Water isn't yellow with a nasty ammonia smell to it. That is what is usually on the floor around the toilet.

I hate everything about public restrooms. The shit left behind by some moron who doesn't know how to flush; the pubic hairs on the toilet seat; the nasty smell that lurks when they are not cleaned several times throughout the day. I try my best to stay out of them but sometimes when you gotta go you gotta go.