A few months ago my friend took a trip to Peru. While brushing her teeth one evening in a new hotel room she noticed that light was coming in through the drain! She took a peek under the sink and saw that a clear plastic soda bottle was being used as the drain from the sink. I’m sure this wouldn’t pass plumbing code in most places. Not even sure if there’s a water trap underneath it. Yuk!
Photo credit C. Beimborn 2011.