Links:
[1] http://admin.indiaenvironmentportal.org.in/news/arsenic-free-water-supply-west-bengal-2011
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-pollutants
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/arsenic
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water-standards
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/west-bengal