Water Pollution Prevention and Treatment Guidelines and Wastewater Management

Water resources required for product manufacturing, including ultra-pure industrial water and steam, are mainly used for equipment heating, heat exchange, heat recovery, equipment cooling, power generation facilities, etc., so that raw materials can be used to produce high-quality products based on related manufacturing processes. The Company's wastewater is treated by its own wastewater treatment plant.

COD discharge per unit of product was 0.016 kg/ton and SS discharge per unit of product was 0.0029 kg/ton, stably fluctuating compared with the past few years. This shows that biological treatment of wastewater has been mostly stable, but we will continue to improve the performance of wastewater treatment to ensure compliance with regulatory standards.

Note: Source: The Formosa Plastics Group water pollution prevention and treatment management computer-based database

The effluent volume generated throughout 2024 was 43,000 tons per day. The quality of water eventually discharged into the Taiwan Strait met effluent standards after wastewater treatment. The volume of wastewater discharged per unit of product in 2024 was 0.00055 million L/ton, showing steady fluctuation. In the future, we will continue to evaluate and develop wastewater recycling and reuse (e.g., collecting process sour water to the FGD system) and wastewater treatment facility modification to increase the volume recycled, in order to continue reducing the wastewater discharge per unit product.

Historical Wastewater Discharge per Unit Product

Note: Source: The Formosa Plastics Group water pollution prevention and treatment management computer-based database

Effluent Water Quality Control Statistics