The main insights we are displaying on water balance are:

• Net flow in your network, which we get from the flowmeters:
  Net flow = inlets - outlets
• Efficiency (the percentage of water that actually gets to customers):
  Efficiency = (Consumption / Net flow)*100
• Estimated leakage is calculated from the simulation values of the pressure and junction emitters: Estimated leakage = (junction pressure ^ network emitter exponent) * junction emitter 

We get the consumption from live demands.