| Summary: | Water distribution networks may see significant savings from reducing nonrevenue
water (NRW). The majority tends to concentrate on the design and
implementation aspects of reducing NRW loss by better controlling leaks, reservoir
overflows, and water theft. In contrast, choices about repairing or modernisation a
water network should be made after examining water losses. The study aims to identify
the possible cause of water loss and compare water losses in water bill systems over
five years. The compared networks share several characteristics, such as the water
intensity indicator value. The analysis results were performed to determine the
percentage rate of water loss in five years. Analysis was done using IWArecommended
water losses indices, such as Non-Revenue Water Level (NRWL);
Geometrical Increase Method was used to determine the future increment in
population and predict the water loss in the future. In many countries, including
Malaysia, the IWA-recommended approach is becoming increasingly popular.
According to the results, water losses in both systems are less than those found in the
data for other networks of a similar type in the literature.
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