Water supply and sanitation in Bangladesh

Bangladesh is faced with multiple water quality and quantity problems (such as salinity, groundwater depletion and natural arsenic contamination of groundwater) along with regular natural disasters, such as cyclones and floods. Available options for providing safe drinking water include tubewells, traditionally dug wells, treatment of surface water, desalination of groundwater with high salinity levels, and rainwater harvesting.

Source: Wikipedia — Water supply and sanitation in Bangladesh (CC BY-SA 4.0)