Managing water loss is regarded by PPWSA as the most critical function in its operation because a decrease in water loss results in an increase in billings and income. In 1993 the rate of water loss experienced by PPWSA was 72%. This rate decreased to approximately 8.18% in 2018, as shown in graph below. This achievement over a relatively short time frame resulted in PPWSA earning high praise from a number of international institutions, and PPWSA being awarded a number of trophies and world awards.

The Result of NRW(%) from 1993 to 2018