Tap water taste and hardness linked to mineral content

Changes in tap water taste and texture are often linked to mineral content or plumbing conditions. Fluctuations in minerals such as calcium, magnesium, and iron can cause metallic, bitter, or chalky flavors. Additionally, municipal water treatments using chlorine or chloramine may result in a stronger chemical taste or smell during certain seasons or maintenance periods.

Hard water, characterized by high concentrations of dissolved calcium and magnesium, is a common issue affecting an estimated 75% to 85% of U.S. homes. While hard water can cause aesthetic problems—such as white mineral buildup on faucets, water spots on glassware, and filmy skin after showering—it is generally considered safe to drink. According to experts, hard water is an aesthetic concern rather than a contaminant, and the minerals involved can actually contribute to daily nutritional intake.