Water Replenishment District of Southern California

Leo J. Vander Lans Water Treatment Facility

The Leo J. Vander Lans Advanced Water Treatment Facility (AWTF) is a state-of-the-art water treatment facility that will ensure that Southern California 's groundwater supply is sufficient, clean and safe. Located in the City of Long Beach, the facility supplies water to protect the Central Basin groundwater basin from seawater contamination and, ultimately, to protect the drinking water for the region.

The facility treats effluent water from the Sanitation District of Los Angeles County's Long Beach Water Reclamation Plant using microfiltration, reverse osmosis and ultraviolet. This technique is considered the best technology currently available and has been successfully utilized in similar projects.

About 2.7 million gallons of near distilled quality water are produced daily which is blended with imported water and pumped into the Alamitos Seawater Barrier, one of three seawater barrier systems within the WRD service area that provides protection against seawater intrusion. There will be extensive monitoring of the water quality at several monitoring wells near the barrier to ensure that the highest standards are met and maintained.

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