I use my well water for all purposes including of course wine making, however my water is very hard and next week I will be installing water softener. I wonder how this may influance the fermentation, taste etc. Of course I will be able to use hard water if I want to, before the water softener, but it will be an inconvenience. I'm not fermenting anything now. I will be making some Chilean wines around April but this is a slight change in chemistry so I started to investigate.