The gravest threat to groundwater in India isn’t over-exploitation but arsenic and salt contamination.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/water-table-rises-ganga-basin-so-does-salinity
[2] http://admin.indiaenvironmentportal.org.in/category/author/jacob-koshy
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-quality
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/haryana
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uttar-pradesh
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indian-institute-technology-iit
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution