The nrw issue Kwlog

According to AWWA and IWA,
the world water utilities are losing more than 50 billions m3 of water per year,
generating huge unnecessary CO2 emissions:

Real losses – Leakages
Apparent losses
End customers losses
Water infiltrations into sewage systems

System Input Volume	Authorised Consumption	Billed Authorised Consumption	Billed Metered Consumption	Revenue Water
			Billed Unmetered Consumption
		Unbilled Authorised Consumption	Unbilled Metered Consumption	Non Revenue Water
			Unbilled Unmetered Consumption
	Water Losses	Apparent Water Losses	Unauthorised Consumption
			Custormer Meter Inaccuracies
		Real Losses	Leakage on Transmission and Distribution Mains
			Leakage and Overflows at Reservoirs
			Leakage on Service Connections up to Metering Point