饮用水安全关系国计民生，我国政府一直高度重视饮用水安全保障工作。改革开放以来，在经济发展活跃、人口高度密集的长三角地区，水体环境污染给饮用水安全保障带来了巨大挑战；经过十余年的发展，长三角饮用水安全保障水平整体显著提升，有力促进了区域协调可持续发展，然而人民群众对水质安全和健康的要求也在逐渐提高，长三角超大城市群饮用水安全保障工作依然面临诸多挑战。由此，本文以长三角典型水源水质特征为切入点，总结了城市饮用水安全保障工作实施成效，从管理和技术两个维度，以及水源、水厂、管网（二次供水）三个方面剖析了饮用水水质进一步提升的现状问题，提出了健全生态补偿机制、协同修订水质标准、发展绿色高效净化技术、创新供水管理模式等措施建议，以期为长三角超大城市群和其他重点区域的饮用水安全保障和区域一体化发展提供参考与借鉴。

The safety of drinking water is related to the national economy and the people's livelihood. The Chinese government has always attached great importance to the safety guarantee of drinking water. Since the reform and opening up, in the Yangtze River Delta area with active economic development and high population density, water environmental pollution has brought great challenges to the safety of drinking water. After more than ten years of development, the overall level of drinking water safety assurance in the Yangtze River Delta region has been significantly improved, which has effectively promoted the coordinated and sustainable development of the region. However, the people's requirements for water quality safety and health are also gradually improving, and the drinking water safety assurance work of the Yangtze River Delta Megalopolis is still facing many challenges. This article takes the typical source water quality in the Yangtze Delta region as a starting point for further analysis, and summarized the achievement of urban drinking water safety assurance of this area. The current situation of further improving drinking water quality was analyzed from the two dimensions of management and technology, as well as the three aspects of water source, water plant and pipe network (secondary water supply). On this basis, several suggestion and strategies has been proposed, which includes improving the ecological compensation mechanism, collaboratively revising the water environment quality standards, developing green and efficient water treatment technologies, and innovating the water supply management model. These strategies can give reference for the safety of drinking water in the Yangtze Delta and the development of regional integration.