A recent independent investigation by Daily Trust uncovered germs in public water samples taken from many states in the country.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/nigeria-harmful-germs-water-samples
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/all-africa
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nigeria
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa