In this photo made on Wednesday, Dec. 15, 2010, Jim Riggio, the plant manager for the Beaver Falls Municipal Authority, shows the filtering rig that the treatment plant used to develop improvements in... more 
In this photo made on Wednesday, Dec. 15, 2010, Jim Riggio, the plant manager for the Beaver Falls Municipal Authority, shows the filtering rig that the treatment plant used to develop improvements in the treatment of the water at the intake facility in Beaver Falls, Pa.. Their water began flunking tests for trihalomethanes regularly last year, around the time that a facility 18 miles upstream became Pennsylvania's dominant gas wastewater treatment plant. less 
1 / 1
Associated Press | Photo By Keith Srakocic
Wed, Jan 5, 2011 12:04 PM EST