You can't expect to be able to drink from the toilet just anywhere, you know! This is at the Holiday Inn at the Grand Canyon.
I wonder if you can safely drink from the toilets in the more upscale hotels?
Oh wait, probably not, this warning below is on the lawn of one of the rim hotels. This is a light post that the sign is posted by, not a tap. Are they worried we might try to lick the water off the grass when they water it?