This is a duplicate of an earlier discussion: https://news.ycombinator.com/item?id=17166132
> It is also planning a pilot to help tenants reuse so-called grey water - the water from bathroom sinks, showers, baths and washing machines.
So two different sewer systems?
This is a duplicate of an earlier discussion: https://news.ycombinator.com/item?id=17166132