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Groundwater Replenishment System (GWRS), Orange County, California

Project Type

Water treatment plant

Construction Cost of Existing GWR System

$480m

Estimated Expansion Cost

$142.7m

Expansion Work Started

January 2012

Completed

2013

Existing Membrane System Capacity

70MGD

Capacity After First Expansion

100MGD

Expansion Work Include

Memcor CS membrane modules, ancillaries, control system upgrades and related electrical works

Treatment Process

Microfiltration, reverse osmosis (RO), ultraviolet (UV) disinfection with hydrogen peroxide

Operators

Orange County Water District (OCWD), Orange County Sanitation District (OCSD)

MEMCOR Submerged Membrane System Supplier

Siemens

Hollow Fibre Membrane Treatment System Supplier

Siemens

Designer of Proposed Expansion

Black & Veatch

Staff Assistance for the Proposed Expansion

Separation process
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