What you should know about arsenic
http://des.nh.gov/organization/divisions/water/dwgb/well_testing/index.htm
http://www.dartmouth.edu/~toxmetal/assets/pdf/arsenicfactsheet.pdf
http://nhpr.org/post/addressing-arsenic
https://www.youtube.com/watch?v=hi5DfRy01vE
http://nhpr.org/post/whats-your-water-high-arsenic-1-5-nh-wells
https://eailabs.sharefile.com/share#/view/s8150c768de94a789
https://www.youtube.com/watch?v=9zhXPXEwVrI