– Report National GroundWater Association (NGWA) – January 2012
Potential Contaminant Pathways from Hydraulically Fractured Shale to Aquifers, by Tom Myers
Hydraulic fracturing of deep shale beds to develop natural gas has caused concern regarding the potential for various forms of water pollution.  The report warns that the injection of fracking fluids under pressure underground could cause displacement of or addition to  fluids naturally present, which could move through layers of rock made more permeable by the fracking process and contaminate aquifers within 10 years.