It’s a truly dreadful irony: for many of the 400 million people in sub-Saharan Africa who lack access to even a basic water supply, there is likely to be a significant reserve in aquifers sitting just a few metres below their feet.

Groundwater – the water stored in small spaces and fractures in rocks – makes up nearly 99% of all of the unfrozen fresh water on the planet. Across the African continent, the volume of water stored underground is estimated to be 20 times the amount held in lakes and reservoirs.

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Source: The Guardian

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