Merrill City Of
Merrill, WI · Lincoln County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 2.14 MGD
- NPDES permit
- WI0020150
- Expired
- Permit expires
- March 2024
- Population served
- 9,955
- CWNS 2022
Merrill City Of is a publicly owned wastewater treatment plant in Merrill, Lincoln County, Wisconsin, serving about 9,955 residents. Treatment on site includes clarifiers, biogas silos, biogas balloons, primary clarification or sedimentation. It discharges under NPDES permit WI0020150 (expired), which expires in March 2024, with 2 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Biogas silos
Unlock
Biogas balloons
Unlock
Primary Clarification or Sedimentation
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Merrill City Of, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Merrill City Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Brokaw · 11 mi away
0.02 MGD
Gleason · 12 mi away
0.02 MGD
Wausau · 16 mi away
4.39 MGD
Tomahawk · 19 mi away
0.39 MGD
Wausau · 22 mi away
2.94 MGD
Athens · 22 mi away
0.1 MGD
Edgar · 23 mi away
0.09 MGD
Antigo · 25 mi away
1.21 MGD
Merrill City Of: 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.