I saw this in the men’s room of Bright Angel Lodge at the Grand Canyon . . .
Why is that sign necessary? Were people complaining, “The toilet water in the men’s room tastes a little off“?
“Yes, that’s because it’s sewage. Man, we gotta put up a sign.”
Granted, there’s no bottled water sold in the national park (because of the plastic) but there are other options available before you resort to drinking toilet water.