[qsera]

>turds floating down the Thames

Dude, what are you saying? Just boil the water and you are golden.

But you cannot remove the poisons in the industrial waste dumped into rivers by boiling or filtering. People are totally helpless now.

[defrost]

> you cannot remove the poisons in the industrial waste dumped into rivers by boiling or filtering.

That's why those methods aren't used.

> People are totally helpless now.

Depends on the country, some will regulate industry and insist on properly constructed separation ponds and heavy metal bioremediation.