A report by the Comptroller and Auditor General (CAG) has brought to light the unhygienic conditions that prevail at major stations like Howrah and Sealdah as well as on trains.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/howrah-station-sealdah-dirty-cag-report
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-kolkata
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/howrah-d
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/west-bengal
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sanitation
[6] http://admin.indiaenvironmentportal.org.in/thesaurus/comptroller-and-auditor-general-india-cag
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rail-transport
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/plastics
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solid-waste