What is Demand?
Demand is the total volume of water put into the supply
to satisfy the requirements of consumers. It also includes
leakage and any other waste, which may be incurred. The two
main elements of water demand are metered and unmetered
supplies.
What is Metered Demand?
Metered demand represents the volume of potable water
supplied to industry and is charged for on the basis of
measured quantity. Industry also uses a small quantity of
non-potable water and this is indicated separately where
appropriate.
What is Unmetered Demand?
Unmetered element of demand includes domestic supplies,
small unmetered industrial supplies, water used for
operational purposes, public supplies (fire fighting, sewer
flushing, etc.) unmetered standpipes used for temporary
supplies and field troughs in rural areas. Unmetered demand
also includes leakage from the distribution system and
consumers' supply pipes in addition to wastage associated
with any of the above activities or from the burst
pipes.
What is Leakage?
Leakage is the loss of water from the distribution
system as well as consumers' supply pipes. The distribution
system can suffer from bursts or seepage from the pipe.
Leakage also comes from fire fighting, sewer flushing
etc.