The C K Choi Building at UBC is the first all-Clivus Multrum large-scale office-building project in Canada.
In Vancouver, British Columbia, a 30,000 sq. ft. office complex, utilizes composting toilets and urinals for human waste disposal. The new building, which houses The Institute of Asian Research, is not connected to the city's sewer system. As well, a subsurface, greywater recycling system with phragmite (tall grasses) plant varieties, cleanses the greywater which is then used for on-site irrigation.
There are a total of 5 Clivus Multrum Model M28 Composters at the Choi Building...with ten flushless toilets and, in addition, several flushless, trapless ventilated urinals attached to them. Each of these Clivus Composters has an annually user capacity rated at 45,000 visits. Therefore, the total annual rated capacity for the Clivus systems there is 225,000 visits. All of the Choi building's washwater (greywater) is processed on-site separately.