Wastewater Recycling No Cure-All in Gas Process
As drilling for natural gas started to climb sharply about 10 years ago, energy companies faced mounting criticism over an extraction process that involves pumping millions of gallons of water into the ground for each well and can leave significant amounts of hazardous contaminants in the water that comes back to the surface.
So, in a move hailed by industry as a major turning point, drilling companies started reusing and recycling the wastewater.
Source: New York Times