CNN.com
Notice Fort Worth is in the mix.
Washington Post.com
Starting up a well requires 3 million to 7 million gallons of water. Drillers mix in chemicals that environmentalists say can imperil rivers and springs. Critics say natural gas can seep into drinking supplies, too.
Large volumes of water, containing leftover chemicals and mineral waste, return to the surface once a well is complete; that water requires safe disposal or treatment.
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