Dumping of solid waste, saline water intrusion are main factors, says survey
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/poor-water-quality-manimala-river-basin
[2] http://admin.indiaenvironmentportal.org.in/category/author/t-nandakumar
[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/manimala
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pathanamthitta-d
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-disposal
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution