Wall Water Features

What is a list of water saving features in a home?

So if you are building a house, what are some obvious or non-obvious water saving features? e.g: Water tanks, using half-flush, 4 minute showers, ect.

Public Comments

1. id say youve pretty much nailed it with those there, that will save alot
2. Rain water harvesting tank to collect water which can be used to flush the toilet. I saw it on an episode of DIY SOS.