In a pinch? Sure. Use distilled water to make coffee? You’ll get a flatter brew—it extracts differently. Use tap water in your steam iron? You’ll get mineral gunk that clogs the vents. So no, they’re not interchangeable.
Think of it like shoes: tap water is your everyday sneakers. Distilled is your dress shoes—great for specific jobs, but you won’t hike a mountain in them.
