Aliso Creek Ocean Outfall
Dana Point, CA · Orange County · Publicly Owned Treatment Works
- Average flow
- 11.47 MGD
- Design flow
- 104 MGD
- NPDES permit
- CA0107417
- Effective
- Permit expires
- April 2027
- Population served
- 45,723
- CWNS 2022
Aliso Creek Ocean Outfall is a publicly owned wastewater treatment plant in Dana Point, Orange County, California treating an average of 11.47 million gallons per day against a permitted design capacity of 104 MGD, serving about 45,723 residents. Treatment on site includes biogas silos. It discharges under NPDES permit CA0107417 (effective), which expires in April 2027, with 32 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas silos
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Compliance snapshot (last 3 years)
- Total violations
- 32
- Effluent violations
- 14
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
7 verified contacts for Aliso Creek Ocean Outfall, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Aliso Creek Ocean Outfall, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Irvine · 16 mi away
6.99 MGD
Fountain Valley · 21 mi away
77.37 MGD
Lake Elsinore · 25 mi away
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Lake Elsinore · 25 mi away
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Fallbrook · 25 mi away
1.07 MGD
Oceanside · 27 mi away
10.7 MGD
Corona · 30 mi away
7.64 MGD
Carlsbad · 32 mi away
23.78 MGD
Aliso Creek Ocean Outfall: 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 16, 2025.