Current USGS Map

This is the most current map of arsenic distribution in the US produced by the United States Geological Society. It needs to be updated as it relies on very few data points. For example in Vermont only 14 samples were collected, in Massachusetts only 16 samples were collected, and in Rhode Island only 4 samples were collected. The study can be downloaded from the link below.


This image shows the (relatively few) sampling sites in the New England area used to make the current USGS map.




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