While I think that, perhaps, Obama's EPA was maybe a bit too strict with environmental restrictions, to the point that he claimed that "energy prices would rise (some number)", I'm not sure loosening them too much is such a great idea, either.
I compare Obama's lack of enforcement of immigration laws, and proposing amnesty, to Trump's EPA, weaking environmental protection laws.
We'll have to see. (If we can still see, through the pollution. *Cough, cough*.)
On the other hand, I can see loosening the EPA's regs slightly, to be more competitive with China. We have to do something to be more competitive. If we don't, China might have an advantage over us, moreso than just cheaper labor.
But by the same token, that line of thinking is what brought about the TPP, which I believe, Trump opposes.
I dunno. I like drinking and breathing, without getting loads of hazardous chemicals.