The Kundalika, Amba and Vashishti rivers near Mumbai are polluted with a high content of organochlorines and other persistent organic pollutants, as per the pre-monsoon tests undertaken by the Maharashtra Pollution Control Board (MPCB) on the rivers. The contamination is a result of industries letting out their untreated water into the rivers.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/three-major-rivers-near-mumbai-polluted-mpcb-report
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-news-analysis-mumbai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wastewater-recycling
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-waste
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra