Pressure management leak reduction assessment

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The Institute for Sustainable Futures (ISF) was tasked with estimating the actual savings from South East Water’s (SEW) installing pressure reducing valves (PRVs) and the establishment of pressure management zones within SEW’s potable water distribution network. ISF used an algorithm (ISF1) developed to detect changes in flow characteristics in a previous SEW project. The algorithm was able to estimate the average daily saving based on analysis of the consumption for 14 days prior and after the switching on of the pressure management zone (PMA) – as shown in the table below. The algorithm implicitly takes variations in weather and other influences into account in the analysis.
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