Ethanol or Water: Which One?

Jonathunder, Wikimedia Commons

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Growing and producing ethanol costs a lot more water than anyone realized. Nevertheless we make some 9 billion gallons worth every year in the US. That’s 13 to 17 percent of US corn production—with more coming down the pipeline.

But we could be a lot smarter about the process. Based on water use alone, some places grow reasonably cost-effective bioethanol while others produce an absurdly environmentally expensive brew.

Previous studies estimated that a gallon of corn-based bioethanol uses from 263 to 784 gallons of water from the farm to the fuel pump. But a new study assessed irrigation data from 41 states and found it’s as high as 861 billion gallons of water. And some places cost 2,100 gallons of water to produce one gallon of ethanol.

Bottom line: Colorado, Wyoming, Kansas, Oklahoma, California and New Mexico should not be growing ethanol. In the authors’ words: Continued expansion of corn production in these regions is likely to further aggravate expected water shortages there.

Better growing states: Michigan, Wisconsin, Ohio, Indiana, Kentucky. The authors conclude: The time left for improving water consumption is limited… and immediate action needs to be taken in order to prevent a problem shift from energy supply to water sustainability.
 

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SIX TRUTHS

Reclaiming power from those who abuse it often starts with telling the truth. And in "This Is How Authoritarians Get Defeated," MoJo's Monika Bauerlein unpacks six truths to remember during the homestretch of an election where democracy, truth, and decency are on the line.

Truth #1: The chaos is the point.

Truth #2: Team Reality is bigger than it seems.

Truth #3: Facebook owns this.

Truth #4: When we go to work, we're in the fight.

Truth #5: It's about minority rule.

Truth #6: The only thing that can save us is…us.

Please take a moment to see how all these truths add up, because what happens in the weeks and months ahead will reverberate for at least a generation and we better be prepared.

And if you think journalism like Mother Jones'—that calls it like it is, that will never acquiesce to power, that looks where others don't—can help guide us through this historic, high-stakes moment, and you're able to right now, please help us reach our $350,000 goal by October 31 with a donation today. It's all hands on deck for democracy.

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