Why does my tap water have a white or “milky” appearance?

Don’t worry! The water is completely safe to drink. The milky appearance of your water is caused by air that has been entrapped in the liquid as a result of being under pressure during the water production and delivery process. The air begins to dissipate in the form of tiny bubbles, giving the water a white or "milky" appearance. Once all of the bubbles dissolve, the water will be clear in color. The best way to test this is to fill up a clear glass and set it on your countertop. Watch as the white color begins to clear from the bottom of the glass first. Within a few seconds the bubbles will be gone and you will be left with a clear glass of water. Click Here for More Information on Water Discoloration. This handout is also available in Spanish.

Show All Answers

1. Is my tap water safe to drink?
2. Why does my tap water have a white or “milky” appearance?
3. What causes my water to sometimes look brown or red in color?
4. Why is chlorine added to the water?
5. Why are my dishes, glasses, and cookware being stained with a white film?
6. What are the white flakes clogging my faucets?
7. Whom can I contact if I have questions?