Agency celebrates Groundwater Awareness Week with continued commitment to groundwater safety Zone 7 is celebrating Groundwater Awareness Week with a $957,752 federal grant award to help fund the Chain of Lakes (COL) PFAS Treatment Facility, a project that will add Ion Exchange (IX) treatment to the existing facility to remove Per- and Polyfluoroalkyl substances (PFAS) from the well’s groundwater supply. Zone 7 has worked actively with Congressman Eric Swalwell and Congressman Mark DeSaulnier to ensure the
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