Ch2 Sustainable Development - Environment - UMC

Water Consumption Reduction
● 2011 reduction target: 1 % reduction compared to 2009
● 2011 reduction result: achieved a reduction rate of 3.5%
UMC’s Water Conservation Result (2007-2011)
Future Water Conservation Projects
Water conservation will face increasing challenges in the future
as fewer areas will be available to further save water. UMC will
continue to introduce new technology that can help save water
in a cost-effective way. UMC has set a goal to save 1% more
water (about 100,000 tons of water) every year.
Note:
1. Water consumption in 2011 is reduced by 3.5% compared to 2009. The comparison is based
on water use reduction measures using the same equipment as in 2009, and excludes factors
of production fluctuations and increased consumption from new fabs.
2. The equivalent CO 2 emission value is based on the formula provided by Taiwan Water Corpora
tion (water supply 0.193kg-CO 2 /m 3 ).
New Water Conservation Measures in 2011
Note:
1.Fab 12A phase 3 is newly constructed.
2.Pao-Shan Second Reservoir is the main water supply to the Science Park. The total water storage
capacity is 31.34 million tons (source: Water Storage Capacity Report on January 2012, WRA,
MOEA).
Total water recycled was 23.27 million tons, equivalent to
conserving 0.7 of Pao-Shan Second Reservoir’s water storage
capacity.
Fab12A CMP waste water
reuse facility
Fab8F EPI LSR water
recycle facility
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