New innovation turns waste water into drinking water in an hour
A pioneering water facility in California recycles up to 130 million gallons of treated sewage each day—enough to supply drinking water to one million people. Using a three-step purification process—microfiltration, reverse osmosis, and ultraviolet light with hydrogen peroxide—the water is cleaned to a level even purer than typical tap water. Though energy-intensive, the system offers a sustainable alternative to imported water and helps recharge underground aquifers while preventing seawater intrusion. The recycled water is primarily used to replenish local supplies, with some directed to the coast as a protective barrier. As drought and climate change strain traditional sources, this approach provides a reliable, cost-effective solution. Recent state regulations now allow purified wastewater to go directly into drinking water systems. The model is being adopted in other U.S. regions, showing that recycled water can be safe, clean, and essential for future resilience. As one official put it, “Everything’s going to have to be reclaimed and recycled.” Learn more about this initiative.
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