FILE - In this Dec. 15, 2010 file photo, water plant operator Torrey Jones checks the clarity of a sample of treated water at the Beaver Falls Municipal Authority water treatment plant in Beaver ... more 
FILE - In this Dec. 15, 2010 file photo, water plant operator Torrey Jones checks the clarity of a sample of treated water at the Beaver Falls Municipal Authority water treatment plant in Beaver Falls, Pa. A U.S. Department of Energy panel wants energy companies to reveal all the chemicals they use in a drilling technique that has allowed them to reach huge and previously inaccessible deposits of natural gas and paved the way for tens of thousands of new wells but that critics say could poison water supplies. (AP Photo/Keith Srakocic, File) less 
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Associated Press | Photo By Keith Srakocic, File
Thu, Aug 11, 2011 8:50 AM EDT