Sustainable water use strategy
Water is a central resource to all aspects of life and business. Therefore, water management is a crucial element to ensure sustainable use of resources and safeguard business continuity.
We understand sustainable use of water as the efficient water management practices throughout all stages of our operations, always taking into account the water needs of surrounding communities.
We strive to improve water efficiency and to use water in a sustainable way. Therefore, we take several actions to increase our water recycling rate. For example, cooling water can be used afterwards to produce ultrapure water for manufacturing that can again be used afterwards for other purposes like washing processes. Therefore, in 2019 fiscal year 14.53 percent of ultrapure water and 8.65 percent of production wastewater were re-used.
Waste water treatment is another priority in our water management. Only after all technical possibilities of water reuse are exploited, Infineon discharges its waste water directly or indirectly depending on its quality, local conditions and official permissions.
We emphasized the high priority of the water topic in the 2014 fiscal year by endorsing the UN’s “CEO Water Mandate”. This is a special initiative of the UN Secretary-General that aims to promote a positive impact on the ongoing global water crisis by joining forces with global business leaders to advance water sustainability solutions. As an endorser, Infineon pledges to show continuing support to water preservation and conservation as seen in our environmental sustainability practices and concretely in the efficient management of water at our production sites.
Risk analysis regarding water stress
According to the definition of the “World Business Council for Sustainable Development” (WBCSD), water stress begins with an available total amount of renewable water resources of less than 1,700 cubic meters per person in the population per year. We used the “Global Water Tool Version 2015” of the WBCSD to perform a risk analysis at country level. The results show that only our manufacturing site in Singapore is located in a water stress area. This site consists primarily of office and test operations with a comparatively low level of water consumption. Although during 2019 fiscal year only 0.60 percent of our total water volume was consumed there, we implemented measures to ensure efficient water use at site as well. Two buildings at site have been awarded the “Water Efficient Building” certificate of the local water authority “PUB”.
Water Balance at Infineon:
The starting point for our successful water management is the published water balance.
Infineon water supply is based on on-site sources (groundwater fed by surface water) and also on local suppliers (drinking and non-drinking water).
It's a fact that semiconductor industry in general requires water for production. However, at Infineon only a small part of the water withdrawal is consumed, whereas a large part is used for cooling purposes only. We consider as consumed water those parts, which end up in sewage plants where the water is treated.
So, actually approximately 60% of the water withdrawal is returned back to nature with equal or better quality than before.