Circle of Blue [1] has created a helpful interactive infographic about where arsenic comes from, how human health is affected, and how each state stacks up in terms of public water systems in violation of the federal standard for arsenic.

Circle of Blue [1] has created a helpful interactive infographic about where arsenic comes from, how human health is affected, and how each state stacks up in terms of public water systems in violation of the federal standard for arsenic.
Links:
[1] http://www.circleofblue.org
[2] http://www.circleofblue.org/waternews/2011/world/infographic-an-elemental-concern-arsenic-in-drinking-water/
[3] http://www.rcap.org/taxonomy/term/858
[4] http://www.rcap.org/taxonomy/term/845
[5] http://www.rcap.org/taxonomy/term/859
[6] http://www.rcap.org/taxonomy/term/607
[7] http://www.rcap.org/taxonomy/term/38
[8] http://www.rcap.org/taxonomy/term/699