Water samples show there are at least 15 sites where bacteriological contamination is at a constant high.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/hyderabad-unsafe-water-supply-putting-children-risk
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-chronicle-telangana
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/telangana
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diarrhoea
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/child-health
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water