Large number of people in Kanakapura are migrating to Bangalore and other cities of late.
Reason: Sewerage water from Bangalore has been flowing into the town and contaminating the ground water.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/water-contamination-forcing-migration
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-herald-bangalore
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sewage-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/migration
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karnataka
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangalore-d
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangalore-t