Great!
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.
The opportunity that groundwater presents for increasing access to water is widely recognised, with more than half of the global population already believed to be relying on it for drinking water.
When you add the ability of solar energy to power the necessary infrastructure and the fact that groundwater supplies are much more resilient than surface water during drought, the potential for harnessing this water source to provide a clean and regular supply to communities in chronic need comes into focus.
So, that’s another problem advamncing tech has solved. Aren’t we the lucky ones.
but it must be sustainable and fair
Typical bleedin’ Guardian.
There’s a bit in one of the Reacher novels. He’s down by the Tx/Mx border. Land’s dried out. Old V8 engines (the old 5.7 litre hemis I guess) appear regularly along the roadside. Used to be used – back in the days of fixed and low oil prices – to pump up the groundwater to irrigate. Rising oil prices stopped that decades back now it’s just scrub, near desert.
I realise that I am weird but reading that bit of it – while waiting for the next punch up in the story – my thought was, well, wouldn’t solar powered pumps solve that? And put that land back into agricultural production?
You know, buy southern TX land?