Milky white water can also be described as cloudy, hazy, soupy or foamy, and is almost always caused by air in the water.
Consistent cloudiness in cold and hot water. Tiny air bubbles in water can give water a cloudy or milky appearance. Water in your pipes is under pressure. Filling a glass of water reduces that pressure and can cause air bubbles to appear in your water which can look cloudy, milky, or carbonated.
Cloudiness in warm or hot water. Air in water lines can sometimes be attributed to warming of cold water lines or overheating water (above 140 degrees) from hot water systems. Milky white water often occurs in spring time when the weather begins to warm.
Back to Troubleshoot Water at Your Tap
Troubleshooting. Collect a glass of water and let it stand for two to three minutes. Any air bubbles will rise to the surface and the milky appearance of water should clear starting from the bottom. Entrained air does not affect the quality of your water.