Cross Plains Waterworks
Cross Plains, WI · Dane County · Publicly Owned Treatment Works
- Average flow
- 0.4 MGD
- Design flow
- 0.45 MGD
- NPDES permit
- WI0020788
- Expired
- Permit expires
- December 2025
- Population served
- 3,460
- CWNS 2022
Cross Plains Waterworks is a publicly owned wastewater treatment plant in Cross Plains, Dane County, Wisconsin treating an average of 0.4 million gallons per day against a permitted design capacity of 0.45 MGD, serving about 3,460 residents. Treatment on site includes carrousels / oxidation ditches. It discharges under NPDES permit WI0020788 (expired), which expires in December 2025, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Carrousels / oxidation ditches
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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.
Capital improvement projects in Cross Plains
Cross Plains's capital improvement plan lists 1 water, sewer and wastewater line items worth $3M starting 2027–2027. The largest budgeted items are shown here.
| Project | Budget | Years |
|---|---|---|
| Wastewater Treatment Facility updates | $2,700,000 | 2027–2027 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Cross Plains Waterworks.
No verified contacts on file yet
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Nearby wastewater treatment plants in Wisconsin
Mazomanie · 9 mi away
0.34 MGD
Mount Horeb · 10 mi away
—
Sauk City · 10 mi away
0.01 MGD
Blue Mounds · 11 mi away
0.03 MGD
Lodi · 16 mi away
0.27 MGD
Belleville · 19 mi away
0.17 MGD
Spring Green · 21 mi away
0.14 MGD
Hollandale · 21 mi away
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Cross Plains Waterworks: 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 February 27, 2025.