Drinking water may look cloudy when first taken from a faucet and then it clears up. Why is that?
The cloudy water is caused usually by tiny air bubbles in the water similar to the gas bubbles in beer and carbonated soft drinks. After a while, the bubbles rise to the top and are gone. This type of cloudiness occurs more often in the winter, when the drinking water from the water main is cold and can hold more dissolved air. When it warms up, it releases the air.
