Rend Lake Conservancy District - STP
Ewing, IL · Franklin County · Publicly Owned Treatment Works
- Average flow
- 0.23 MGD
- Design flow
- 1.25 MGD
- NPDES permit
- IL0065111
- Effective
- Permit expires
- February 2029
- Population served
- —
- CWNS 2022
Rend Lake Conservancy District - STP is a publicly owned wastewater treatment works in Ewing, Franklin County, Illinois treating an average of 0.23 million gallons per day against a permitted design capacity of 1.25 MGD. Treatment on site includes aerated lagoons. It discharges under NPDES permit IL0065111 (effective), which expires in February 2029, with 5 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 5
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
4 verified contacts for Rend Lake Conservancy District - STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Rend Lake Conservancy District - STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Benton · 7 mi away
0.06 MGD
Bonnie · 8 mi away
0.004 MGD
Logan · 9 mi away
0.0019 MGD
Sesser · 11 mi away
0.02 MGD
Valier · 12 mi away
0.02 MGD
Belle Rive · 12 mi away
0.001 MGD
Waltonville · 13 mi away
0.08 MGD
West Frankfort · 13 mi away
0.7 MGD
Rend Lake Conservancy 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 8, 2025.