Point Loma Sewage Plant (IMAGE) University of California - San Diego Caption San Diego County's primary wastewater treatment plan is located on the coast in the city's Point Loma neighborhood. Credit San Diego County Usage Restrictions Use photo credit as indicated License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.