Corydon WWTP
Corydon, IN · Harrison County · Publicly Owned Treatment Works
- Average flow
- 0.29 MGD
- Design flow
- 1.46 MGD
- NPDES permit
- IN0020893
- Effective
- Permit expires
- June 2028
- Population served
- 3,162
- CWNS 2022
Corydon WWTP is a publicly owned wastewater treatment works in Corydon, Harrison County, Indiana treating an average of 0.29 million gallons per day against a permitted design capacity of 1.46 MGD, serving about 3,162 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches, biogas silos. It discharges under NPDES permit IN0020893 (effective), which expires in June 2028, with 23 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 23
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Corydon WWTP.
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Nearby wastewater treatment plants in Indiana
Lanesville · 7 mi away
0.03 MGD
Georgetown · 10 mi away
0.27 MGD
Depauw · 11 mi away
0.02 MGD
Leavenworth · 12 mi away
0.06 MGD
Laconia · 13 mi away
0.001 MGD
Palmyra · 14 mi away
0.08 MGD
Galena · 14 mi away
0.05 MGD
Marengo · 16 mi away
0.03 MGD
Corydon WWTP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated August 19, 2026.