In 2021, Taiwan experienced an unprecedented water shortage in 56 years. The crisis put discussions on optimizing water resource planning onto the map again. The 2050 Zero Carbon Emission Policy, the corporate sustainable goals ESG (Environment, Social and Governance), and SDGs (Sustainable Development Goals) embraced by governments all over the world are all closely related to the management and treatment of water resources nowadays. Reliable and stable water supply is no longer the sole concern of the latest water management and reclamation technology development. Instead, the attention is shifted to giving back to the environment and the society on different levels.