So next time you see that milky, mysterious glass, don't scream. Do the One-Minute Test. If it clears, you're drinking sparkling water with a better PR team. If it doesn't, you might need a simple water filter or a plumber's number on speed dial.
Either way, you're not alone. Billions of people have panicked over the exact same thing. It's practically a rite of passage. Now go enjoy that crisp, clear glass of water—bubbles or not. You've earned it, you paranoid legend.