本文描述了为法国人口稠密的法兰西岛地区（包括巴黎大都会区）提供优质饮用水的复杂性和挑战。讨论了以下主题:供水来源和私营公司和水务部门对供水服务的管理；确保安全和灵活供水的措施；自动监测和控制技术，以监测水质和优化处理过程；自动细菌学监测；以及澄清、絮凝和多级臭氧氧化的处理技术。包括26个参考文献、表格和图表。

This article describes the complexities and the challenges of providing high quality drinking water for the densely populated Ile de France region in France, which includes the Paris metropolitan area. The following topics are addressed: sources of water supply and management of water service by private firms and water authorities; measures to ensure safe and flexible water supplies; automated monitoring and control techniques to monitor water quality and optimize treatment processes; automated bacteriological monitoring; and treatment techniques for clarification, flocculation, and multistage ozonation. Includes 26 references, table, figures.