regulations are included here as supplementary information.
3745-2-02. Definition (PDF) (11 pp, 71K)
(Effective December 24, 2002)
3745-2-04 Determinations Preliminary to Development of Water Quality-Based Effluent Limitations (PDF) (12 pp, 46K)
(Effective June 7, 2011)
3745-2-05. Calculating Wasteload Allocations (PDF) (6 pp, 46K)
(Effective December 24, 2002)
3745-2-06 Application of Preliminary Effluent Limitations (PDF) (10 pp, 19K)
(Effective October 31, 1997)
3745-2-07. Additive Effects of Pollutants (PDF) (3 pp, 34K)
(Effective December 24, 2002)
3745-2-08. Mixing Zone Demonstration and Sizing Requirements (PDF) (10 pp, 58K)
(Effective December 24, 2002)
3745-2-09. Whole Effluent Toxicity Provisions and Water Quality Based Effluent Limit Calculation Procedures (PDF) (4 pp, 36K)
(Effective December 24, 2002)
3745-2-12. Total Maximum Daily Loads (PDF) (5 pp, 27K)
(Effective June 7, 2011)
3745-33-07. Establishing Permit Conditions (PDF) (18 pp, 104K)
(Effective December 24, 2002)
Note: EPA disapproved provisions at OAC 3745-33-07(B) for determining reasonable potential for a discharge to cause or contribute to an exceedance of Ohio's whole effluent toxicity requirements. Pursuant to the Great Lakes Guidance contained at 40 CFR 132, these provisions are replaced by federal provisions contained at 40 CFR 132, Appendix F, Procedure 6, Section C, paragraph 1 and Section D.

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