Abstract:Water supply and drainage engineering is a key component of construction and municipal engineering, and leakage problems have long constrained the safety and service life of engineering use. In order to eliminate leakage hazards from the root, this article takes the entire construction process as the perspective, systematically analyzes the common locations, main hazards, and core causes of leakage in water supply and drainage engineering, conducts optimization research on leakage prevention and control technology around three dimensions: material control, construction technology, and environmental control, and proposes a comprehensive leakage prevention and control plan that can be implemented throughout the entire process. The results show that this scheme can effectively improve the quality of anti-seepage construction, reduce maintenance costs in the later stage, extend the service life of the project, and provide practical basis for the quality control of water supply and drainage engineering construction, helping to promote the high-quality development of engineering construction.