Water Samples

Water Samples

Jason Janik/Bloomberg

Water samples are logged and stored at a treatment plant that separates oil, sediment and water mixed during the hydraulic fracturing process, near Shreveport, Louisiana. The EPA today announced the start of a process that could result in companies being forced to report to the government, and possibly the public, the chemicals they add to sand and water to break apart shale rock and release oil and gas trapped deep underground.