The environment ministry has identified 150 polluted stretches of rivers across India which need conservation work but interestingly nearly 1/3rd of those polluted river stretches are in Maharashtr
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/13rd-polluted-river-stretches-maharashtra-and-gujarat
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-news-analysis-mumbai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gujarat
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-pollution-control-board-cpcb
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biological-oxygen-demand-bod
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/jawaharlal-nehru-national-urban-renewal-mission-jnnurm
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution