Yorkville-Bristol Sd STP
Yorkville, IL · Kendall County · Publicly Owned Treatment Works
- Average flow
- 1.99 MGD
- Design flow
- —
- NPDES permit
- ILL036412
- Effective
- Permit expires
- December 2030
- Population served
- 20,101
- CWNS 2022
Yorkville-Bristol Sd STP is a publicly owned wastewater treatment works in Yorkville, Kendall County, Illinois treating an average of 1.99 million gallons per day, serving about 20,101 residents. Treatment on site includes biogas balloons. It discharges under NPDES permit ILL036412 (effective), which expires in December 2030, with 216 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas balloons
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Compliance snapshot (last 3 years)
- Total violations
- 216
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
4 verified contacts for Yorkville-Bristol Sd STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Yorkville-Bristol Sd STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Plano · 4 mi away
0.69 MGD
Big Rock · 10 mi away
0.02 MGD
Newark · 10 mi away
0.06 MGD
Somonauk · 12 mi away
0.09 MGD
Hinckley · 13 mi away
0.17 MGD
Plainfield · 13 mi away
4.34 MGD
Bolingbrook · 15 mi away
2.52 MGD
Sheridan · 15 mi away
0.3 MGD
Yorkville-Bristol Sd 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 5, 2025.