Even as concerns arise about the threats hydraulic fracturing poses to water quality and human health, a new study released yesterday finds that the water demands of the “fracking” process are adding considerably to localized water depletion, especially in parts of Texas, Colorado, and California. (Vote and comment: “How Has Fracking Changed Our Future?“)

Nearly half of the fracking wells in operation since 2011 are located in regions with high or extremely high water stress, according to the report by Ceres, a non-profit organization that works with investors and businesses to promote more sustainable practices.

Competition for water between cities, farms and industries is already tight in those water-stressed areas, posing risks of supply disruptions during