Freedom Industries, which has been blamed for a chemical spill that left thousands of people without water, has filed for bankruptcy. The company's facility on Barlow St. is seen here on the banks of the Elk River in Charleston, West Virginia. Tom Hindman/Getty Images hide caption

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The Freedom Industries facility sits on the banks of the Elk River last Friday, in Charleston, W.Va., site of a chemical spill that has led to a ban on using tap water in the area. The CDC says pregnant women in affected areas should drink only bottled water. Tom Hindman/Getty Images hide caption

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In West Virginia, a ban on water use has been lifted in at least three areas affected by a chemical spill. Here, Al Jones of the state's General Services department tests the water as he flushes a faucet and opens a restroom on the first floor of the Capitol in Charleston on Monday. Steve Helber/AP hide caption

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On Saturday in South Charleston, W.Va., Cathy Mabe was one of many who came to get water from a temporary filling station. Lisa Hechesky /Reuters/Landov hide caption

itoggle caption Lisa Hechesky /Reuters/Landov

In Charleston, W.Va., the shelves of this Kroger supermarket had been nearly stripped of bottled water on Thursday. Residents rushed to buy water after a chemical spill led officials to warn that they not use what's coming out of their taps. Tyler Evert/AP hide caption

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State and local leaders break ground at a Louisville, Ky., coal-burning power plant in November 2012. Dylan Lovan/AP hide caption

itoggle caption Dylan Lovan/AP

Ramps, or wild leeks, are a member of the lily family and resemble scallions with their wide leaves and small, white bulbs tinged a rusty red. John Blankenship/The Register-Herald hide caption

itoggle caption John Blankenship/The Register-Herald