Measuring the hydraulic functionality of PPP-managed water supply infrastructure in Madagascar

This paper presents results from an on-going study that is aimed at developing continuous, objective tools for evaluating the performance of water system functionality. An additional goal of this study is to explore external factors that influence sustainability in order to better understand the effectiveness of PPP managed water systems. Pressure transducers were installed in water system storage tanks to continuously measure water levels and allow determination of supply/demand flows, and functionality in terms of water delivery was assessed using tank level thresholds and service provision levels of access. Both systems studied exhibited high functionality despite different contextual factors, and metered data was used to verify consumption estimates. The objective of this paper is to demonstrate the use of monitoring tools such as this to better inform planning, needed to achieve universal access.