该powerpoint演示文稿首先提供了2002年的典型国家水损失标准，以及实际损失和泄漏的比较 损失百分比。泄漏管理策略 目标 实现 经济水平 泄漏风险 （ELL）以及目标水平ILI、实际损失管理绩效类别，以及不同实际损失减少的影响 活动。提出的挑战包括: 不可避免的年度实际损失； 什么是非收入水？； 泄漏计算的经济水平；和 如何解决维修成本问题？包括表格、数字。

This powerpoint presentation begins by providing typical state standards for water loss in 2002, along with a comparison of real loss leakage and percentage losses. The Leakage Management Strategy objective of achieving the economic level of leakage (ELL) is presented, along with the Target Level ILI, Real Loss Management Performance Categories, and the Impact of Different Real Loss Reduction Activities. Challenges presented include the following: unavoidable annual real losses; What is Non Revenue Water?; economic level of leakage calculation; and, How to Address Repair Costs? Includes tables, figures.