HATIRJHEEL project - the recreation spot at the city centre has turned out to be a major cause of pollution at the moment.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/save-hatirjheel-project-becoming-wasteland
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/new-nation-bangladesh
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangladesh
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drainage
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-asia