Spring Green Wastewater Treatment Facility
Spring Green, WI · Sauk County · Publicly Owned Treatment Works
- Average flow
- 0.14 MGD
- Design flow
- 0.26 MGD
- NPDES permit
- WI0060801
- Expired
- Permit expires
- September 2019
- Population served
- 1,638
- CWNS 2022
Spring Green Wastewater Treatment Facility is a publicly owned wastewater treatment works in Spring Green, Sauk County, Wisconsin treating an average of 0.14 million gallons per day against a permitted design capacity of 0.26 MGD, serving about 1,638 residents. Treatment on site includes carrousels / oxidation ditches, biogas balloons. It discharges under NPDES permit WI0060801 (expired), which expires in September 2019, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Spring Green Wastewater Treatment Facility, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Spring Green Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Mazomanie · 13 mi away
0.34 MGD
Dodgeville · 15 mi away
0.72 MGD
Avoca · 15 mi away
0.03 MGD
Blue Mounds · 16 mi away
0.03 MGD
Highland · 18 mi away
0.06 MGD
Loganville · 20 mi away
0.0067 MGD
Linden · 20 mi away
0.03 MGD
Sauk City · 21 mi away
0.01 MGD
Spring Green 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.