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So how does the arsenic get into the water? In some cases, the arsenic in the water comes from human activities like mining and processing metals or through use of arsenic on farms. These sources were described in the “where arsenic comes from” section. In mining, excavated rock that does not contain useful quantities of […]https://umaine.edu/arsenic/wp-content/uploads/sites/369/2015/03/hydro_cycle.gif520387