Water is arguably the most critical and least understood of the foundation elements in brewing beer. Water: A Comprehensive Guide for Brewers, third in Brewers Publications’ Brewing Elements series, takes the mystery out of water’s role in the brewing process. The book leads brewers through the chemistry and treatment of brewing water, from an overview of water sources, to adjusting water for different beer styles, and different brewery processes, to wastewater treatment. The discussions include how to read water reports, understanding flavor contributions, residual alkalinity, malt acidity, and mash pH.