The Tamil Nadu Pollution Control Board (TNPCB) has issued notices and is monitoring the mercerising units located on the banks of the Noyyal in the district.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/efforts-needed-stop-pollution
[2] http://admin.indiaenvironmentportal.org.in/category/author/m-soundariya-preetha
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-chennai
[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/tiruppur
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/textile-industry
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cauvery
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karur-d
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-pollution
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/total-dissolved-solids
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution