Water: A Comprehensive Guide for Brewers (Palmer & Kaminski)

Water: A Comprehensive Guide for Brewers, written by homebrew greats Palmer and Kaminski, assembles a wide variety of information focused on the specialized water needs in brewing and makes it accessible to all brewers. The treatment of brewing water can be as simple or complicated as a brewer wants to make it, but any brewer will find things in this book that can make their beer better.

This book, along with the Yeast, Hops, and Malt books, is a must have for any serious brewer.