One of the emerging sectors in Coimbatore is packaged drinking water, with the city having more than 60 units.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/packaged-drinking-water-manufacturing-units-mushroom-city
[2] http://admin.indiaenvironmentportal.org.in/category/author/gayathri-balasubramanian
[3] http://admin.indiaenvironmentportal.org.in/category/author/jennifer-soorya
[4] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-chennai
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bottled-water-industry
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/coimbatore-t
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources