Regulations keep factories and people that don't give a shit from creating another Love Canal, Hinkley, or worse.
Big business is about $$, they seek the most cost effective way to do things by contracting out things like disposal and clean up to the lowest bidder. If they aren't required to monitor emissions or be held accountable for any disposal methods very, very few of them will.
Trump wants to create jobs...if he deregulates things, and he already has to some extent, eliminating one ruling already preventing miners from dumping waste into streams... here in the coal and fracking region that's a BIGLY one.
But it may bring more industry and more JOBS!!
...and at what price? When you or your kids have asthma and can't breathe or drink the water in 20 years, at least you'll have a job to pay the medical bills.
Ever play in a sulphur creek or one contaminated with acid mine water? Both my parents did...might eliminate his need for the orange spray tan and save him $$$.