ALLENTOWN, Pa. – The U.S. Environmental Protection Agency abruptly changed its mind Saturday about delivering fresh water to residents of a northeastern Pennsylvania village where residential wells were found to be tainted by a natural gas drilling operation. Only 24 hours after promising them water, EPA officials informed residents of Dimock that a tanker truck wouldn't be coming after all -- an about-face that left them furious, confused and let down -- and, once again, scrambling for water for bathing, washing dishes and flushing toilets. Agency officials would not explain why they reneged on their promise, or say whether water...