Out of 146 samples of drinking water collected from government schools in Sangrur district, 57 have failed laboratory tests.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/39-water-samples-govt-schools-sangrur-fail-safety-test
[2] http://admin.indiaenvironmentportal.org.in/category/author/sushil-goyal
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/tribune-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sangrur-d
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fluoride
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality