I’ve seen it before. It’s some trendy thing I don’t get because don’t you have to wait for the tank to fill back up before you can wash your hands with water more than just a trickle?
It’s pretty common in Japan actually for a few reasons. One being space saving. And you got it the wrong way around the gray water from washing is used to flush.
I’ve never seen a sink behind the toilet before. It does make a nice little shelf for your comic books and chocolate milk though.
I’ve seen it before. It’s some trendy thing I don’t get because don’t you have to wait for the tank to fill back up before you can wash your hands with water more than just a trickle?
It’s pretty common in Japan actually for a few reasons. One being space saving. And you got it the wrong way around the gray water from washing is used to flush.
https://www.snopes.com/fact-check/sink-toilet-japan/