- Year Built: 1979
- Length: 1.5 Miles off Aliso Creek Beach
- Capacity Used Today: 11.8 million gallons per day
- Water Quality Monitoring Sites: 16
- Monitoring Frequency: Twice per week in dry season; one per week in wet season
- Annual Water Quality Samples: Nearly 1,700
Purpose: The Aliso Creek Outfall discharges highly treated wastewater 1.5 miles off the Orange County coast in accordance with strict state and federal laws. The Regional Water Quality Control Board governs this discharge process. SOCWA holds a National Pollution Discharge Elimination System (NPDES) permit, which must be renewed by the Regional Board by application filed every five years.