What do we call water containing high concentrations of calcium, magnesium, or ion?

Water containing high concentrations of calcium and magnesium is referred to as "hard water." Hard water can also contain other minerals, such as iron. The high mineral content can lead to scaling in pipes and appliances and can affect soap's effectiveness. If the water has high concentrations of other specific ions, it might be referred to by the specific ions present (e.g., "saline water" for high salt concentrations).