In response to climate change and the increasing occurrence of extreme weather events, the irregular distribution of rainfall has become more pronounced, with shorter and more concentrated periods of precipitation. This has exacerbated water scarcity and flooding issues, posing significant challenges to water resource management. Additionally, industrial development and rising living standards have led to a growing and urgent demand for water resources. However, traditional water source development is not only difficult but also costly, making the exploration and stable supply of alternative water sources a key issue in water resource management. To achieve stable industrial water supply and advance sustainable development through a circular economy, the central and local governments have joined forces to promote wastewater reclamation and reuse initiatives. Based on comprehensive feasibility assessments, the Executive Yuan approved the construction plan for the Rende Reclaimed Water Plant in 2020. This project serves as a model for alternative water resource implementation, ensuring a stable water supply for enterprises in the Tainan Science Park, thereby fostering continuous industrial growth.