MUMBAI: The main sources of air and noise pollution in the state, especially in Mumbai, are vehicles while domestic sewage has been found majorly responsible for water pollution in rivers.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/blame-vehicles-air-pollution-few-convert-cng
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-mumbai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/maharashtra
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mumbai
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pune
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nagpur
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution