Our Regional Treatment System

 

San Diego's Metropolitan Sewer System serves a population of more than 2 million people in a 450-square-mile service area that stretches from Del Mar and Poway to the north, Alpine and Lakeside in the east, to the Mexican border in the south.

The system treats wastewater from the City of San Diego and 15 other cities and agencies, whose influent accounts for 34 percent of the wastewater flow generated. Together, the City of San Diego and the 15 other participating agencies, who comprise the Metro Wastewater JPA, generate approximately 180 million gallons of wastewater per day.

The Metro System includes three wastewater treatment plants, a biosolids processing facility, 87 pump stations, two ocean outfalls, and a comprehensive ocean monitoring program.

Point Loma Wastewater Treatment Plant

South Bay Ocean Outfall