The natural contamination of drinking water by arsenic needs to be urgently addressed.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/arsenic-poisoning-ganges-delta
[2] http://admin.indiaenvironmentportal.org.in/category/author/s-k-acharyya
[3] http://admin.indiaenvironmentportal.org.in/category/author/p-chakraborty
[4] http://admin.indiaenvironmentportal.org.in/category/author/s-lahiri-et-al
[5] http://admin.indiaenvironmentportal.org.in/category/journal/nature
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/arsenic
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-quality
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangladesh
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/west-bengal
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indo-gangetic-plains
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tubewells
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chemical-fertilisers
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-pollution
[17] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sedimentation
[18] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bihar
[19] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uttar-pradesh