I would call the water department and get a listing of what is in the water. It seems dangerously high for consumption. There may be something in the water that is volital. You might try letting it sit for 24 hours in a vat, may lower the PH. RO will take most things out and soften the water, or you may need some resins or something instead. It depends on what is making it so high. In my opinion with what you are telling us RO may be your only answer because of the variations in the water chemistry.
