– Pressure Management in Water Distribution Systems: Evaluation of the Benefits of Various Control Modes

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Several solutions for pressure management are proposed by IWA in order to respond to the objectives of reducing water losses in water distribution systems (WDSs). One of the recommended solutions is to continuously adjust the pressure settings of pressure reducing valves (PRVs). These valves offer the possibility of operating the WDSs according to one of the following control modes: i) fixed control; (ii) time-based control; iii) reactive real-time control; and (iv) predictive real-time control. The evaluation of the performance of the different pressure control modes was carried out by hydraulic modeling for a few sectors of Canadian WDSs. The comparison between the performances of the various pressure control modes was based on the potential benefits in terms of leakage rate reduction, for different network characteristics.