Why does our water look like milk coming out of the tap?
This is a common question in the cold winter months. The milky appearance of the water is due to air entrapped in the water. Cold water is able to hold more dissolved oxygen than warm water, and remember that the water is under pressure until it is free of the tap. Therefore, when the water is exposed to the atmosphere, the dissolved oxygen immediately begins to come out of solution or off-gas into the air. This is exactly the same principle that happens with carbonated soda pop or beer. As soon as a carbonated beverage is opened, the dissolved carbon dioxide begins to off-gas. If you simply allow your glass of water to sit on the counter for a minute you will see it quickly clear up and look like normal. The milky color is simply air and poses no risk.

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1. Where can I learn additional details on Chlorine Burnout?
2. Where can I see the Chlorine Burnout PSA?
3. How do I read my meter or check for leak?
4. What happens if I have a water leak?
5. What is a Cross Connection/Backflow?
6. What does the City do about Cross Connection/Backflow?
7. Where can I get bulk water?
8. Why are my dishes spotted?
9. Why does our water look like milk coming out of the tap?
10. What causes water main breaks?
11. How do I know if a main break has occurred?
12. How does the water treatment plant work?
13. Where can I see analysis data for my tap water?
14. What to do when your pipes freeze?
15. How to Check for Water Leaks?