That cloudy, white appearance has a boring, wonderful explanation: tiny air bubbles. Think of your tap water like a shaken-up soda bottle. When water is under pressure in the pipes, air gets forced into it, dissolving like bubbles in a can of cola.
When you open the faucet, the pressure drops, and that air suddenly escapes. Those millions of microscopic bubbles are what make your water look milky white for a few seconds. It’s not gunk, germs, or ghostly interference — it’s just nature’s little party happening in your glass.