Impacts of Shale Gas Development on Regional Water Quality

by Shannon Julius

Drilling into shale is a difficult task, as gases are under high pressure and can easily damage the well’s integrity if drilling is done incorrectly. Such damage allows natural gases, particularly methane, to “migrate” through cement seals and into groundwater, which happens with approximately 1–3% of wells in Pennsylvania. The high toxicity of fracturing fluid raises the concern of fluid migration accompanying methane migration, and research has yet to determine the extent to which fracturing fluid can affect groundwater. However, it is highly likely that most of the unrecovered fracturing fluid is absorbed by the shale formation. The remaining fracturing fluid is recovered as Continue reading