Robert A. Weese Filtration Plant

Robert A. Weese Water Filtration Plant Oceanside purchases imported raw water from the San Diego County Water Authority and treats it at the Robert A. Weese Filtration Plant outside of the city limits.

The plant was constructed in 1983 and has a treatment capacity of 25 million gallons per day (mgd).  Treatment consists of rapid mix, flocculation, direct filtration, and disinfection processes.