"The World Health Organization estimates that, globally, 1.1 billion people lack access to clean water supplies, and that 2.4 billion lack access to basic sanitation. 1,000 m3 is the per capita annual amount of water deemed necessary to satisfy basic human needs."
"Table 4.1 | Water resources stresses of selected river basins in South Asia 1,329 m3, which is lowest among the three selected basins (Table 4.1 and Figure 4.1)."
"Eleven of the measurements (5. 5%) revealed levels of particulates of more than 25. 0μg/m3, which is the limit recommended by the World Health Organisation (WHO) for external air quality."