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Combined Sewer Overflows in the Great Lakes Basin-Indiana

<< CSO Homepage  <  CSOs in the Great Lakes Basin

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There are 22 NPDES permits for CSO discharges in the Great Lakes Basin in Indiana. 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 2023.

The following links exit the site

Municipal Operator of CSO NPDES Permit Number Great Lake Discharged To Water Body Directly Discharged Into Website Annual CSO Notice
Auburn IN0020672 Lake Erie Cedar Creek Auburn website Auburn annual public notice
Berne IN0021369 Lake Erie Habegger Ditch, Spruger Ditch Berne website Berne annual public notice (pdf) (8.55 MB)
Butler IN0022462 Lake Erie Big Run Butler website Butler annual report (pdf) (8.27 KB)
Chesterton IN0022578 Lake Michigan East Arm Little Calument River    
Crown Point IN0025763 Lake Michigan Main Beaver Dam Ditch Crown Point website  
East Chicago IN0022829 Lake Michigan Indiana Harbor Canal, Grand Calumet River East Chicago website  
Elkhart IN0025674 Lake Michigan Elkhart River, St. Joseph River, Christina Creek Elkhart website Elkhart annual notification (pdf) (337.23 KB)
Fort Wayne IN0032191 Lake Erie Maumee River, St. Mary's River, Spy Run Creek, St. Joseph River, UNT Fort Wayne website Fort Wayne annual notification
Gary IN0022977 Lake Michigan Grand Calumet River, Little Calumet River Gary website  
Goshen IN0025755 Lake Michigan Elkhart River Goshen website  
Hammond IN0023060 Lake Michigan Grand Calumet River, East Arm Little Calumet River Hammond website Hammond annual notification
Kendallville IN0020656 Lake Michigan UNT Henderson Lake Kendallville website  
LaPorte Municipal IN0025577 Lake Michigan Travis Ditch LaPorte website LaPorte annual report
Lowell IN0023621 Lake Erie Cedar Creek Lowell website  
Michigan City IN0023752 Lake Michigan Trail Creek Michigan City website  
Mishawaka IN0025640 Lake Michigan St. Joseph River, Eller Ditch Mishawaka website Mishawaka annual notification
Nappanee IN0021466 Lake Michigan Berlin Court Ditch, Armey Ditch Nappanee website Nappanee annual notice (pdf) (29.02 MB)
New Haven INM020346 Lake Michigan Maumee R via Martin Drain and Trier D New Haven website  
South Bend IN0024520 Lake Michigan St. Joseph River South Bend website South Bend annual notification and annual report
Valparaiso IN0024660 Lake Michigan Salt Creek Valparaiso website Valparaiso annual notification (pdf) (96.92 KB)
Wakarusa IN0024775 Lake Michigan Werntz Ditch Town of Wakarusa Wakarusa annual notification and annual report
Waterloo IN0020711 Lake Erie Cedar Creek Waterloo website Waterloo annual notification

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

National Pollutant Discharge Elimination System (NPDES)

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Last updated on May 27, 2025
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