Stockton Stp, Village Of
Stockton, IL · Jo Daviess County · Publicly Owned Treatment Works
- Average flow
- 0.41 MGD
- Design flow
- 1.28 MGD
- NPDES permit
- IL0025267
- Effective
- Permit expires
- September 2030
- Population served
- 1,709
- CWNS 2022
Stockton Stp, Village Of is a publicly owned wastewater treatment works in Stockton, Jo Daviess County, Illinois treating an average of 0.41 million gallons per day against a permitted design capacity of 1.28 MGD, serving about 1,709 residents. Treatment on site includes uncovered lagoons, carrousels / oxidation ditches, biogas balloons. It discharges under NPDES permit IL0025267 (effective), which expires in September 2030, with 18 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
Unlock
Carrousels / oxidation ditches
Unlock
Biogas balloons
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 18
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Stockton Stp, Village Of.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in Illinois
Warren · 8 mi away
0.11 MGD
Lena · 9 mi away
0.18 MGD
Apple River · 10 mi away
0.07 MGD
Elizabeth · 12 mi away
0.36 MGD
Scales Mound · 14 mi away
—
Winslow · 14 mi away
0.03 MGD
Hanover · 16 mi away
0.09 MGD
Mt. Carroll · 19 mi away
0.12 MGD
Stockton Stp, Village 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 August 9, 2026.