Monroe Wastewater Treatment Facility
Monroe, WI · Green County · Publicly Owned Treatment Works
- Average flow
- 1.5 MGD
- Design flow
- 3.57 MGD
- NPDES permit
- WI0020362
- Expired
- Permit expires
- December 2025
- Population served
- 11,756
- CWNS 2022
Monroe Wastewater Treatment Facility is a publicly owned wastewater treatment works in Monroe, Green County, Wisconsin treating an average of 1.5 million gallons per day against a permitted design capacity of 3.57 MGD, serving about 11,756 residents. Treatment on site includes clarifiers, uncovered lagoons, biogas silos, biogas balloons. It discharges under NPDES permit WI0020362 (expired), which expires in December 2025, with 17 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Uncovered lagoons
Unlock
Biogas silos
Unlock
Biogas balloons
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 17
- Effluent violations
- 17
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for Monroe Wastewater Treatment Facility, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Monroe Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Browntown · 6 mi away
0.003 MGD
Monticello · 11 mi away
0.21 MGD
Argyle · 12 mi away
—
Brodhead · 14 mi away
0.21 MGD
New Glarus · 14 mi away
0.34 MGD
Gratiot · 19 mi away
0.009 MGD
Belleville · 19 mi away
0.17 MGD
Brooklyn · 23 mi away
—
Monroe 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 13, 2025.