Mealey's (June 18, 2015, 3:48 PM EDT) -- PITTSBURGH — A water treatment services company on Aug. 14, 2014, filed a brief in the U.S. District Court for the Western District of Pennsylvania arguing that the hydraulic fracturing company suing it for $7 million for water contamination at a well site cannot show evidence that the water treatment company is at fault (EQT Production Company v. Terra Services LLC, No. 14-01053, W.D. Pa.)....