Sound levels at three major spots in the city are up to 75 decibel, above the maximum permissible limit of 50 decibel, according to a study.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/slight-improvement-city%E2%80%99s-sound-pollution
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-kochi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kerala
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kochi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment