Wi Dells Lake Delton Sew Comm
Lake Delton, WI · Sauk County · Publicly Owned Treatment Works
- Average flow
- 1.4 MGD
- Design flow
- 2.83 MGD
- NPDES permit
- WI0031402
- Expired
- Permit expires
- March 2022
- Population served
- 5,827
- CWNS 2022
Wi Dells Lake Delton Sew Comm is a publicly owned wastewater treatment plant in Lake Delton, Sauk County, Wisconsin treating an average of 1.4 million gallons per day against a permitted design capacity of 2.83 MGD, serving about 5,827 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches, biogas silos, biogas balloons. It discharges under NPDES permit WI0031402 (expired), which expires in March 2022, with 0 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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Carrousels / oxidation ditches
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Biogas silos
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Biogas balloons
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Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Wi Dells Lake Delton Sew Comm, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Wi Dells Lake Delton Sew Comm, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Lyndon Station · 9 mi away
0.04 MGD
Baraboo · 10 mi away
1.29 MGD
North Freedom · 12 mi away
0.02 MGD
Rock Springs · 12 mi away
0.0029 MGD
Reedsburg · 13 mi away
2.02 MGD
Oxford · 15 mi away
0.03 MGD
Loganville · 17 mi away
0.0067 MGD
Portage · 17 mi away
1.52 MGD
Wi Dells Lake Delton Sew Comm: 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 August 18, 2026.