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.
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 | |
| 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 | ||
| 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.