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Last month, Metropolitan's Board of Directors got their first detailed look at the different ways direct potable reuse could be incorporated into Pure Water Southern California, which could reduce program costs while providing a readily accessible supply of drought-resilient water.
Pure Water Southern California was originally envisioned mostly as an indirect potable reuse program, providing purified recycled water for groundwater recharge, which could be used for drinking, commercial and industrial purposes. In 2023, California adopted regulations allowing direct potable reuse, in which purified recycled water can be added directly to the water supply.
In response, Metropolitan staff have been planning a direct potable reuse demonstration testing facility and studying how direct potable reuse could be integrated into the Pure Water program. Staff presented various options during a Board of Directors workshop on July 28.
A partnership between Metropolitan and Los Angeles County Sanitation Districts, Pure Water Southern California would use an advanced treatment process to purify and reuse cleaned wastewater currently discharged to the ocean from the Sanitation Districts’ A.K. Warren Water Resource facility in Carson. At full capacity, Pure Water would produce up to 150 million gallons of purified water daily – enough to meet the needs of 1.5 million people, benefiting the entire region.
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