Planning for Illinois' water needs - Metropolitan Planning Council

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Planning for Illinois' water needs

With snow flurries still swirling across Chicagoland, it's hard to be mindful of last summer's drought and the havoc it wreaked on homeowners, farmers, business and industry.

When people think of drought, they conjure images of dry creek beds and tumbleweeds of the parched Southwest. But as Illinois ' worst drought on record continues due to lack of rain and snowfall, we're learning that — incredible as it seems with Lake Michigan in our back yard — we suffer not only the same predicament as Texas and Arizona , but every other growing region in the country: we have a limited water supply. That means without rain — and substantial research and planning — we homeowners had best accept community-wide watering bans and start worrying about clean water. Business, agriculture and industry: you require reliable water at a cost-effective price? Consider that you may be forced to locate and conduct commerce based on water's availability — and comply with measures that limit your use.

Last year's withered lawns and crops made us aware that water-quality issues and limitations on supply are a looming crisis, just one long dry spell away. Although Lake Michigan currently supplies water to a large area, including the city of Chicago and parts of Cook, DuPage, Lake and Will counties, many communities rely on supplies from groundwater and surface water for public, industrial and commercial purposes. No rain or snow means no replenishment, or recharge, of the system. Water resources are further taxed by increasing consumer demand: today, Illinois residents, business and industry use nearly 18 billion gallons of water each day for domestic, municipal, commercial, agricultural, industrial, mining, power generation, recreation, navigation and waste treatment purposes. That number is projected to rise by almost 28 percent by 2025.

Last week, the Metropolitan Planning Council and Openlands, in conjunction with the Campaign for Sensible Growth, released a report, Troubled Waters: Meeting Future Water Needs in Illinois . Using the current drought and potential for crisis as a motivator, we urged state leaders to establish a statewide framework for regional water supply assessment, planning and management. Troubled Waters details the critical factors restricting use of water from Lake Michigan and the lack of scientific data about water sources, as well as identifies the challenges to maintaining a sustainable water supply, especially as projected growth further strains our resources.

And grow we will. In the Chicago area alone, population is expected to top more than 10 million people by 2030, guaranteed to put more and more demands on our water supply. With that growth there'll be more than the proverbial well running dry: potential water shortages have been forecast for at least 11 townships in northeastern Illinois by 2020.

Since the withdrawal of water from Lake Michigan has been set by decree of the U.S. Supreme Court and by agreement with other states and Canada , Illinois ' allocation is almost fully used and unlikely to be increased in the near future. As the suburban region expands far south and west, into Will, Kankakee and Grundy counties, increased demand for water will have to be met primarily through increased withdrawals from groundwater sources or inland surface water; the deep aquifer system and Lake Michigan are now at or near their sustainable or legally mandated limits. So communities looking to buy " Chicago " water from others further up the pipe may not have those options available.

As Troubled Waters draws attention to the challenge, Gov. Rod Blagojevich has issued an executive order calling for the development of state and regional water supply plans. Executive Order No. 1 (2006) identified how increasing demands on Illinois' water resources combined with the ongoing drought may lead to conflicts between multiple water supply users, adversely affect our health and environment, and hurt the economy. The order calls for scientific studies of our water system and directs the development of comprehensive state and regional plans to manage this finite resource.

This is a significant step forward. State and regional leadership are crucial because water knows no political boundaries — what happens up or down stream, within aquifers and to Lake Michigan impacts us all. With no end in sight to the current drought, and water needs expected to spike to more than 25 billion gallons used per day in the next 20 years, the time to find state dollars is now so that we can start careful planning and management of our water resources. Such action is critical so that even during times of little or no rain, we ensure adequate supplies of clean water for everyone, now and in the future.

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