Well water question.

33IMP said
Our well water in AZ is terrible, city water has been tested almost as bad. I buy drinking water for the dogs and us, 45 gallons at a time, around once a week.

You need a reverse osmosis system installed under your kitchen sink. You’ll never again have to buy drinking water. Make sure to buy one that will give you the amount that you need. Mine makes around 2 gallons a day, which is more than enough for drinking water. The one below is not what I have (I have a GE model), but they are sold everywhere.
PureDrop 5 Stage Reverse Osmosis Water Filtration System with Extra Pre-Filters, Reduces PFAS, Fluoride, Chloramine, Lead RTW5 - The Home Depot