Sycamore STP - North Plant
Sycamore, IL · Dekalb County · Publicly Owned Treatment Works
- Average flow
- 2.26 MGD
- Design flow
- —
- NPDES permit
- ILL031291
- Effective
- Permit expires
- December 2030
- Population served
- 18,317
- CWNS 2022
Sycamore STP - North Plant is a publicly owned wastewater treatment works in Sycamore, Dekalb County, Illinois treating an average of 2.26 million gallons per day, serving about 18,317 residents. Treatment on site includes clarifiers. It discharges under NPDES permit ILL031291 (effective), which expires in December 2030, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Sycamore STP - North Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Sycamore STP - North Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Cortland, Township Of · 6 mi away
—
Genoa · 7 mi away
0.45 MGD
Maple Park · 7 mi away
0.11 MGD
Kirkland · 10 mi away
0.14 MGD
Elburn · 13 mi away
0.71 MGD
Pingree Grove · 15 mi away
0.66 MGD
Hinckley · 16 mi away
0.17 MGD
Huntley · 17 mi away
0.69 MGD
Sycamore STP - North Plant: 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 May 18, 2025.