Globally, 2.6 billion people lack access to safe and clean toilets. For example, 92 per cent of the population in Afghanistan don't have proper sanitation; 67 per cent in India as well.
A gramme of human faeces contains 10 million viruses, one million bacteria, 1,000 parasite cysts and 100 parasite eggs
Diarrhoeal diseases, caused by a lack of sanitation and water, are the second biggest killer of children
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/global-aid-sanitation-southward-bound
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waterborne-diseases
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/toilets
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sanitation
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/un
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/developing-countries
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/statistics