I believe the period from 1900 to around 2100 will be looked at as this horrible era where we filled our own ecosystem with an almost unimaginable amount of "toxic" chemicals.
Truth is, particularly the US, the only thing we really test consumer products for is lead and mercury. These are the two things we test basically everything for. Other than that it's pretty much don't ask don't tell (and don't test), unless there is a specific piece of legislation that forces such a test. It's starting to change. But the US model is basically, "Do whatever you want. We'll let liability shape policy." So you create a product, put it out and have it do unimaginable damage, then pay for the health and environmental damage you did, and then create legislation around what others should do going forward.
I get the economic reasons for this. But I think we went too far, too fast, and too hard.