Consumption of treated water

The recycled water is used for irrigation, flushing toilets, washing vehicles, solar panels, animal houses and utensils and watering the plants.

National Chiayi University has established an integrated Treated Water Utilization System to maximize the reuse of processed water across its campuses. The program is jointly managed by the Environmental Protection and Safety Management Center and the Office of General Affairs, ensuring continuous monitoring, maintenance, and performance evaluation of treated water consumption.  The treated water mainly comes from three key sources—general wastewater, livestock wastewater, and rainwater harvesting systems. General wastewater from campus buildings is treated and reused for toilet flushing, plant irrigation, and washing facilities such as vehicles and solar panels. Rainwater harvesting systems supply treated water for aquaculture and horticultural irrigation, while rainwater stored beneath the Library’s raft foundation is disinfected and reused for toilet flushing.

Through these combined measures, over 75% of total campus water consumption is supplied by treated or recycled water sources (82.94%). This system greatly reduces dependence on municipal water supply, promotes water resource circularity, and supports SDG 6 (Clean Water and Sanitation) and SDG 12 (Responsible Consumption and Production).