Arsenic concentrations in U.S. groundwater well networks

U.S. map showing arsenic concentrations in groundwater wells

Detailed Description

Map showing median concentrations of arsenic in groundwater well networks across the U.S. Arsenic was detected more frequently and at higher concentrations in wells in the West than in the East. Figure is from USGS Circular 1360, Water Quality in Principal Aquifers of the United States, 1991-2010.


Image Dimensions: 1601 x 1537

Location Taken: US