It took the British Government almost two decades to clean up and revive the once
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/will-clean-yamuna-2015-assures-govt
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/pioneer-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/yamuna
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cse
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi-jal-board-djb
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sewage
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sewage-treatment-plants-stp
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-waste
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-habitat