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National Pollutant Discharge Elimination System (NPDES)

Combined Sewer Overflows in the Great Lakes Basin-Ohio

There are 152 NPDES permits which authorize discharges from combined sewer overflows (CSOs) to the Great Lakes Basin. Select the state in the right-side box for the list of CSO permits in the Great Lakes Basin in that state.

There are 42 NPDES permits for CSO discharges in the Great Lakes Basin in Ohio. The table below provides information about those permittees and, where available, links to their CSO website and Annual Notice describing the CSO discharges that occurred in 2018.

Map of CSO communities in Ohio that drain to the Great Lakes Basin

The following links exit the site Exit

Municipal Operator of CSO NPDES Permit Number Great Lake Discharged To Water Body Directly Discharged Into Website Annual CSO Report
Akron OH0023833 Lake Erie Cuyahoga River Akron website Akron annual notice
(44 pp, 1.6 MB, About PDF)
Avon Lake OH0023981 Lake Erie Lake Erie Avon Lake website Avon Lake annual notice
(2 pp, 143 K, About PDF)
Bowling Green OH0024139 Lake Erie Poe Ditch Bowling Green website  
Bucyrus OH0052922 Lake Erie Sandusky River Bucyrus website Bucyrus annual notice
(10 pp, 3.2 MB, About PDF)
Clyde OH0024868 Lake Erie Raccoon Creek Clyde website Clyde annual notice
Columbus Grove OH0024759 Lake Erie Plum Creek    
Defiance OH0024889 Lake Erie Maumee River Defiance website Definance annual notice
Delphos OH0024929 Lake Erie Jennings Creek Delphos website Delphos annual notice
(15 pp, 574 K, About PDF)
Delta OH0020974 Lake Erie Bad Creek Delta website Delta annual notice
Deshler OH0022471 Lake Erie Brush Creek    
Elyria OH0025003 Lake Erie Black River Elyria website Elyria annual notice
(24 pp, 1.1 MB, About PDF)
Euclid OH0031062 Lake Erie Lake Erie Euclid website Euclid annual notice
(17 pp, 8.9 MB, About PDF)
Fayette OH0025127 Lake Erie Unnamed tributary to Deer Creek    
Findlay OH0025135 Lake Erie Blanchard River Findlay website Findlay annual notice
Forest OH0025151 Lake Erie Forest Simpson Ditch to Blanchard River    
Fostoria OH0052744 Lake Erie Portage River, East Branch Fostoria website Fostoria annual notice
(11 pp, 322 K, About PDF)
Fremont OH0025291 Lake Erie Sandusky River Fremont website Fremont annual notice
(9 pp, 904 K, About PDF)
Gibsonburg OH0029122 Lake Erie Hurlbut & SR 300 Ditch (to Portage River) Gibsonburg website Gibsonburg annual notice
(7 pp, 1.9 MB, About PDF)
Greenwich OH0020486 Lake Erie SW Branch of Vermillion River Greenwich website  
Hicksville OH0025771 Lake Erie Mill Creek Hicksville website Hicksville annual notice
(4 pp, 162 K, About PDF)
Lakewood OH0026018 Lake Erie Lake Erie Lakewood website Lakewood annual notice
(8 pp, 741 K, About PDF)
Lima OH0026069 Lake Erie Ottawa River Lima website Lima annual notice
(15 pp, 1.4 MB, About PDF)
Monroeville OH0020095 Lake Erie West Branch Huron River Monroeville website Monroeville annual notice
(3 pp, 132 K, About PDF)
Montpelier OH0021831 Lake Erie St. Joseph River Montpelier website Montpelier annual notice
(1 pg, 138 K, About PDF)
Napoleon OH0020893 Lake Erie Maumee River Napoleon website Napoleon annual notice
(8 pp, 2.7 MB, About PDF)
NEOSRD OH0043991 Lake Erie Lake Erie NEOSRD website NEOSRD annual notice
(43 pp, 886 K, About PDF)
North Baltimore OH0020117 Lake Erie Rocky Ford Creek North Baltimore website

North Baltimore annual notice

Norwalk OH0052604 Lake Erie Rattlesnake Creek Norwalk website  
Oak Harbor OH0026841 Lake Erie Portage River Oak Harbor website Oak Harbor annual notice
(1 pg, 49 K, About PDF)
Paulding OH0020338 Lake Erie Flat Rock Creek Paulding website Paulding annual notice
Payne OH0021326 Lake Erie Flat Rock Creek Payne website Payne annual notice
Perrysburg OH0021008 Lake Erie Maumee River Perrysburg website Perrysburg annual notice
( 3 pp, 820 K, About PDF)
Port Clinton OH0052876 Lake Erie Portage River Port Clinton website Port Clinton annual notice
(4 pp, 443 K, About PDF)
Sandusky OH0027332 Lake Erie Sandusky Bay Sandusky website Sandusky annual notice
(9 pp, 203 K, About PDF)
Swanton OH0020524 Lake Erie Al Creek Swanton website Swanton annual notice
(1 pg, 206 K, About PDF)
Tiffin OH0052949 Lake Erie Sandusky River Tiffin website Tiffin annual notice
Toledo OH0027740 Lake Erie Maumee River Toledo website  
Upper Sandusky OH0020001 Lake Erie Sandusky River Upper Sandusky website Upper Sandusky annual notice
(16 pp, 114 K, About PDF)
Van Wert OH0027910 Lake Erie Town Creek

Van Wert website

Wapakoneta OH0027952 Lake Erie Auglaize River Wapakoneta website Wapakoneta annual notice
(4 pp, 76 K, About PDF)
Wauseon OH0023400 Lake Erie North Turkeyfoot Creek Wauseon website Wauseon annual notice
Willard OH0028118 Lake Erie Jacobs Creek Willard website Willard annual notice
(3 pp, 1.3 MB, About PDF)

View the Ohio Environmental Protection Agency's online interactive map of CSO outfall locations and permit information. 

The Ohio Environmental Protection Agency's website has more information about the Ohio CSO Control Program.

EPA’s Enforcement and Compliance History Online (ECHO) database has additional information on NPDES discharges, including CSO discharges for some facilities.

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