The nonprofit, nonpartisan investigators at ProPublica have produced a four-part series (whichs eems likely to grow) on the subject, available here. Abrahm Lustgarten writes in the mainbar, "Over the past several decades, U.S. industries have injected more than 30 trillion gallons of toxic liquid deep into the earth, using broad expanses of the nation's geology as an invisible dumping ground."No company would be allowed to pour such dangerous chemicals into the rivers or onto the soil. But until recently, scientists and environmental officials have assumed that deep layers of rock beneath the earth would safely entomb the waste for millennia. There are growing signs they were mistaken." (Read more)
Injection wells are increasingly being blamed for earthquakes, usually small but occasionally damaging. Mike Soraghan of Environment & Energy News writes about a 5.6-magnitude quake that hit central Oklahoma last November. Jerri Loveland, who still can't afford to pay for the damage to her home, doesn't blame fracking. "Coming from an oil-industry family, she sees the connection as having more to do with the millions of gallons of salt-laden water that comes up with the oil and gets reinjected in deep wells nearby. In rare cases, that wastewater can lubricate faults and unleash earthquakes." But Oklahoma oil and gas officials have rejected advice against putting injection wells near geologic faults.