The crisis is mainly being brought about by three specific factors: climate change, pollution and poor farming practices
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/not-only-bengaluru-whole-nation-staring-impending-water-crisis
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karnataka
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water-scarcity
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/monsoons
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources