Operating Experience of the West Basin Edward C. Little Water Recycling Facility Phase V Expansion

The West Basin Municipal Water District?s Edward C. Little Water Recycling Facility (ECLWRF) located in El Segundo, CA is a world class facility that produces four qualities of recycled water for municipal, commercial and industrial applications including water supply to injection wells that are part of West Coast Barrier System. The source of recycled water for facility is the City of Los Angeles? Hyperion Water Reclamation Plant (WRP). The most recent expansion of the facility (Phase V) included installing a new pre-ozonation system, addition of new microfiltration (MF) and reverse osmosis (RO) treatment units, and expansion of the UV/peroxide system to increase the capacity of the Barrier Water treatment system by 5 mgd to 17.5 mgd. The project also included expansion of the Title 22 treatment system by 20 mgd to 58 mgd by adding a new pretreatment system and filters, and improvements to the solids dewatering system and chemical feed systems. The Phase V project was completed in 2013.