Think of a freshly poured soda. Those bubbles rise, right? Well, your tap water can get the same fizzy look if air gets into the pipes. It's especially common when the water company repairs a main line or flushes the system.
Pressure changes are the real pranksters here. When water is under high pressure, air squeezes into it like a secret. Then, when it flows out your tap at lower pressure, all that air escapes at once—poof!—creating billions of tiny bubbles.
How do you test this theory? Fill a clear glass, set it on the counter, and watch. If the water clears from the bottom up within a minute or two, it's just air. You're good. Drink up, bubble buddy.
