I'm in Aberdeenshire and a soft water area; so for my next all grain I'll be adding some DWB water salts. Aiming for a bitter type. The all grains brews so far have had a thin kinda taste. Yes, that could be a lot of things but I'll feel my way slowly with additions/corrections.8 or so all grain brews in and I've still not bothered treating my water and haven't noticed any undesirable effects. Maybe I'm lucky round here with my Surrey tap water!