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World water development report 2022: groundwater - making the invisible visible

While groundwater accounts for 99 per cent of all running freshwater on Earth, it is often undervalued, mismanaged, and overexploited, according to this report published by the UNESCO.

Groundwater accounts for 99% of all liquid freshwater on Earth. However, this natural resource is often poorly understood and consequently undervalued, mismanaged and even abused. According to the latest edition of the United Nations World Water Development Report published by UNESCO, the vast potential of groundwater, and the need to manage it sustainably, can no longer be overlooked.