Walnut Stp, Village Of
Henpeck Road, Walnut, IL 61376 · Bureau County · Publicly Owned Treatment Works
- Average flow
- 0.09 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 0.09 million gallons per day against a permitted design capacity of 0.45 MGD, serving about 1,515 residents. It discharges under NPDES permit IL0031615 (effective), which expires in May 2029, with 1 recorded violation in the last three years.
Treatment technology
One treatment structure or unit process identified at Walnut Stp, Village Of.
Available with a free Klarifi account
See the full treatment train at Walnut Stp, Village Of: structures, unit processes and planned upgrades, with 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.
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Nearby wastewater treatment plants in Illinois
Ohio · 7 mi away
0.06 MGD
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0.03 MGD
Tampico · 11 mi away
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Wyanet · 14 mi away
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Sheffield · 15 mi away
0.13 MGD
Buda · 16 mi away
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Amboy · 17 mi away
0.48 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 October 26, 2026; facility record last updated March 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms