What the Frack is in That Water?

by Lena Groeger ProPublica

Environmentalists have repeatedly pressed regulators to compel oil and gas companies to report what chemicals they use in the drilling and fracking process. According to a 2011 congressional report, many of the chemicals used can pose a serious health risk. No one knows the exact makeup of the frack mixture, drilling muds and other stuff used at well sites, but this list breaks down the main ingredients revealed so far. Click on the chemical name for more detailed information. Read on and see the list of chemicals...