Ixonia Sanitary District # 1
Ixonia, WI · Jefferson County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.1 MGD
- NPDES permit
- WI0031038
- Expired
- Permit expires
- March 2022
- Population served
- 1,500
- CWNS 2022
Ixonia Sanitary District # 1 is a publicly owned wastewater treatment plant in Ixonia, Jefferson County, Wisconsin, serving about 1,500 residents. Treatment on site includes aerated lagoons. It discharges under NPDES permit WI0031038 (expired), which expires in March 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.
Aerated lagoons
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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
Decision-makers at Ixonia Sanitary District # 1.
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Nearby wastewater treatment plants in Wisconsin
Oconomowoc · 6 mi away
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Ashippun · 6 mi away
0.09 MGD
Watertown · 7 mi away
2.81 MGD
Lebanon · 8 mi away
0.05 MGD
Dousman · 10 mi away
0.48 MGD
Delafield · 11 mi away
2.33 MGD
Hustisford · 14 mi away
0.14 MGD
Clyman · 14 mi away
0.02 MGD
Ixonia Sanitary District # 1: 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 6, 2025.