Why is oil so cheap these days? Maybe part of the answer is that the US government absolutely had to stop fracking-- because it finally admitted the resulting earthquakes could not be tolerated, nor could the poisoned water be ignored any longer. Like so much else in our modern USA, the profits derived from fracking were privatized, while the destruction it rained down got socialized (i.e., experienced, and later to be paid for by us all).
Likely the collapse of the price of oil simplified things greatly for our government: no long-drawn-out legal battles over the public health and environmental effects. Fracking lost money, so it simply and quietly went away. Few recriminations had to be faced over the fact the industry was given carte blanche by governments to pollute aquifers. Maybe Americans wouldn't connect the fracking sites to all the new earthquake activity. But the WaPo isn't letting that happen. Here is the verbatim story: