It is commonly thought that old groundwater cannot be pumped sustainably, and that recently recharged groundwater is inherently sustainable. We argue that both old and young groundwaters can be used in physically sustainable or unsustainable ways.

中文翻译：

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反思地下水时代

通常认为，旧的地下水不能被可持续地泵送，而最近补给的地下水本质上是可持续的。我们认为，老旧的地下水都可以以物理上可持续或不可持续的方式使用。