Links:
[1] http://admin.indiaenvironmentportal.org.in/news/says-rivers-goa-not-very-sullied
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/herald-panjim
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/goa