Yes, they are. Very few US lakes and/or rivers are have fish that are not safe to eat. And those that are unsafe are actually making a come back. Slow yes, but as long as they have life in them they will clean themselves up.
We’re ruining the oceans.
We could eliminate China as they are the ones fishing out the oceans. And dumping in plastic.
Much of our soil is bad too.
No. It isn't.
You live in a city don't you.