The Eco Bath concept is simple: use the waste water from the sink to flush the adjoining toilet. The execution is nothing less than stylish. Though compact, the Eco Bath’s water tank is comprised of two compartments, one that holds drainage water from the adjoining sink and one that contains fresh water in case the need to flush occurs before the grey water tank is full.

Here's how it works. There are two levers, one for each compartment. An LED light provides information about available water levels. If grey water abounds and there is enough to flush with the recycled water, the light is green. If not, the light is red and a fresh flushing option is available. It’s as simple as that.

Though the value of Jang Wooseoks design is certainly rooted in it's function, the style elements of the Eco Bath are what put it firmly over the top. With its clean lines, thin components and the rounded edges of its rectangular shapes, the Eco Bath is the best looking grey water recyling system we've come across so far. 

Eco bath diagram
© Jang Wooseok
Eco bath
© Jang Wooseok
Eco bath
© Jang Wooseok
Eco bath
© Jang Wooseok
Eco bath
© Jang Wooseok

It's also important to know how to maintain toilets and how to stop toilets running and wasting water by changing the flapper.