本文描述了欧洲和美国研究人员在开发现代供水系统信息系统方面的共同努力。葡萄牙里斯本市的水务公司EPAL正在部分赞助当前阶段的开发。本文首先概述了信息系统的目标，然后在EPAL中简要描述了该组织。然后解释了在开发系统的系统分析和建模中使用的面向对象方法。

A joint effort between European and American researchers in the development of a modern information system for water utility system is described in this paper. The water company EPAL for the city of Lisbon in Portugal is partially sponsoring the current phase of the development. The paper first outlines the information system objectives, followed with a brief description of the organization in EPAL. An object-oriented approach in the system analysis and modeling of the developing system is then explained.