Millions of air bubbles, the suspended solids, they make the water kind of the milky colour. they stick on the skin of the air bubble. i don't know if you know about there's, like, a dutch beer. i'm from the netherlands. you know, they pull the beer and then the guy goes, like... yeah, skim the top off. that's what we do here. it is our vision that, within ten years�* time, no house, no building will be built without its own decent water recycling system. now, that�*s one way of saving water inside the home. but what about outside? canadian company oto created an app—connected smart spri...