A worker at the West Virginia American Water Co. intake facility on the Elk River breaks ice to take water samples, Friday, Jan. 10, 2014 in Charleston, W.Va. The chemical b4-methylcyclohexane methanol leaked from a 48,000-gallon tank at Freedom Industries, a chemical storage facility about a mile upriver, on Thurday in Charleston, W.Va. The White House has issued a federal disaster declaration in West Virginia, where the spill may have contaminated tap water, officials told at least 300,000 people not to bathe, brush their teeth or wash their clothes. (AP Photo/Tyler Evert)