Coastal Treatment Plant Regional Flow Study
At its March 5, 2026, SOCWA Board of Directors meeting, Project Committee 15 (PC-15) approved a professional services agreement with MKN/Ardurra, to prepare the Coastal Treatment Plant (CTP) Regional Flow Study.
The purpose of the study is to evaluate planning-level regional wastewater conveyance and treatment alternatives associated with potential future decommissioning of the CTP and identify major infrastructure requirements, operational impacts, regulatory considerations, recycled water impacts, and planning-level costs.
The study evaluates three primary regional alternatives:
- Redirection of Laguna Beach and Emerald Bay Services District flows to Orange County Sanitation District (OC San) Plant No. 2 and SCWD’s flows to the MNWD’s Regional Treatment Plant (RTP) in Laguna Niguel.
- Redirection of all CTP flows to the SOCWA’s JB Latham Treatment Plant (JBL) in Dana Point.
- Redirection of all CTP flows to the RTP.
The final draft report will be presented at the July 9, 2026, Board of Directors meeting.