The current study aims to monitor, detect, and assess post meter water leakage in public areas including schools, graveyards, public toilets, parks, and universities. Twenty-two different public sites were selected within the current study and smart water meters of various sizes were installed in these pilot study sites (PSS). A real time monitoring program was conducted to measure the flow rates at these sites at 15-min time intervals for a period of six months in 2019. The flow occurrence was monitored every two minutes within a user predefined period of inspection, and hence a leak warning message is generated once a continuous flow was detected. Minimum water usage was observed during the minimum night flow (MNF) period from 00:00 to 05:00, therefore close monitoring of the MNF at shorter time intervals allows appropriate leakage detection with proper estimation of leakage volumes. High levels of post meter leakages were observed at all the PSS where the total leakage exceeded 58% of the total flow. On-site investigations and close monitoring revealed that significant water leakage volumes in these PSS are taking place due to poor management practices where deteriorated water connections in toilets and water taps are the main contributing factors to the water leakages in most of these PSS. The results indicated that such huge leakage can be resolved at a low cost. A frequency analysis of the monitored flow rates was found efficient in analyzing the suitability of the installed meter sizes.

当前的研究旨在监视，检测和评估公共区域（包括学校，墓地，公共厕所，公园和大学）的仪表后漏水。在当前研究中选择了22个不同的公共站点，并在这些试点研究站点（PSS）中安装了各种尺寸的智能水表。在2019年进行了实时监控程序，以15分钟的时间间隔测量这些站点的流量，为期六个月，在2019年。在用户预定义的检查期内每两分钟监控一次流量的发生，从而检查是否泄漏一旦检测到连续流，就会生成警告消息。在从00:00到05:00的最低夜间流量（MNF）期间，观察到了最低用水量，因此，在更短的时间间隔内对MNF进行密切监视可以对泄漏量进行适当的估计，并进行适当的泄漏检测。在所有PSS处都观察到较高的仪表后泄漏水平，其中总泄漏量超过总流量的58％。现场调查和密切监测表明，由于管理不善，这些PSS中出现大量漏水现象，其中厕所和水龙头的水连接状况恶化是导致大多数PSS中漏水的主要因素。结果表明，可以以低成本解决这种巨大的泄漏。发现对被监测流量的频率分析可以有效地分析已安装仪表尺寸的适用性。在所有PSS处都观察到较高的仪表后泄漏水平，其中总泄漏量超过总流量的58％。现场调查和密切监测表明，由于管理不善，这些PSS中出现大量漏水现象，而厕所和水龙头中的水连接状况恶化是大多数这些PSS中漏水的主要因素。结果表明，可以以低成本解决这种巨大的泄漏。发现对被监测流量的频率分析可以有效地分析已安装仪表尺寸的适用性。在所有PSS处都观察到较高的仪表后泄漏水平，其中总泄漏量超过总流量的58％。现场调查和密切监测表明，由于管理不善，这些PSS中出现大量漏水现象，其中厕所和水龙头的水连接状况恶化是导致大多数PSS中漏水的主要因素。结果表明，可以以低成本解决这种巨大的泄漏。发现对被监测流量的频率分析可以有效地分析已安装仪表尺寸的适用性。现场调查和密切监测表明，由于管理不善，这些PSS中出现大量漏水现象，其中厕所和水龙头的水连接状况恶化是导致大多数PSS中漏水的主要因素。结果表明，可以以低成本解决这种巨大的泄漏。发现对被监测流量的频率分析可以有效地分析已安装仪表尺寸的适用性。现场调查和密切监测表明，由于管理不善，这些PSS中出现大量漏水现象，其中厕所和水龙头的水连接状况恶化是导致大多数PSS中漏水的主要因素。结果表明，可以以低成本解决这种巨大的泄漏。发现对被监测流量的频率分析可以有效地分析已安装仪表尺寸的适用性。