Walnut Stp, Village Of
Walnut, IL · Bureau County · Publicly Owned Treatment Works
- Average flow
- 0.08 MGD
- Design flow
- 0.45 MGD
- NPDES permit
- IL0031615
- Effective
- Permit expires
- May 2029
- Population served
- 1,515
- CWNS 2022
Walnut Stp, Village Of is a publicly owned wastewater treatment works in Walnut, Bureau County, Illinois treating an average of 0.08 million gallons per day against a permitted design capacity of 0.45 MGD, serving about 1,515 residents. Treatment on site includes aerated lagoons. It discharges under NPDES permit IL0031615 (effective), which expires in May 2029, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated 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
Decision-makers at Walnut 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
Ohio · 7 mi away
0.03 MGD
Manlius · 8 mi away
0.03 MGD
Tampico · 11 mi away
0.05 MGD
Wyanet · 14 mi away
0.09 MGD
Sheffield · 15 mi away
0.13 MGD
Buda · 16 mi away
0.07 MGD
Amboy · 17 mi away
0.3 MGD
Lamoille · 17 mi away
0.05 MGD
Walnut 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 March 28, 2025.