Galesburg Sanitary District STP
Galesburg, IL · Knox County · Publicly Owned Treatment Works
- Average flow
- 3.22 MGD
- Design flow
- —
- NPDES permit
- ILL023141
- Effective
- Permit expires
- December 2030
- Population served
- 30,052
- CWNS 2022
Galesburg Sanitary District STP is a publicly owned wastewater treatment works in Galesburg, Knox County, Illinois treating an average of 3.22 million gallons per day, serving about 30,052 residents. Treatment on site includes clarifiers, aerated lagoons, biogas silos. It discharges under NPDES permit ILL023141 (effective), which expires in December 2030, with 6 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
- 6
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Galesburg Sanitary District STP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Galesburg Sanitary District STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Knoxville · 7 mi away
—
Wataga · 9 mi away
0.005 MGD
Wataga · 10 mi away
0.05 MGD
Abingdon · 11 mi away
0.27 MGD
Alexis · 11 mi away
0.04 MGD
Monmouth · 11 mi away
—
Monmouth · 12 mi away
2.64 MGD
Oneida · 13 mi away
0.05 MGD
Galesburg Sanitary District STP: 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 March 29, 2025.