Water Distribution Systems Efficiency Assessment Indicators - Concepts and Application

The measure of performance of any water utility is based on the efficiency of the water distribution systems in place. Lately, performance indicators and benchmarking methodologies are the most important approaches used in assessing water distribution systems efficiency. This paper reviews water distribution systems assessment indictors and assesses their application to developing countries. The main indicators in use world over are either financial or operational. It was discovered that many utilities in developing countries do not adequately use these assessment indicators in their water loss management strategies. In a case study of the City of Harare, Zimbabwe, it was established that the city has 53 % Non Revenue Water Management systems efficiency after applying non revenue water assessment indicators.