Back To Press Release and News

Ground Broken on GWR Microfiltration Plant
Plant will provide water for seawater protection barrier

The Orange County Water District (OCWD) and the Orange County Sanitation District broke ground July 14, 2003 on the Initial Microfiltration (IMF) Plant for the Grounwater Replenishment System (GWR). 

The plant is needed to produce water during demolition of the existing, smaller OCWD Water Factory 21 water purification plant and construction of a larger, more advanced water purification plant for the GWR System.  

The IMF Plant is a vital component of the Districts efforts to expand the seawater barrier to maintain Orange Countys vast groundwater basin said Denis Bilodeau, president of the Orange County Water District Board of Directors. A number of dignitaries were on hand for the event including OCSD Board Chair Shirley McCracken and General Manager Blake Anderson.

Microfiltration is a low-pressure membrane process that is also used by commercial industries to process baby food, fruit juices and soda beverages, in computer chip manufacturing, and to sterilize medicines that cannot be heated. 

The IMF Plant is one of the preliminary phases of the GWR System, a joint project of OCWD and the Orange County Sanitation District.  The GWR Systems purification process takes highly treated sewer water through a redundant high-tech water treatment system that includes microfiltration, reverse osmosis and ultraviolet light with hydrogen peroxide.  The water produced by the advanced purification system will be of near-distilled water quality. 

The GWR System will ultimately provide enough water to meet the annual needs of 140,000 families when the project goes on line in 2007.  OCWDs current water supply is made up of about 50 percent groundwater and 50 percent imported water.  

Source : OCSD Website