"Federal regulators are considering retesting water supplies at a small town in Pennsylvania that residents say have been contaminated by natural gas drilling.

Just a month after declaring water in Dimock safe, officials from the Environmental Protection Agency are taking another look after new evidence suggested that drinking water could be polluted worse than originally thought.

"EPA is considering next steps including conducting some samples of well water in the area," the EPA told Reuters on Thursday, after receiving hundreds of pages of data from Dimock residents.

Federal officials have visited affected residents this week, some of whom have been without fresh drinking water since drilling by energy company Cabot Oil & Gas began three years ago."

Timothy Gardner and Edward McAllister report for Reuters January 6, 2012.
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