Deerfield Wastewater Treatment Facility
Deerfield, WI · Dane County · Publicly Owned Treatment Works
- Average flow
- 0.23 MGD
- Design flow
- 0.17 MGD
- NPDES permit
- WI0023744
- Expired
- Permit expires
- December 2025
- Population served
- 2,300
- CWNS 2022
Deerfield Wastewater Treatment Facility is a publicly owned wastewater treatment works in Deerfield, Dane County, Wisconsin treating an average of 0.23 million gallons per day against a permitted design capacity of 0.17 MGD, serving about 2,300 residents. Treatment on site includes biogas balloons. It discharges under NPDES permit WI0023744 (expired), which expires in December 2025, with 12 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas balloons
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Compliance snapshot (last 3 years)
- Total violations
- 12
- Effluent violations
- 12
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Deerfield Wastewater Treatment Facility, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Deerfield Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Cambridge · 4 mi away
0.34 MGD
Rockdale · 6 mi away
0.01 MGD
Marshall · 8 mi away
0.37 MGD
Lake Mills · 9 mi away
—
Stoughton · 12 mi away
1.06 MGD
Jefferson · 14 mi away
1.06 MGD
Fort Atkinson · 15 mi away
—
Edgerton · 16 mi away
0.47 MGD
Deerfield Wastewater Treatment Facility: 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 November 20, 2025.