“Solutions for water efficiency not only focus on reducing the amount of potable water used but also on reducing the use of non-potable water where appropriate (e.g. flushing toilet, watering landscape, etc.).” – wikipedia
“Water distribution network is the term for the portion of a water distribution system up to the service points of bulk water consumers or demand nodes where many consumers are lumped together.” – wikipedia
Reduce, Reuse, Recycle, Repair, Rethink. Five actions that together cover how a household, a city, or a community can meet its water needs with less.” – The Water Project
“Rainwater harvesting is one of the simplest and oldest methods of self-supply of water for households, having been used in South Asia and other countries for many thousands of years.” -wikipedia