<p>This study proposes an integrated performance evaluation system to prioritize the repair and reinforcement of water distribution systems (WDSs). Recognizing that aging infrastructure poses risks such as pipe failures and water quality degradation, the integrated performance evaluation system offers a comprehensive assessment approach, addressing the limitations of traditional evaluation methods that are constrained by time and cost. The system integrates both direct and indirect performance evaluations, focusing on factors such as pipeline aging, hydraulic stability, and water quality safety. The system also evaluates hydraulic stability by simulating pressure fluctuations and water quality through the analysis of water residence times under varying demand conditions. To systematically determine repair and reinforcement priorities, the analytic hierarchy process is applied, assigning weights to each evaluation factor based on its relative importance. By simulating hypothetical abnormal scenarios, such as pipeline failures, the system estimates potential damage and the risk to water supply blocks. These evaluations provide valuable insights into the vulnerability of different sections of the WDSs, supporting informed decision-making for maintenance planning. The integrated approach of the integrated performance evaluation system not only ensures a more reliable and data-driven prioritization process but also enhances preparedness for abnormal system conditions. The framework is validated through applications in real-world water distribution networks, demonstrating its effectiveness in guiding resource allocation and maintenance efforts for long-term system stability.</p>