The international group of geologists called the main threat which hangs over water consumers in the Indo-Gangetic Basin, Nature Geoscience journal reported.

Residents of Pakistan, India, Nepal and Bangladesh are threatened not by depletion of water resources but their global pollution toxic waste for humans. Approximately 60% of the groundwater at a depth of 200 meters in the basin of the Indus, Brahmaputra and Ganges contains abnormally high concentrations of salts and arsenic.

This makes unsuitable liquid for drinking or agricultural purposes. Satellite observations have shown that in recent years the level of ground waters decreases in the region. This circumstance was considered as one of the main threats for population living on Hindustan.

The field measurements of samples made by scientists in river basins have shown that the level of ground waters on average remains stable. Groundwater levels are falling in the remaining 30% near large cities which subsequently compensated by replenishment from surrounding sources.

A quarter of the world extraction of ground waters used by 750 million people in Pakistan, India, Nepal and Bangladesh falls on the Indo-Gangetic Plain ecosystem.