We are looking to build a home with a footprint of 241m2, and I want to have a rain water harvesting system to supply all of our household water (with mains back up) but I am finding it really hard to find advice online on tank capacity
We will be using a grey water filtration system to take care of most of the garden watering, so our household usage will be family of 4 (planning ahead) with water saving appliances and tapware
We are in the outer eastern suburbs in Melbourne
Also, I am not sure what sort of filter to use. I have heard that a 3 phase UV filter is a good idea...