St Croix Falls City Of
St Croix Falls, WI · Polk County · Publicly Owned Treatment Works
- Average flow
- 0.19 MGD
- Design flow
- 0.18 MGD
- NPDES permit
- WI0020796
- Expired
- Permit expires
- June 2022
- Population served
- 2,197
- CWNS 2022
St Croix Falls City Of is a publicly owned wastewater treatment plant in St Croix Falls, Polk County, Wisconsin treating an average of 0.19 million gallons per day against a permitted design capacity of 0.18 MGD, serving about 2,197 residents. Treatment on site includes clarifiers. It discharges under NPDES permit WI0020796 (expired), which expires in June 2022, with 10 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 10
- Effluent violations
- 10
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for St Croix Falls City Of, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at St Croix Falls City Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Osceola · 7 mi away
0.25 MGD
Amery · 16 mi away
0.28 MGD
Star Prairie · 16 mi away
0.07 MGD
Somerset · 19 mi away
0.22 MGD
New Richmond · 20 mi away
0.73 MGD
Clayton · 24 mi away
0.09 MGD
Turtle Lake · 25 mi away
0.51 MGD
Grantsburg · 26 mi away
0.17 MGD
St Croix Falls City Of: 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 27, 2025.