I live in a big city, and I have a bucket full of nasty tank water that has a ton of pond snail eggs in it. I dont wanna sift through the water and take the eggs out, but I also dont wanna risk somehow introducing pond snails into somewhere they arent already found. (Does such a place even exist?) I dont think the eggs or snails would be able to survive in a municipal sewer, but I just want to be sure, first.