Marshfield Wastewater Utility
Marshfield, WI · Wood County · Publicly Owned Treatment Works
- Average flow
- 2.42 MGD
- Design flow
- 3.5 MGD
- NPDES permit
- WI0021024
- Expired
- Permit expires
- September 2023
- Population served
- 19,144
- CWNS 2022
Marshfield Wastewater Utility is a publicly owned wastewater treatment works in Marshfield, Wood County, Wisconsin treating an average of 2.42 million gallons per day against a permitted design capacity of 3.5 MGD, serving about 19,144 residents. Treatment on site includes carrousels / oxidation ditches, biogas balloons. It discharges under NPDES permit WI0021024 (expired), which expires in September 2023, with 4 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
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Marshfield
Marshfield's capital improvement plan lists 18 water, sewer and wastewater line items worth $18M starting 2026–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Marshfield →
| Project | Budget | Years |
|---|---|---|
| North East Force Main New | $8,822,000 | 2026–2027 |
| Disinfection Addition | $3,300,000 | 2029–2030 |
| Sanitary Sewer Lining - City Wide | $1,500,000 | 2026–2030 |
| Lincoln Lift Station Upgrade Controls/Generator | $1,200,000 | 2026–2027 |
| Vine Ave (4th to 14th) Sanitary Reconstruct | $630,000 | 2027–2027 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
2 verified contacts for Marshfield Wastewater Utility, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Marshfield Wastewater Utility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Auburndale · 7 mi away
—
Arpin · 8 mi away
0.03 MGD
Stratford · 8 mi away
—
Spencer · 11 mi away
0.18 MGD
Milladore · 11 mi away
0.01 MGD
Stratford · 12 mi away
0.1 MGD
Vesper · 13 mi away
0.09 MGD
Pittsville · 14 mi away
0.08 MGD
Marshfield Wastewater Utility: 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 August 3, 2026.