For decades, El Paso Water Utilities relied solely on two sources of drinking water: surface water from the Rio Grande and fresh water stored underground in the Hueco and Mesilla Bolson Aquifers. The Hueco Bolson contains fresh water and brackish (salty) water. The brackish groundwater is more abundant than fresh groundwater, but requires additional treatment to meet drinking water standards. EPWU began treating the aquifer’s brackish water

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