Author | Arantxa HerranzIt is estimated that around 785 million people in the world lack even a basic drinking-water service and at least 2 billion people use a drinking water source contaminated with faeces, transmitting diseases such as diarrhoea, cholera, dysentery, typhoid, and polio. The World Health Organisation figures also estimate that, by 2025, half of the world’s population will be living in water-stressed areas.The lack of health standards, together with future restrictions, could be a lethal cocktail in many regions of the world. In fact, in some areas of the planet, the limit at which water services can be provided in a sustainable manner is rapidly being reached, particularly in arid areas.
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