Squeezing the box

The technique known as 'squeezing the box' consists of identifying payback periods of individual leakage management initiatives, and implementing those with the fastest payback on a priority basis. International experience shows that the shortest payback periods (or lowest $ spent per ML saved) usually arise from leakage management initiatives associated with speed and quality of repairs, pressure management and active leakage control. As these initiatives are implemented, the Annual Real Losses should gradually reduce (over a period of 3 to 5 years), and when no further cost-effective initiatives can be identified, the Infrastructure Leakage Index should stabilise at a value that reflects the inherent condition of the distribution infrastructure.