faulty cement well casings cause of fracking related contamination

A new study finds that the well casing – the cement that seals the drill holes – to be the cause of fracking related water contamination.  It has been a little unclear if the well casings were the cause of the issues, or whether the fracking fluids were leaking through layers of earth to contaminate water.  This is good news for increased use of fracking techniques, because if wells are sealed with more care, it could prevent most contamination issues.  It remains to be seen whether this should be accomplished via stricter regulations, or if industry can do a better job on their own – since they probably realize they have a big public relations problem.

http://www.pnas.org/content/early/2014/09/12/1322107111.abstract

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