This is something I've been curious about lately. I have pretty hard water (7-9 grains per gallon) and I have a hard time lathering US made artisan soaps. My water just kills the lather of all of the highly regarded artisan soaps I have tried (MW, Mike's, Stirling). Even if I got them to lather, they were unstable and often dried up on me quite easily. In contrast, I have tried several European made soaps and I had no issue at all. So, here's my question: Do European countries generally have harder water? My theory is that they do, and as such, soap makers have figured out how to make their soaps lather easily with harder water.