Conservation | Reuse and recycling | Education
Our water sources include surface water, groundwater and even collected rainwater, so we are sensitive to our potential impact on the water needs of communities where we operate. To evaluate and monitor water quality and availability, we periodically consult with local water authorities to assess their long-term storage and usage needs.
For example, our Texas sites, which make up the largest concentration of our operations, stay connected with the Texas Water Development Board and its survey activities. Since we are stakeholders in the Dallas Water Utility's long-range water-supply project, we participate in related public meetings and stay current on the project's status. This enables us to help shape the community's water supply well into the future and prepare our own operations accordingly.
Additionally, we routinely identify and implement mechanisms that improve water reuse and reduce overall consumption. These innovations – from installing waterless urinals to collecting rainwater for landscape irrigation – have made us one of the more efficient water users among industry peers. (We benchmark our water use with other members of the Semiconductor Industry Association.)
We reclaim and recycle about a quarter of the water used in our manufacturing operations worldwide. This water is directed back into our system for reuse in cooling towers, scrubbers or in manufacturing.
Additionally, different locations present unique opportunities for creatively conserving water. Some of our water projects include:
- Three Dallas, Texas, sites installed water recirculation units on thermal processing equipment, which will reduce our use of city water by approximately 131 million gallons annually.
- We reduce water alkalinity (pH) in two Dallas cooling towers to prevent calcium buildup and scaling along the tower walls. As a result, less water is needed to flush the mineral-concentrated water. This activity alone saves more than 74 million gallons of water each year and also reduces treatment costs.
- In Scotland, our Greenock site implemented a tool optimization project that enabled it to conserve more than 10 million gallons of water annually.
- In Germany, our Freising site optimized its water purification plant to save more than 16 million gallons annually.
Reuse and recycling
- Our TI Clark site in the Philippines increased pump capacity to maximize the amount of condensate and microfiltration water directed to its cooling tower. This is expected to reduce potable water use by 100 million gallons annually, as well as reduce biocide treatment at the cooling tower. The site also reuses nonindustrial water for flushing, which saves 5.5 million gallons annually.
- Our Baguio City site in the Philippines reuses reverse-osmosis reject water for toilet flushing, saving 24 million gallons annually.
- The central utility plant cooling towers in Dallas reuses roughly 127 million gallons of water from various on-site sources.
- Two of our sites in Japan, Miho and Hiji, strictly adhere to a zero-impact, zero-industrial discharge policy. Most water at these sites is reused, with the rest used as cooling water for air conditioning.
- We reuse reverse-osmosis reject water at our DMOS5 deionized water plant in Dallas. We clean up reject water and then send it back to the front of the water plant as feed water. This effort reduces consumption by about 62 million gallons annually. In Japan, our Aizu site implemented a similar process where the reverse-osmosis reject water normally discharged as wastewater will now be recycled, resulting in an annual savings of approximately 45 million gallons.
We educate our workforce on how to reduce the size of TI's water footprint through our internal sustainability website, periodic intranet articles and educational activities during events such as Earth Week. We encourage employees to report leaks and to avoid running water unnecessarily.