Water management in the house
One important feature of our houses should be a water-tank. The tank is filled by rainwater from the roof, that is filtered before going into the tank and cleaned before being used in the house. This will be the main source of drinking water, although it is good to have mains water as backup in case of droughts.
Grey water from the showers, wash basins and bath gets filtered to take hair and grease etc. out, then stored in a tank at ground level.
From the storage tank the water is slowly released, flowing into the greenhouse, in a 'filter bed'. In this bed, we can grow plants that take out the nutrients and so on from the water. These plants can be used as compost, or perhaps it's a bamboo that grows good canes, or something along those lines.
The filter bed is still placed above the level of the greenhouse, and even a bit higher than the -raised- greenhouse pond, so water can flow from the filter-bed into the pond, and then from the pond into the greenhouse garden
It can either be used to irrigate the greenhouse plants, or be released into an overflow that runs into the home-garden, to the pond there and then on to the large pond in the centre of the Garden.
