Let’s put this in perspective. If the water is yellow but clear and odorless, you are 99% fine. It’s probably just you needing a glass of water or a vitamin overdose. Flush it again after 30 minutes. If it goes away, congrats—you just solved the mystery.
If the water is cloudy, smelly, or bright orange/red, call a plumber. Also call one if everyone in the house has yellow water at the same time, and you haven’t all suddenly joined a sports drink challenge. Remember: your toilet is a champion of passive information. It doesn’t care about your ego. It just tells the truth in color. And if that color looks like a taxicab, you know the drill.
Now go drink some water. Your kidneys are trying to send you a memo.
