Links:
[1] http://admin.indiaenvironmentportal.org.in/news/rivers-polluted-faecal-contamination-pcb-study
[2] http://admin.indiaenvironmentportal.org.in/category/author/ks-sudhi
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-thiruvananthapuram
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kerala
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-monitoring
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ernakulam
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biological-oxygen-demand-bod
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution