As the use of hydraulic fracturing (“fracking”) technologies has increased in the United States, so have concerns about its impacts on human health and the environment. In response, the US Congress has requested the Environmental Protection Agency (EPA) to conduct a comprehensive study designed to provide both policymakers and the general public with reliable scientific information about the potential risks associated with hydraulic fracturing. At the close of 2012, the EPA published an update (pdf) on the ongoing study of the relationship between hydraulic fracturing and drinking water resources. The update highlights research progress as of September 2012.
