Maiden Rock Wastewater Treatment Facility
Maiden Rock, WI · Pierce County · Publicly Owned Treatment Works
- Average flow
- 0.0078 MGD
- Design flow
- 0.02 MGD
- NPDES permit
- WI0032361
- Expired
- Permit expires
- September 2023
- Population served
- 123
- CWNS 2022
Maiden Rock Wastewater Treatment Facility is a publicly owned wastewater treatment works in Maiden Rock, Pierce County, Wisconsin treating an average of 0.0078 million gallons per day against a permitted design capacity of 0.02 MGD, serving about 123 residents. It discharges under NPDES permit WI0032361 (expired), which expires in September 2023, with 3 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
- 3
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Maiden Rock Wastewater Treatment Facility.
No verified contacts on file yet
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Pepin · 13 mi away
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Durand City · 17 mi away
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Spring Valley · 19 mi away
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Downsville · 24 mi away
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River Falls · 26 mi away
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Prescott · 26 mi away
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Maiden Rock 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 July 18, 2023.