delhi's groundwater has become a cocktail of fluorides, nitrates, heavy metals and pesticides, in short
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/drink-too-much
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi