Corunna WWTP
W Depot St Extended, Corunna, IN 46730 · De Kalb County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.02 MGD
- NPDES permit
- IN0047473
- Effective
- Permit expires
- January 2029
- Population served
- 227
- CWNS 2022
Corunna WWTP is a publicly owned wastewater treatment works in Corunna, De Kalb County, Indiana, serving about 227 residents. It discharges under NPDES permit IN0047473 (effective), which expires in January 2029, with 10 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Corunna WWTP.
Available with a free Klarifi account
See the full treatment train at Corunna WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 10
- Effluent violations
- 9
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Corunna WWTP.
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Nearby wastewater treatment plants in Indiana
Kendallville · 6 mi away
6.42 MGD
Avilla · 7 mi away
0.3 MGD
Garrett · 7 mi away
0.75 MGD
Ashley · 8 mi away
0.16 MGD
Laotto · 11 mi away
0.14 MGD
Wolcottville · 12 mi away
0.09 MGD
Lagrange · 12 mi away
0.15 MGD
Wolcottville · 13 mi away
0.15 MGD
Corunna 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 October 26, 2026; facility record last updated November 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms