It’s important to note that the water in your toilet bowl is not the same as that from your faucet. Toilet water follows a different plumbing route, so there’s no crossover.
The cleanliness of your bathroom sink can affect water quality. A germ-laden sink could contaminate the water, so regular cleaning is essential.
While it’s typically safe to drink water from the bathroom, consider the age of your plumbing and the cleanliness of your bathroom. If your plumbing is very old or your bathroom lacks cleanliness, it’s better to stick to the kitchen tap.
In summary, as long as your plumbing is well-maintained and your bathroom is clean, feel free to hydrate from the bathroom tap. Just be careful not to confuse your glass of water with mouthwash for a minty surprise!