What color is Calcium Magnesium in water?

The correct answer indicates that Calcium and Magnesium typically appear in water as either aqua blue or white. When these minerals are present in solution, especially in higher concentrations, they can impart a distinct coloration due to various factors, including their interactions with light and the presence of other dissolved substances.

Calcium carbonate, a common form of calcium in water, can create a white or cloudy appearance when precipitated. Similarly, magnesium compounds can also influence coloration based on their concentration and the water's specific characteristics. In some contexts, the presence of these minerals may not strongly color the water, potentially giving it a more aqua blue hue, especially in well-balanced conditions where they are dissolved rather than precipitated.

Understanding how certain minerals affect the visual clarity and color of water can be crucial for water quality assessments, treatment processes, and regulatory compliance in water systems.