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Based on “Mariamne Beuscher”.

Orange County, world’s largest producer of purified wastewater

The Orange County Water District is now the world’s largest producer of purified wastewater. The district’s Groundwater Replenishment System, which began in 2008 in partnership with the Orange County Sanitation District, uses the combined processes of microfiltration, reverse osmosis and ultraviolet light to purify treated wastewater.