Canada Central USA Brazil South Africa and Australia
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One of the major problems with analyzing shortage is that the total remaining volume of the world’s usable groundwater is little-known.
"We don't actually know how much is stored in each of these aquifers. Estimates of remaining storage might vary from decades to millennia," said Richey. "In a water-scare society, we can no longer tolerate this level of uncertainty, especially since groundwater is disappearing so rapidly."
Researchers pointed to California, where officials imposed mandatory water restrictions in the hopes of reducing water usage by 25 percent.
The rest of the world needs to follow Australia's drought methods. We had major water restrictions now we're developing solar power desalination plants.
