Neenah-Menasha Sewerage Commission WWTF
101 Garfield Ave, Menasha, WI 54952 · Winnebago County · Publicly Owned Treatment Works
- Average flow
- 12.33 MGD
- Design flow
- 18 MGD
- NPDES permit
- WI0026085
- Expired
- Permit expires
- June 2022
- Population served
- 67,716
- CWNS 2022
Neenah-Menasha Sewerage Commission WWTF is a publicly owned wastewater treatment works in Menasha, Winnebago County, Wisconsin treating an average of 12.33 million gallons per day against a permitted design capacity of 18 MGD, serving about 67,716 residents. It discharges under NPDES permit WI0026085 (expired), which expires in June 2022, with 194 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Neenah-Menasha Sewerage Commission WWTF.
Available with a free Klarifi account
See the full treatment train at Neenah-Menasha Sewerage Commission WWTF: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 194
- Effluent violations
- 12
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Neenah-Menasha Sewerage Commission WWTF, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Neenah-Menasha Sewerage Commission WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Neenah · 2 mi away
6.52 MGD
Appleton · 7 mi away
9.3 MGD
Winchester · 9 mi away
0.13 MGD
Oshkosh · 11 mi away
0.06 MGD
Woodville · 11 mi away
—
New Holstein · 12 mi away
0.06 MGD
Dale · 12 mi away
0.03 MGD
Kaukauna · 12 mi away
4.54 MGD
Neenah-Menasha Sewerage Commission WWTF: 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 April 13, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms