Where does the water come from? How did people back in the day know there’s water there? How was it safe to drink if it was publicly accessible?
In: Engineering
Ever go to the beach and dig in the sand? The sand near the water, if you dig down even just a few inches, the hole will fill with water.
In a lot of the world, there is water if you did far enough downs. Rain water and other water seeps into the ground, flowing deeper, the same way that ocean/lake water is seeping into the ground near the body of water.
Sometimes it will stop and gather about larger rock slabs, or else under/between them.
Basically you’re digging a hole as deep as you need to, before the water down there starts to fill it up, and then you pump it out.
Search for “earth cross section for wells” and there’s a bunch of cool pictures showing it. Here’s one I found:
[https://www.researchgate.net/figure/Figure-A-2-Cross-section-sketch-of-a-typical-ground-water-flow-system-showing-the_fig1_255948122](https://www.researchgate.net/figure/Figure-A-2-Cross-section-sketch-of-a-typical-ground-water-flow-system-showing-the_fig1_255948122)
Shows two types of wells. Onen that kind of digs until wet earth, the other down until it reaches an aquifer, essentially a giant pool/river of water running underground.
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