![](https://www.empa.ch/documents/146981/355614/WaterHome_icon_1.jpg/4784dc7a-9d60-4359-8792-06107eb35a91?t=1448883608000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56982)
WATER
![](https://www.empa.ch/documents/146981/355614/DrinkingWater_icon.jpg/2a2f746f-fa29-4d57-8a3f-3b5ece63155c?t=1448882491000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56982)
DRINKING W.
![](https://www.empa.ch/documents/146981/355614/UsedWater_icon.jpg/d6c35220-116d-424a-8722-d1f98ce3e61d?t=1448882493000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56982)
RECYCLING
![](https://www.empa.ch/documents/146981/355614/BlackWater_icon.jpg/a146782d-2577-4711-bf86-1de15391df8f?t=1448882490000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56982)
BLACK WATER
![](https://www.empa.ch/documents/146981/355614/Filtration_icon.jpg/3ff2a55b-9549-4336-98d4-1b5c5f42207e?t=1449646628000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56982)
FILTRATION
Black Water
Black water (Toilet flushing) is fed into a storage tank which has to be emptied as needed. So far no further treatment for this specific water is foreseen in this project. Nevertheless there exist a lot of alternative for treatment technologies, e.g. wetland construction, composting etc., which are explored in other projects such as the Blue Diversion Toilet (see http://www.bluediversiontoilet.com/).