Why does some coastal cities/counties have a problem of lacking drinking water?

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Like California and South Africa, isn’t the principle of water distillation relatively easy? evaporating from one end and cooling it from the other so that it becomes liquid again, leaving all the salt and pollutants behind.

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Anonymous 0 Comments

Desalination is a *simple* idea but it is not physically *easy* because of the amount on energy it requires.

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