56% of samples highly polluted; filtration not up to mark.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/25-sites-fail-groundwater-test56-samples-highly-polluted-filtration-not-mark
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-groundwater-board-cgwb
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fluoride
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticides
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/yamuna
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-pollution
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chemical-fertilisers