One has to wonder what is holding back this kind of innovation – is it health or simply convention? The idea is simple: combine the two water-using items found in any men’s bathroom.

Yeongwoo Kim designed it with the utmost aesthetic simplicity, and it speaks for itself: the water clearly recycles to add in flushing the toilet – semi-opaque frosted glass hides the first sequence’s function from view as one leans forward to wash hands.

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The result is a graywater reuse system that requires fewer pipes but also saves space, as the same vertical area can be used both for urinating and hand washing, presuming, of course, that the hygiene of such proximity does not prove to be a problem.