There looks to be no reprieve for River Noyyal from pollution with industrial effluents still finding its way into the watercourse in large quantities especially when the skies open up.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/continuing-effluent-discharge-river-noyyal-worries-farmers
[2] http://admin.indiaenvironmentportal.org.in/category/author/r-vimal-kumar-0
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noyyal
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/farmers
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/common-effluent-treatment-plant-cetp
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution