Mayville Wastewater Treatment
Mayville, WI · Dodge County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 1.1 MGD
- NPDES permit
- WI0024643
- Expired
- Permit expires
- September 2024
- Population served
- 5,400
- CWNS 2022
Mayville Wastewater Treatment is a publicly owned wastewater treatment works in Mayville, Dodge County, Wisconsin, serving about 5,400 residents. Treatment on site includes clarifiers, biogas balloons. It discharges under NPDES permit WI0024643 (expired), which expires in September 2024, with 10 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 10
- Effluent violations
- 10
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Mayville Wastewater Treatment, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Mayville Wastewater Treatment, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Theresa · 4 mi away
0.12 MGD
Horicon · 6 mi away
0.39 MGD
Burnett · 7 mi away
0.01 MGD
Iron Ridge · 8 mi away
0.15 MGD
Brownsville · 8 mi away
0.05 MGD
Allenton · 11 mi away
0.08 MGD
Juneau · 12 mi away
—
Hustisford · 12 mi away
0.14 MGD
Mayville Wastewater Treatment: 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 May 29, 2025.