Water Resource Management

The stable supply of water resources has become an important issue in the world due to global climate change. TSMC actively evaluates risks and possible impacts in water resources, implements risk reduction programs, and plans for both daily water saving and water shortage dispatching. We integrate internal and external resources, and continue to implement process water conservation and water reclaim.

Strategies, Targets & Achievements

Strategies
  • Response for Risk
    Evaluate risks and possible impacts in water resources, and implement risk reduction programs
  • Water-saving Activity
    Plan for both daily water saving and water shortage dispatching, within both the enterprise and the supply chain
  • Water Reclaiming and Saving
    Integrate internal and external resources, and continue to implement process water conservation and water reclaim
2016
2017
2020
CASE STUDY

The Journey of Water in TSMC

The Journey of Water in TSMC

To improve the efficiency of water usage, TSMC categorizes process wastewater according to the cleanliness of discharge. By means of the design of classified process water drains and the establishment of various water recycling systems, TSMC continues to strive for effective usage of each water drop to 3.5 times, which is 350% of usage rate...

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CASE STUDY

Semiconductor Industry's First Ammonia Nitrogen Wastewater Reclamation System

Semiconductor Industry's First Ammonia Nitrogen Wastewater Reclamation System

TSMC introduced the first resource reclamation system for ammonia nitrogen wastewater in Taiwan. In 2016, this technique helped TSMC save 46,889 metric tons in sulfuric acid purchases while also reducing ammonia concentration in wastewater. This ammonia wastewater reclamation technique can not only reduce sulfuric acid purchase but also reduce ammonia in wastewater and produce valuable products...

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Five Actions of Water Resource Management

TSMC believes water resources management plays an important role in climate change and natural disaster adaptation. The Company has developed five core actions in line with our strategy to reach our water resource management goals.
Water Source Management

Continue water conservation measures, track water supply status and prepare for droughts and related actions, lay the foundation for water conservation and process water recycling through enhancement of the wastewater classification system.

Water Recycling

Raise the recycling rate and reduce environmental impact through advanced wastewater treatment techniques.

Optimization of Wastewater Resource Utilization

Convert materials in wastewater into reusable resources, optimizing resource utilization.

Developing Water Resource Diversity

Recycle wastewater effluent and cooperate with the government to execute reclaimed water project.

External Cooperation

Communicate and cooperate with industry, government, and academia and share water resource management experience to deal with the challenges of water shortages.

New Water Conservation Methods and Achievements

In addition to existing water conservation measures, TSMC strives to find ways to use recycled water and reduce consumption. We take a holistic view of the water usage of all fabs. Through 16 new measures carried out across four areas, we conserved 1.41 million metric tons of water, and saved approximately NT$18.07 million in water utility costs in 2016.
The average process recovery rate was 87.4% in 2016, which was higher than the standard set by the science park administration (85%). That brings the total tons of recycled water for 2016 to 94.3 million metric tons, about three times large as Baoshan Reservoir II.

Water Conservation Effectiveness (2012-2016)

2012 2013 2014 2015 2016
Average Process Water Recycling (%) (Note 1) 86.5 86.9 87.6 87.3 87.4
Total Water Saved (million M3) 53.4 66.9 81.0 85.6 94.3 (Note 4)
Water Saved, Measured by the Full Capacity of Boshan Reservoir II (Note 2) 1.7 2.1 2.6 2.7 3.0
Water Saved, Measured by Standard Swimming Pools (Note 3) 21,348 26,744 32,396 34,252 37,732
Number of Times of Each Drop Water Usage 3.1 3.2 3.3 3.5 3.5
Note 1: Average process water recycling rate is defined by the Science Park Administration
Note 2: A standard 50x25x2m swimming pool contains up to 2,500 cubic meter of water
Note 3: Baoshan Reservoir II is the major reservoir serving Hsinchu Science Park and the full capacity is 31.47 million metric tons
Note 4: Total recycled water quantity is 94.3 million metric tons in 2016 (92.89 million metric tons from existing measures and 1.41 million metric tons from new methods)

For more information, please read TSMC 2016 Corporate Responsibility Report:

Green Manufacturing - Water Resource Management

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