Denmark Wastewater Treatment Facility
Denmark, WI · Brown County · Publicly Owned Treatment Works
- Average flow
- 0.46 MGD
- Design flow
- 0.5 MGD
- NPDES permit
- WI0021741
- Expired
- Permit expires
- September 2023
- Population served
- 2,108
- CWNS 2022
Denmark Wastewater Treatment Facility is a publicly owned wastewater treatment works in Denmark, Brown County, Wisconsin treating an average of 0.46 million gallons per day against a permitted design capacity of 0.5 MGD, serving about 2,108 residents. It discharges under NPDES permit WI0021741 (expired), which expires in September 2023, with 61 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 61
- Effluent violations
- 61
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Denmark Wastewater Treatment Facility.
No verified contacts on file yet
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Nearby wastewater treatment plants in Wisconsin
Maribel · 5 mi away
0.02 MGD
Manitowoc · 14 mi away
0.0057 MGD
Greenleaf · 15 mi away
0.09 MGD
Green Bay · 16 mi away
27.53 MGD
Reedsville · 16 mi away
0.005 MGD
Casco · 17 mi away
0.06 MGD
Wrightstown · 17 mi away
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Brillion · 18 mi away
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Denmark 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 October 6, 2025.