A spot check shows item 15 in the list, published 2014, is based on work from 2011-12 and the abstract concludes with:
> This study provides a baseline of water-quality conditions in the Monongahela River Basin in West Virginia during the early phases of development of the Marcellus Shale gas field. Although not all inclusive, the results of this study provide a set of reliable water-quality data against which future data sets can be compared and the effects of shale-gas development may be determined.
That is to say, this is a baseline measurement from the start of exploration, not a demonstration that fracking goes not contaminate groundwater.
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The MIT report listed as item 26 on the list does say the process is mostly safe, which I respect, but also page 39 lists counts of incidents over a four or five year period, including 20 incidents of "groundwater contamination by natural gas or drilling fluid". So it's not like problems do not happen.
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A spot check shows item 15 in the list, published 2014, is based on work from 2011-12 and the abstract concludes with:
> This study provides a baseline of water-quality conditions in the Monongahela River Basin in West Virginia during the early phases of development of the Marcellus Shale gas field. Although not all inclusive, the results of this study provide a set of reliable water-quality data against which future data sets can be compared and the effects of shale-gas development may be determined.
That is to say, this is a baseline measurement from the start of exploration, not a demonstration that fracking goes not contaminate groundwater.
===
The MIT report listed as item 26 on the list does say the process is mostly safe, which I respect, but also page 39 lists counts of incidents over a four or five year period, including 20 incidents of "groundwater contamination by natural gas or drilling fluid". So it's not like problems do not happen.