Standing on top of the largest groundwater well in eastern Alameda County, and flanked by twenty-foot cream-colored water vessels, five board members of the Zone 7 Water Agency, a water wholesaler for the tri-valley, cut the ribbon on an advanced groundwater treatment facility Wednesday in Pleasanton. The new technology is called Ion Exchange, which uses positive and negative particles to remove PFAS from ground water. PFAS, or polyfluoroalkyl substances, are widely used, long-lasting chemicals, the components of which break down very slowly over time. Thousands of different PFAS are found in many different consumer, commercial, and industrial products, like hiking gear and non-stick cookware.

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