Monroe Wastewater Treatment Facility
1224 Tenth Avenue West, Monroe, WI 53566 · Green County · Publicly Owned Treatment Works
- Average flow
- 1.64 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 1.64 million gallons per day against a permitted design capacity of 3.57 MGD, serving about 11,756 residents. It discharges under NPDES permit WI0020362 (expired), which expires in December 2025, with 17 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Monroe Wastewater Treatment Facility.
Available with a free Klarifi account
See the full treatment train at Monroe Wastewater Treatment Facility: structures, unit processes and planned upgrades, with 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
0.0048 MGD
South Wayne · 10 mi away
—
Monticello · 11 mi away
0.23 MGD
Argyle · 12 mi away
—
Brodhead · 14 mi away
0.22 MGD
New Glarus · 14 mi away
0.34 MGD
Gratiot · 19 mi away
0.01 MGD
Belleville · 19 mi away
0.18 MGD
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 October 26, 2026; facility record last updated September 14, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms