Abnormal climate patterns have had a significant impact on water resources in southern Taiwan, prompting collaborative drought response efforts from the central government, local authorities, and private organizations. To optimize the use of limited water resources, the Tainan City Government has been actively developing alternative water sources, such as reclaimed water, to supply industrial water needs and non-human-contact applications. These efforts aim to increase water allocation flexibility, ensuring a win-win for both residential and industrial water users. To gain insights into advanced international wastewater treatment technologies, Director-General Chiu Chung-chuan led an eight-member delegation from the Water Resources Bureau of the Tainan City Government on a study visit to Frankfurt and Kassel, Germany, from April 7 to April 14, 2024. Through hands-on learning and discussions, the delegation sought to deepen its understanding of raw wastewater treatment processes and explore ways to apply these experiences to wastewater treatment facilities in Tainan. Additionally, by integrating circular resource utilization and energy recovery, the initiative aims to support energy conservation, carbon reduction, and the achievement of net-zero emissions.