[smokinreefer]

Good points!

If it were "just" salt water i'd be inclined to say go for it and dump it to the storm drain.

But you've raised a good point, it's not so much "just" the saltwater but the foreign micro and macro organisms that come with it.

Not really on par with this, but think lionfish. And what a devastation it has been to the ecosystems that it has been unaturally introduced to.