Why do we need to reduce the Non Revenue Water in a Water Network of a certain area or City?

First that every Human being or Creature is in need of this Vital Resource, Given this the NRV check is to see that the awareness is generated in everyone of us that this is a Precious asset not to waste... We had a Project in Riyadh spanning 1500km and it is simply to show that How important is Water and How much more important is that each and everyone Gets it in a Fair and Fine manner...

saving water and this leads to saving in power and cost