Don't like enviro-whackos, I know about the hundreds of thousands that contract malaria because the watermelons (green oustide, red inside) jerks work to restrict/eliminate minuscule uses of DDT...but I do believe the gov. has some role to play in reducing the really icky things that indsutry/agriculture can leave behind.
I'd really just as soon not have a a plant reducing PbS next to my house without controls.
Control begats control.
This is not the federal government's job.
This is the job of the States.