Appleton City WWTF
Appleton, WI · Outagamie County · Publicly Owned Treatment Works
- Average flow
- 9.25 MGD
- Design flow
- —
- NPDES permit
- WI0023221
- Expired
- Permit expires
- March 2022
- Population served
- 74,098
- CWNS 2022
Appleton City WWTF is a publicly owned wastewater treatment works in Appleton, Outagamie County, Wisconsin treating an average of 9.25 million gallons per day, serving about 74,098 residents. Treatment on site includes clarifiers, uncovered lagoons, biogas silos, biogas balloons. It discharges under NPDES permit WI0023221 (expired), which expires in March 2022, with 7 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
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
4 verified contacts for Appleton City WWTF, with validated emails and direct phone numbers.
Unlock 4 verified contacts (1 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Appleton City WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Neenah · 5 mi away
5.31 MGD
Kaukauna · 6 mi away
2.21 MGD
Menasha · 7 mi away
—
Woodville · 9 mi away
—
Kaukauna · 10 mi away
0.28 MGD
Holland · 11 mi away
0.25 MGD
Wrightstown · 12 mi away
—
Brillion · 13 mi away
—
Appleton City 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 September 11, 2026; facility record last updated April 24, 2025.