Cortland Stp, Town Of
Cortland, Township Of, IL · Dekalb County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 2.55 MGD
- NPDES permit
- IL0079065
- Effective
- Permit expires
- March 2031
- Population served
- —
- CWNS 2022
Cortland Stp, Town Of is a publicly owned wastewater treatment works in Cortland, Township Of, Dekalb County, Illinois. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit IL0079065 (effective), which expires in March 2031, with 51 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
- 51
- Effluent violations
- 51
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Cortland Stp, Town Of.
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Nearby wastewater treatment plants in Illinois
Maple Park · 3 mi away
0.11 MGD
Sycamore · 6 mi away
2.26 MGD
Elburn · 10 mi away
0.71 MGD
Hinckley · 11 mi away
0.17 MGD
Big Rock · 12 mi away
0.02 MGD
Genoa · 12 mi away
0.45 MGD
Shabbona · 15 mi away
0.03 MGD
Kirkland · 15 mi away
0.14 MGD
Cortland Stp, Town Of: 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 January 23, 2025.