Beloit Wastewater Treatment Facility
Beloit, WI · Rock County · Publicly Owned Treatment Works
- Average flow
- 3.79 MGD
- Design flow
- 9.5 MGD
- NPDES permit
- WI0023370
- Expired
- Permit expires
- September 2025
- Population served
- 36,269
- CWNS 2022
Beloit Wastewater Treatment Facility is a publicly owned wastewater treatment works in Beloit, Rock County, Wisconsin treating an average of 3.79 million gallons per day against a permitted design capacity of 9.5 MGD, serving about 36,269 residents. Treatment on site includes clarifiers, biogas silos, biogas balloons. It discharges under NPDES permit WI0023370 (expired), which expires in September 2025, with 37 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 37
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
24 verified contacts for Beloit Wastewater Treatment Facility, with validated emails and direct phone numbers.
Unlock 24 verified contacts (21 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Beloit Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Beloit · 5 mi away
0.55 MGD
Clinton · 7 mi away
0.17 MGD
Janesville · 10 mi away
9.98 MGD
Hanover · 12 mi away
0.0016 MGD
Sharon · 13 mi away
0.12 MGD
Footville · 16 mi away
0.11 MGD
Fontana · 17 mi away
0.9 MGD
Delavan · 19 mi away
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Beloit Wastewater Treatment Facility: 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 April 24, 2025.