Sinking borewells is one of the main causes of noise pollution.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/palike-wakes-noise-air-pollution
[2] http://admin.indiaenvironmentportal.org.in/category/author/niveditha-jain
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-herald-bangalore
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karnataka
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangalore-t
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water-scarcity
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment