In my case, I'm Up North in the woods, so I think I'm good.
I don't know the story of your groundwater if it's a big, giant mixture that resides under various farms or whatever. You could probably do some water testing or just get a filter if you'd like. How do you get internet out there in the woods?
I'm in the woods by a lake, but I have neighbors not too far away and I'm about 10 miles as the crow flies from a decent size town. No farmland within a few miles. I trust that the groundwater here has been undisturbed for at least 10,000 years. We have a softener because the water has a bit of iron in it, and an RO unit for drinking water.
I have a filter on my shower and I drink distilled water from plastic jugs in a vitamin mix. I could still be doing better with water, though. I'm renting, so I'm not going to install anything major.
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