11. Pakistan
Waterborne diseases are a norm in Pakistan, and as much as 40% of deaths that occur in the country are directly or indirectly attributed to water pollution! As per our source, 62% of urban and 84% of the rural population are using untreated water, making it no surprise that hospitals are teeming with diarrhea cases on a daily basis. Furthermore, like Bangladesh, arsenic contamination in water supply exposes around 60 million people in the country.