The presence of a milky or cloudy appearance in water produced by an alkaline water machine or pitcher, often manifesting as a white haze, is generally due to dissolved gases, particularly hydrogen. The electrochemical process involved in creating alkaline water can liberate hydrogen gas, which, when supersaturated, forms microscopic bubbles that scatter light, giving the water a white or cloudy look. This is similar to the effect seen when tap water is initially poured into a glass.
This temporary cloudiness is usually harmless and does not affect the water’s alkalinity or other beneficial properties. The hydrogen gas produced is often associated with potential antioxidant benefits. Historically, alkaline water production methods have sometimes resulted in increased dissolved gas content, leading to this visual effect. Users often perceive it as an indicator that the alkalization process is indeed occurring.
