I forgot to mention a great hack if distilled water is the only water available - just add a pinch of pink Himalayan salt and voila! Instant electrolytes and minerals!

That's unfortunate about the Berkey not having a fluoride filter option. I wish our municipality didn't fluoridate. I guess I'm going to have to start a stop fluoridating lobby in my community.

Totally understand about not wishing to support those companies commodifying the essentials. I wonder if those soda fountain machines for personal use could make a decent tasting mineral water? I'll have to look into that.
~T