text: J. Ernst did do the proper sampling and testing, so did her neighbors, the Campbell's in Ponoka, and the Zimmerman's in Westaskiwin, and the damaging data and evidence has been peer-reviewed and published, even referenced by the US EPA in their final frac report. Ernst has also documented evidence of Encana fracturing Rosebud's drinking water aquifers. 
  
  http://www.ernstversusencana.ca/fingerprinting-of-gas-contaminating-groundwater-and-soil-in-a-petroliferous-region-alberta-canada/