Green Bay Metropolitan Sewerage District
2231 N Quincy St, Green Bay, WI 54302 · Brown County · Publicly Owned Treatment Works
- Average flow
- 36.81 MGD
- Design flow
- —
- NPDES permit
- WIL065251
- Effective
- Permit expires
- December 2030
- Population served
- —
- CWNS 2022
Green Bay Metropolitan Sewerage District is a publicly owned wastewater treatment works in Green Bay, Brown County, Wisconsin treating an average of 36.81 million gallons per day. It discharges under NPDES permit WIL065251 (effective), which expires in December 2030, with 7 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in April 2022.
Treatment technology
4 treatment structures and unit processes identified at Green Bay Metropolitan Sewerage District.
Available with a free Klarifi account
See the full treatment train at Green Bay Metropolitan Sewerage District: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Green Bay Metropolitan Sewerage District in EPA's ICIS system.
- Formal actions
- 2
- 2 since FY2020
- Penalties assessed
- $260,000
- all cases
- Compliance actions
- $133,740
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Apr 2022
GREEN BAY METROPOLITAN SEWERAGE DISTRICT (NEW WATER) - APO/CAFO
Administrative order · CAA, New Source Performance Standards · Final Order With Penalty · Penalty $260,000
EPA's description of the case:
“GBMSD exceeded the 40 CFR Part 60 Subpart LLLL mercury emissions limit at its fluidized bed sewage sludge incinerator (SSI). The limit exceedance was the result of GBMSD?s inability to operate its…”
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Source: EPA ECHO, civil enforcement case 05-2022-5016.
Full case history with a free Klarifi account
Every action against Green Bay Metropolitan Sewerage District with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
5 verified contacts for Green Bay Metropolitan Sewerage District, with validated emails and direct phone numbers.
Unlock 5 verified contacts (2 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Green Bay Metropolitan Sewerage District, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Oneida · 10 mi away
0.17 MGD
Little Suamico · 13 mi away
0.13 MGD
Denmark · 16 mi away
0.57 MGD
Greenleaf · 16 mi away
—
Wrightstown · 16 mi away
0.29 MGD
Abrams · 17 mi away
0.03 MGD
Kaukauna · 17 mi away
0.34 MGD
Casco · 19 mi away
0.08 MGD
Green Bay Metropolitan Sewerage District: 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 July 3, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms