Winslow Stp, Village Of
Woodman Avenue, Winslow, IL 61089 · Stephenson County · Publicly Owned Treatment Works
- Average flow
- 0.04 MGD
- Design flow
- 0.14 MGD
- NPDES permit
- IL0048259
- Effective
- Permit expires
- August 2027
- Population served
- 361
- CWNS 2022
Winslow Stp, Village Of is a publicly owned wastewater treatment works in Winslow, Stephenson County, Illinois treating an average of 0.04 million gallons per day against a permitted design capacity of 0.14 MGD, serving about 361 residents. It discharges under NPDES permit IL0048259 (effective), which expires in August 2027, with 23 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Winslow Stp, Village Of.
Available with a free Klarifi account
See the full treatment train at Winslow Stp, Village Of: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 23
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Winslow Stp, Village Of, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Winslow Stp, Village Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Orangeville · 8 mi away
0.11 MGD
Lena · 9 mi away
0.29 MGD
Warren · 10 mi away
0.15 MGD
Cedarville · 12 mi away
0.09 MGD
Stockton · 14 mi away
0.5 MGD
Apple River · 16 mi away
0.06 MGD
Dakota · 16 mi away
0.05 MGD
Rock City · 18 mi away
0.02 MGD
Winslow 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 November 8, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms