本powerpoint演示文稿首先简要概述了城市在保持水和能源平衡方面面临的挑战。增加城市供水的挑战 介绍了住宅用户，以及节水的组成部分，包括减少非收入 水资源（NRW）。本文介绍了NRW及其成本的全球估算，以及世界银行处理NRW方法的变化 水资源挑战，以及基于绩效的NRW的好处 减少成功的例子 基于性能的NRW降低 提供合同。陈述结论如下: 节约用水提高了运营效率； 供应方保护比 需求侧保护； 许多公用事业公司难以有效管理NRW； 基于绩效的NRW削减合同可以有所帮助 公用事业公司 持续减少NRW和 将实际损失节约作为“新”水资源；和 提高收入，降低运营成本。 包括表格、数字。

This powerpoint presentation begins by providing a brief overview of urban challenges to keeping the water and energy balance. The challenge of increasing the water supply to residential users is presented, along with the components of water conservation including reducing non-revenue water (NRW). A global estimate of NRW and its cost is presented, along with changes in the World Bank approach to water resource challenges, and the benefits of performance-based NRW reduction. Examples of successful performance-based NRW reduction contracts are provided. Presentation conclusions indicate the following: water conservation increases operational efficiency; supply side conservation is more cost effective than demand side conservation; many utilities struggle to manage NRW effectively; performance-based NRW reduction contracts can help utilities by sustainably reducing NRW and using real loss savings as a "new" water resource; and, improve revenues, reduce operating costs. Includes tables, figures.