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Water in Orange County Needs “One Voice” <br /> <br /> <br />2021-2022 Orange County Grand Jury Page 10 <br /> <br /> <br /> <br /> <br />Differences in Supply Sources <br />South Orange County’s approximate 600,000 residents rely primarily on imported water (70-100 <br />percent of needed supply depending on location) from hundreds of miles away. The imported <br />water is purchased through the Municipal Water District of Orange County (MWDOC).6F <br />7 <br />North and Central County’s roughly 2.8 million residents rely primarily (19-99 percent <br />depending on location) on groundwater supplied OCWD, which refills the Orange County <br />Groundwater Basin with many different water supplies: water from the Santa Ana River; local <br />rainfall; treated and purified wastewater through the Groundwater Replenishment System <br />(GWRS); and imported water from the Colorado River and Northern California.7F <br />8 <br /> <br /> <br />7 www.ocwd.com/about & www.mwdoc.com/wp-content/uploads/2017/05/Water-Supply.pdf <br />8 www.mwdoc.com/wp-content/uploads/2017/05/Water-Supply.pdf