eli5: When people used wells for drinking water, how did they not get sick? Was there some type of filter or was the water just naturally clean?

Question

eli5: When people used wells for drinking water, how did they not get sick? Was there some type of filter or was the water just naturally clean?

In: 6475

Answer 1

I grew up on well water, and I’m middle aged. My mom had it tested regularly. It’s been long enough ago that I don’t remember how often it was, but I do remember her doing the little testing kits and sending them in.

The only thing was we didn’t have water whenever we lost power, because the pump didn’t work without power.