This Link does not exist in your language, View in: English (en),
Or use Google Translate:  
বাংলা (bn) | Change Language (Change Language)

Over 1.1 billion people lack access to safe drinking water and 2.6 billion people lack adequate sanitation. These are basic human rights. Many low-cost, community-run schemes can be set up to improve health, wellbeing and environmental conditions, and generate some income.