Oxnard Wastewater Treatment Plant (owtp)
Oxnard, CA · Ventura County · Publicly Owned Treatment Works
- Average flow
- 16.6 MGD
- Design flow
- —
- NPDES permit
- CAL054097
- Effective
- Permit expires
- December 2030
- Population served
- 212,912
- CWNS 2022
Oxnard Wastewater Treatment Plant (owtp) is a publicly owned wastewater treatment works in Oxnard, Ventura County, California treating an average of 16.6 million gallons per day, serving about 212,912 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit CAL054097 (effective), which expires in December 2030, with 137 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
- 137
- Effluent violations
- 24
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Oxnard
Oxnard's capital improvement plan lists 25 water, sewer and wastewater line items worth $245M starting 2025–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Oxnard →
| Project | Budget | Years |
|---|---|---|
| Wastewater OWTP: Primary Clarifiers and Activated Sludge Improvements | $42,500,000 | 2025–2027 |
| Water Distribution: Oxnard Conduit Replacement Project | $41,500,000 | 2025–2028 |
| Recycled Water: AWPF Improvements and Expansion | $33,000,000 | 2025–2029 |
| Water Distribution: Kamala Park Neighborhood Cast Iron Pipe Replacement | $27,300,000 | 2025–2027 |
| Wastewater OWTP: Digester/Cogeneration Improvements | $17,000,000 | 2025–2029 |
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
2 verified contacts for Oxnard Wastewater Treatment Plant (owtp), with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Oxnard Wastewater Treatment Plant (owtp), plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Camarillo · 8 mi away
—
Ventura · 8 mi away
—
Camarillo · 11 mi away
3.57 MGD
Ventura · 15 mi away
1.56 MGD
Camarillo · 16 mi away
8.09 MGD
Simi Valley · 23 mi away
6.5 MGD
Carpinteria · 26 mi away
1.22 MGD
Malibu · 28 mi away
—
Oxnard Wastewater Treatment Plant (owtp): 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 27, 2025.