Water Quality Programs

The Division of Surface Water (DSW) includes several programs that support the Clean Water Act’s “fishable, swimmable” goals for all surface waters in Ohio. These programs assess the quality of the surface waters, set standards for protection of the waters and establish plans to bring impaired waters back into attainment with water quality goals. See the links to individual program pages on the right.

Documents Available for Comment

No documents available for comment at this time. 

Cuyahoga River Tributaries - Biological and Water Quality Survey Planning

Ohio EPA will be conducting a biological and water quality survey in the Cuyahoga River tributaries and ship channel this summer. Please see the final plan and and map below for additional information.  Additional information on the Cuyahoga River watershed can be found here.


Current Priority Projects — Available Documents

Items marked with a ⦿ are in progress and expected to be released soon. Those with an X are available for review by clicking on the link.

Project  Study
Biological and
Water Quality Report
Analysis Plan
Modeling Results
Black River Watershed         ⦿
St. Joseph River Watershed         ⦿
Tiffin River Watershed       ⦿  
Maumee River Mainstem       ⦿  
Mohican River Watershed         ⦿
Upper Scioto River Watershed         ⦿
Big Darby Creek Watershed   X      
Cuyahoga River Watershed Final Plan,
Lower Scioto River Watershed   FS, DR      
St. Marys River Watershed   X      
Lower Mahoning River Watershed   X      
Lower Muskingum River Tributaries Watershed     FS, LAP    
FS - Fact Sheet      DR - Draft Report      DA - Draft Appendices      LAP - Loading Analysis Plan   



Piekutowski, Marianne  Assessment and Modeling Manager (614) 644-2876
Rush, Audrey Water Quality Standards Manager (614) 644-2035

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