Jacksonville STP
Jacksonville, IL · Morgan County · Publicly Owned Treatment Works
- Average flow
- 2.16 MGD
- Design flow
- —
- NPDES permit
- ILL021661
- Effective
- Permit expires
- December 2030
- Population served
- 19,446
- CWNS 2022
Jacksonville STP is a publicly owned wastewater treatment works in Jacksonville, Morgan County, Illinois treating an average of 2.16 million gallons per day, serving about 19,446 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit ILL021661 (effective), which expires in December 2030, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Jacksonville STP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Jacksonville STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Woodson · 8 mi away
—
Arenzville · 11 mi away
—
Murrayville · 12 mi away
0.006 MGD
Virginia · 14 mi away
0.09 MGD
Ashland · 15 mi away
0.02 MGD
Bluffs · 17 mi away
0.03 MGD
New Berlin · 18 mi away
0.06 MGD
Waverly · 19 mi away
0.03 MGD
Jacksonville 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 May 2, 2025.