Port Washington WWTP
Port Washington, WI · Ozaukee County · Publicly Owned Treatment Works
- Average flow
- 1.04 MGD
- Design flow
- 2.14 MGD
- NPDES permit
- WI0020460
- Expired
- Permit expires
- March 2026
- Population served
- 11,672
- CWNS 2022
Port Washington WWTP is a publicly owned wastewater treatment works in Port Washington, Ozaukee County, Wisconsin treating an average of 1.04 million gallons per day against a permitted design capacity of 2.14 MGD, serving about 11,672 residents. Treatment on site includes clarifiers, biogas silos, biogas balloons. It discharges under NPDES permit WI0020460 (expired), which expires in March 2026, with 20 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
- 20
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Port Washington
Port Washington's capital improvement plan lists 9 water, sewer and wastewater line items worth $2M starting 2025–2025. The largest budgeted items are shown here.
All water and sewer capital projects in Port Washington →
| Project | Budget | Years |
|---|---|---|
| Special Main Projects – Spring Street | $1,100,000 | 2025–2025 |
| Creek Crossing Protection – Valley Creek | $170,000 | 2025–2025 |
| Special Main Projects – Webster spur | $120,000 | 2025–2025 |
| Aerobic Sludge Thickener Refurbishment | $100,000 | 2025–2025 |
| Lift Station 3 | $100,000 | 2025–2025 |
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
4 verified contacts for Port Washington WWTP, with validated emails and direct phone numbers.
Unlock 4 verified contacts (1 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Port Washington WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Saukville · 4 mi away
0.98 MGD
Fredonia · 7 mi away
0.19 MGD
Grafton · 7 mi away
—
Belgium · 8 mi away
0.19 MGD
Cedarburg · 9 mi away
—
Random Lake · 12 mi away
0.38 MGD
Cedar Grove · 13 mi away
0.12 MGD
West Bend · 14 mi away
—
Port Washington WWTP: 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 March 6, 2025.