Why the water from treatment plant turns white after some time?

Water from a treatment plant may turn white due to the presence of tiny air bubbles or dissolved gases, which can occur when the water is aerated or experiences a drop in pressure. This phenomenon is often seen with water that contains high levels of calcium or magnesium, which can precipitate and create a cloudy appearance as well. Additionally, the white color can also be caused by suspended particles or contaminants that were not fully filtered out during treatment. When the water sits undisturbed, these bubbles or particles may settle, leading to a clearer appearance.