Remember, kids, corporations couldn't do this without government intervention. If that company had been a partnership, the owners never could have escaped the liability, and knowing that, would have been more cautious, refraining from polluting when they could, and carrying insurance for when they couldn't. The rates would go up if the insurance company determined that said company was polluting, something which would put them out of business if they did it too much.
But hey, let's have fascist solutions for fascist problems instead.