It is now possible to directly measure the leakage level in a distribution network using either temporarily installed insertion meters or permanently installed in-line meters.
The measurement of leakage levels is a mature science based on the physical relationship between leakage and system pressure and an understanding of customer use during night hours. This approach, known as Minimum Night-time Flow analysis, has been tested and proved in hundreds, if not thousands, of water distribution networks around the world and is now an industry standard for determining leakage levels.
In order to use this methodology, it is necessary to form hydraulically discrete zones within the distribution network into which the flow of water can be measured. WSO is able to provide unparalleled experience in the measurement of leakage levels using this technique — from designing and setting up the zones, installing the flow and pressure measurement equipment to the detailed analysis that determines the leakage level.