Sullivan STP
Sullivan, IL · Moultrie County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 1 MGD
- NPDES permit
- IL0021806
- Effective
- Permit expires
- February 2027
- Population served
- 4,371
- CWNS 2022
Sullivan STP is a publicly owned wastewater treatment works in Sullivan, Moultrie County, Illinois, serving about 4,371 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons. It discharges under NPDES permit IL0021806 (effective), which expires in February 2027, with 47 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
- 47
- Effluent violations
- 45
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Sullivan STP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Sullivan STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Bethany · 8 mi away
0.1 MGD
Lovington · 9 mi away
0.1 MGD
Windsor · 10 mi away
—
Findlay · 10 mi away
0.03 MGD
Arthur · 10 mi away
0.14 MGD
Hammond · 14 mi away
—
Humboldt · 15 mi away
0.03 MGD
Strasburg · 17 mi away
—
Sullivan 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 28, 2025.