Scotch whisky was originally called uisge beatha, a Scottish Gaelic phrase meaning “water of life.” And few people understand the important role that water quality plays in the delicate whisky-production process better than Brian Kinsman, malt master for Glenfiddich, a family-owned distillery since 1887 and the producer of the most award-winning single malt in the world. From the Robbie Dhu spring in Dufftown, Scotland, which supplies all of the water used in making Glenfiddich whisky, to the rivers in the Uni…