German Valley WWTP
German Valley, IL · Stephenson County · Publicly Owned Treatment Works
- Average flow
- 0.02 MGD
- Design flow
- 0.2 MGD
- NPDES permit
- IL0024821
- Effective
- Permit expires
- April 2029
- Population served
- 433
- CWNS 2022
German Valley WWTP is a publicly owned wastewater treatment works in German Valley, Stephenson County, Illinois treating an average of 0.02 million gallons per day against a permitted design capacity of 0.2 MGD, serving about 433 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IL0024821 (effective), which expires in April 2029, with 55 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 55
- Effluent violations
- 34
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for German Valley WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at German Valley WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Seward · 7 mi away
0.007 MGD
Leaf River · 7 mi away
0.04 MGD
Forreston · 7 mi away
0.08 MGD
Pecatonica · 9 mi away
0.14 MGD
Dakota · 12 mi away
0.03 MGD
Cedarville · 13 mi away
0.03 MGD
Shannon · 13 mi away
0.18 MGD
Rock City · 14 mi away
0.02 MGD
German Valley WWTP: 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 November 7, 2025.