[ELI5]How do wells work?

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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

6 Answers

Anonymous 0 Comments

Just like oil reserves under ground, there are also “tables” of naturally occurring ponds or even lakes under the surface. These water sources are naturally clean. Before modern times, and even today, theses reserves were found by using a dowsing rod
https://en.m.wikipedia.org/wiki/Dowsing#:~:text=One%20rod%20is%20held%20in,cross%20over%20or%20swing%20apart.

It’s crazy how dowsing rods work and some people think they’re witchcraft. Lol.

In modern times companies have geologists/hydrologists who can scientifically figure out the best place to dig.
Next a drilling company comes to your property to locate how deep the reserve is. It can be several hundred feet deep and gets very expensive to get to the source. After that a pump is installed to bring it up to the surface and into your home.

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