Foxconn Will Drain 7 Million Gallons of Water Per Day From Lake Michigan to Make LCD Screens (gizmodo.com)

Earlier this week, the Wisconsin Department of Natural Resources granted permission to Taiwanese tech manufacturer Foxconn, best known for assembling Apple's iPhones, to siphon off seven million gallons of water per day from Lake Michigan, despite protests from conservation groups. From a report: The massive diversion of water from the lake will be used to produce LCD screens at the company's planned $10 billion, 20 million square foot manufacturing plant set to be built in Mount Pleasant, Wisconsin. Nearly 2.7 million gallons of the water -- about 39 percent of the daily intake from the factory -- will be lost in the process, primarily from evaporation. The remaining water will be treated and returned to the lake basin.

Wisconsin's DNR noted in a statement that the requested withdrawal will "only amount to a 0.07 percent increase in the total surface water withdrawals from Lake Michigan." For environmentalists in the region, the issue is not so much the diversion for the Foxconn factory itself but rather the precedent it will set for how the lake water can be used. "If we allow this to happen, it's going to happen all over the basin, with other states and then it's going to be the thirsty states and nations to come," Jennifer Giegerich, the government affairs director for the Wisconsin League of Conservation Voters, warned during a public hearing about the diversion, according to the Wisconsin Gazette.

Comments

Re:Manufacturing

[friedmud]

Just looked through the article - they estimate that ~40% of the water will be evaporated - with 60% going back. So that means this is only going to "drain" 2.8M Gallons per Day... and how much of that evaporated water will fall back into the lake as rain too?

We simply can't have it both ways: we have to find some middle ground with manufacturing if we want the jobs. As long as they are using the natural resources responsibly and not polluting them or making a long-term impact... we need to allow them to do their thing.

Re:Manufacturing

[OzPeter]

Just looked through the article - they estimate that ~40% of the water will be evaporated - with 60% going back. So that means this is only going to "drain" 2.8M Gallons per Day... and how much of that evaporated water will fall back into the lake as rain too?

We simply can't have it both ways: we have to find some middle ground with manufacturing if we want the jobs. As long as they are using the natural resources responsibly and not polluting them or making a long-term impact... we need to allow them to do their thing.

No industrial process is going to the 100% clean

So the big question is what else goes back with the water?

Not really a lot

[LynnwoodRooster]

According to this study, natural evaporative losses can be up to 0.6 inches per day. Assuming it's really just under half an inch (about 12mm), natural evaporation from Lake Michigan can reach 183 billion gallons per day. That 2.7 million gallons lost per day - and as the article says, most of it to evaporation - is about 0.0014% of the current evaporation. Is moving evaporation from the lake surface to a site right next to the lake surface an issue? In other words, relocating around 1 thousandth of 1 percent o the evaporation is the concern?

Re:Wow, that's a lot of water.

[Citizen of Earth]

2.6e-5 km^3 water drained divided by the 58000 km^2 surface area = 4.5e-10 km of depth lost per day = 0.00045 mm/day, which is slightly less than your assumed 10 feet. Plus, this water will return to the lake pretty quickly. The water consumption is the stupidest thing to be worried about. It's not like they're sending it into a black hole for disposal. The contamination of the returning water is the main thing to be concerned about.