@msolga,
Silly, indeed. The city official responsible agrees, but legal types are wary.
I argued for a sticker on the toilet tank reading "non-potable."
I think what irked me most was the hotel people saying they agreed with the concept of "conserving" and even "harvesting" water but then they came up with lame excuses for why this project should not be innovative in actually doing it.
25% of household water use goes down the toilet. In a hotel, I suspect 60% also goes down the shower.
They said it was too expensive to build recycling in. I know a bit about numbers. They are wrong.
They claimed the public, the uninformed public, would be confused. Not so, we said. I would love to don a hard hat and get into the guts of a new hotel and see how things like water recycling, solar and geothermal work.
They did not share my enthusaism.