Opinion: Drought demands wiser water decisions
Oct. 15, 2012
Droughts come and go, of course, but water scarcity is a looming problem as growing populations demand more water and climate change makes supplies more erratic.
Fortunately, some communities are already exploring options to soften the shock.
by Erica Gies
Blue Ridge Press
Midway through October, almost 64 percent of the contiguous United States remains in some form of drought, as the nation's most widespread drought since 1956 continues to threaten drinking water supplies, crops and livestock.
A stunning 90 percent of the West is abnormally dry, according to the U.S. Drought Monitor, with large areas of extreme drought in Colorado and Wyoming. Moderate to severe drought now stretches from Montana, south to Arizona, New Mexico and California.
The summer's epic Midwest drought has eased in the region's east, where Ohio, Indiana, and Illinois suffer only moderate drought. But farther west, Iowa still endures extreme drought, while Nebraska, Kansas and Oklahoma are gripped by exceptional drought.
Recent rains have eased drought in the South, but large swaths of Texas, Arkansas and Georgia are still punished by severe to exceptional drought, while Virginia and South Carolina are abnormally dry. Only the U.S. Northeast is relatively free of drought.
Droughts come and go, of course, but water scarcity is a looming problem, as growing populations increase demand and climate change makes supplies more erratic.
U.S. communities are responding in a number of ways that could be adopted across the nation:
A frequent response to water scarcity is lawsuits. In June, the U.S. Supreme Court declined to take a long-running case in which Alabama, Florida, and Georgia fought over the waters of Lake Lanier, allowing a lower court ruling to stand giving the Atlanta metro area much of the water.
Elsewhere, Mississippi officials have accused Memphis, Tenn., of overdrawing water from a shared aquifer and have asked the Supreme Court to weigh in. Kansas filed a $50 million legal claim against Nebraska over water rights. Las Vegas is seeking groundwater in eastern Nevada to slake the thirst of its booming population, but neighboring Utah is fighting the "water grab" in state courts.
Of course, the problem with lawsuits is they don't increase water supply; they just reallocate it.
Cooperative watershed management is an effective approach that considers an entire watershed for what it is: an integrated, natural system, as opposed to a mere source of a human commodity. It aims to meet the needs of all users in the water system, including cities, farmers, energy producers, plants and animals.
Cooperating federal, state, and regional agencies, along with nonprofits, use science to balance water supply, rights, and quality, often incentivizing conservation and using natural processes to clean and store water.
Between 1950 and 2005, the U.S. population doubled while domestic, commercial and industrial water consumption tripled. However, conservation measures are closing this gap. Between 2005 and 2009, our population increased 5 percent while water withdrawals increased by just 2 percent, according to the U.S. Geological Survey.
While many people equate conservation with sacrifice, it can be surprisingly easy. Pinellas County Utilities in Clearwater, Fla., for example, reduced water use by more than 40 percent between 1991 and 2008 simply by offering rebates and technical assistance for water efficiency – and by reclaiming water.
The idea of reclaiming, reusing or recycling, water disgusts some people, but it is a cost-effective way to increase supply. Communities in Arizona, Florida, Nevada, Texas, and California have been using these practices safely for years.
For example, Gilbert, Ariz., grew from 5,800 residents in 1980 to 212,000 today. To meet demand, water managers reclaimed wastewater, moving it through recharge ponds, where it percolates into the aquifer for future use. The pond water is also used directly for irrigation and other nonpotable purposes, reducing groundwater use. During summer's peak demand, Gilbert saves over 131 million gallons of drinking water per day.
Homeowners and businesses can harvest graywater from shower and sink drains and use it to flush toilets and to water gardens. Rerouting graywater or rainwater into the house or using utility-delivered treated wastewater requires a dual plumbing system. Such systems offer property owners increased water security, independence, and efficiency.
Utilities could greatly speed installation of reuse infrastructure and programs by redirecting some of the money spent tapping new freshwater supplies.
Innovative water pricing can encourage conservation and save money – not only in legal fees but also in unneeded infrastructure development. For example, in 1991, Irvine Ranch Water District in Orange County, Calif., instituted a rate structure that gives everyone a base allocation and then charges profligate users up to eight times more. Thrifty households get a discount. Raleigh, N.C.; Tucson, Ariz.; and Amarillo, Texas use similar tiered pricing strategies.
Climate models show that much of the United States is likely to experience prolonged, widespread drought in coming years. But wise water management can soften the shocks of future water scarcity.
© Blue Ridge Press 2012. All rights reserved
Photos (from top): Oklahoma pumpkin patch in the 2011 drought by Dennis Frank/flickr. Dallas' Rock Lake in the 1955 drought by Justin Cozart/flickr. Drying Texas reservoir courtesy Robert Burns/Texas AgrLlife Extension Service.
Freelance reporter Erica Gies has been published by The New York Times, Forbes.com, Grist, and E/The Environmental Magazine. Blue Ridge Press is a news service that has been providing environmental commentary and news to U.S. newspapers since 2007.
DailyClimate.org is an independent news service covering climate change. Views expressed are those of the author and not DailyClimate.org. Contact DailyClimate.org editor Douglas Fischer at dfischer [at] dailyclimate.org
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