No, Dark Waters ain't the greatest movie ever- but if it doesn't keep ya in uneasy anticipation throughout, well then, you've been somnambulating throughout you own sorry life anyways!
Granted, it's the age old story, those in power, be they: rich, corporate or government will attack you, damage you, kill you, all the while they profit and deny it just the same. And having right on your side usually guarantees you're entitled to a heaping helpful doseful of yet more humiliation and degradation than you ever possibly bargained for!
I remember my mother's pride upon first getting a Teflon pan, it was one of the few things our family could afford that brought us straight into... the future, as we all collectively marveled at the ease with which eggs slid hither and yonder! In time, that Teflon coating of "forever chemicals" would slowly begin to wear and scratch off, right into our collective gullets. This film chronicles what happened to those that ate it, breathed it, drank it, bathed in it, lived next to and on top of it- all the while your friendly folks at Dupont (the "Better Living Through Chemistry" folks) kept secret, and later denied, that they had any knowledge of its potent toxicity and devastating heath effects...