put down the Drudge kool aid
contaminated aquifers remain that way for a looong time, if not forever.
That's true and the most egregious example of that was perpetrated by environmentalists on the state of California with their mandate to use MTBE as an oxygenate. Look it up, the environmentalists did more damage in 10 years than big oil did in the previous 100.
Actually, Caliifornia was looking to an additive to increase the oxidation of gasoline during the combustion process, but it was the oil companies who pushed MTBE because it was a waste product of the refining process. Adding it to gasoline solved their problem - in the short term. Meanwhile they made a killing at the pump until it was discovered that when it got into the groundwater and soil due to leaking storage tanks, the stuff was difficult to breakdown, and so was a persistent pollutant. That drove remediation costs up. So yeah, it should never have been used. But California wasn't the only state that used it. Many other states did as well.
Oh, and if you think that the MTBE situation cancelled out the last 100 years of environmental degradation caused by the petroleum industry, then you simply don't know what you are talking about. I spent 14 years of my life cleaning up their messes. What did you do? Right. Nothing at all.