Could you tell me some more information about it? Let’s talk in PM

Oh, I don't know what could help you. Try to filter the water before drinking it. My father fills a pitcher with water and puts some black stones in the bottom. He had read somewhere that it was such stones that helped to filter water. I certainly didn't argue with my father, but I use a more humane way to do it.  I have a  drinking water system, which also hasn't the most pleasant taste. I use an alkaline water pitcher. In the evening, I fill this jug to the brim, and at night it's filtered. In the morning, the water doesn't have any unpleasant tastes.