What impact does water quality have on brewed coffee?

Water quality plays a critical role in the brewing of coffee, significantly impacting both flavor and aroma. When water is not of adequate quality—whether due to excessive hardness, chlorine presence, or impurities—it can impart off-flavors and negatively alter the coffee’s intended taste profile. High mineral content, for example, can lead to a coffee that tastes overly bitter or metallic. Conversely, water that is too soft may not extract enough flavor compounds, resulting in a bland brew. The balance and purity of the water used in brewing are essential for achieving the full potential of the coffee's natural flavors and aromas, emphasizing the importance of water quality in the overall coffee experience.