Whenever this topic has been discussed, one of the major concerns has been introduction of pathogens from an aquarium to wild populations. What do we think then about wastewater?
I've just moved, and the fish room is now a shed that's less than 50 feet from a natural lake. I'm used to doing water changes by just running a hose outside and watering the lawn, but now I'm not sure that's safe. There is no sewer connection available.