Deerfield Wastewater Treatment Facility
Industrial Park Road, Deerfield, WI 53531 · Dane County · Publicly Owned Treatment Works
- Average flow
- 0.2 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 0.2 million gallons per day against a permitted design capacity of 0.17 MGD, serving about 2,300 residents. It discharges under NPDES permit WI0023744 (expired), which expires in December 2025, with 12 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Deerfield Wastewater Treatment Facility.
Available with a free Klarifi account
See the full treatment train at Deerfield Wastewater Treatment Facility: structures, unit processes and planned upgrades, with exact unit counts.
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
0.37 MGD
Rockdale · 6 mi away
0.01 MGD
Marshall · 8 mi away
0.35 MGD
Lake Mills · 9 mi away
0.61 MGD
Sun Prairie · 11 mi away
3.41 MGD
Stoughton · 12 mi away
1.1 MGD
Jefferson · 14 mi away
1.17 MGD
Madison · 15 mi away
39.37 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 October 26, 2026; facility record last updated November 20, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms