Edward C. Little Water Recycling Facility – Phase V Expansion, Los Angeles, CA
Reducing Dependence on Imported Water
West Basin Municipal Water District is a water wholesaler that provides imported and recycled water to 17 cities in the Los Angeles, California, region. Its Edward C. Little Water Recycling Facility (ECLWRF) in El Segundo converts secondary effluent from the Hyperion Wastewater Treatment Plant into ultra-high-quality recycled water for groundwater replenishment, injection into the seawater intrusion barrier, industrial use, irrigation, and other reuse purposes. To reduce dependence on imported water, West Basin increased the water recycling capacity of ECLWRF through its Phase V Expansion.
Parsons provided design, self-performed construction, construction quality control, permitting, control system integration, and startup and commissioning for ECLWRF’s Phase V Expansion, which added an innovative 30-million-gallons-per-day (MGD) capacity ozonation pretreatment process and expanded the existing microfiltration (MF), reverse osmosis (RO), and ultraviolet-advanced oxidation (UV-AOP) processes. Other improvements included a high-rate clarification expansion and the addition of solids-handling facilities. Together, these improvements increased the facility’s overall design capacity from 46.8 MGD to 62.3 MGD. This challenging design-build program was accomplished on a constrained site while the facility remained fully operational.