I have heard of a case of a well drilled through unfortunate mineralization and yielding water with so much arsenic the home's residents developed symptoms.
You can also get drops to add minerals, add a very tiny pinch of Himalayan salt, add a remineralizing filter, etc
But you can use that water if you set your system up for it.
That said, if you drink 10 gallons a week, you’re talking 10-30 gallons of waste water depending on the system (mine is 1.5 waste for every 1 gallon). The average bath is 35-50 gallons. It doesn’t seem like a huge impact.
Out of curiosity, how did you have these tested?
I also love keeping glass jars. I use them to drink out of, containing food, distilling, etc. They're way tougher than actual drinking glasses too. Eventually I might toss some in recycling if I've got too many, but I don't buy all that much canned food in the first place so it kinda works out.
In terms of water, I still need to get an RO filter, but in the meantime I've been using a regular water filter and also distilling my own water. Don't believe the hype around distilled water being bad for you, because it's not. RO water is pretty close to distilled anyway, but nobody handwaves about it eating your bones or other such nonsense.
All these chemicals leech into the water from various factories and farms. I imagine dumps have a similar issue. In terms of the environment I’m far FAR more concerned about this than climate change. It’s an imminent risk.
I personally switched to glass containers for storage of food and water. I also use cast iron for my food, non-stick has a lot of chemicals.
It’s slightly less convenient, but easy enough. I also get satisfaction from the cast iron and regularly bake steak and what not.