non-revenue water
non-REV-uh-nyoo WAW-ter
nɒn ˈrɛvənjuː ˈwɔːtərListen
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Dictionary meaning
the volume of treated water that enters a distribution system but does not generate revenue for the water utility because it is lost through physical leakage from pipes and fittings, used for system operational purposes such as flushing and firefighting, or consumed without payment due to meter inaccuracies, illegal connections, or billing errors; global estimates suggest that non-revenue water losses typically represent 20 to 30 percent of water produced by utilities in middle-income countries and can reach 50 percent or more in cities with aging infrastructure; reducing non-revenue water through pipe rehabilitation, pressure management, active leakage detection, and metering improvements is one of the most cost-effective interventions available to water utilities facing supply constraints
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