The problem with flushing dead fish down the toilet is nothing to do with the quality of your drinking water. The problem is that the dead fish may contain virii, bacteria, parasites etc., that are quite tolerant of the waste water treatment process, being introduced into the wild eco system. Thus a river which never had pathogen "X" in it before now has, and because it is new, the local fish population has little or no immune response to it.
The waste water treatment plant is not much more then a super size biological filter, it uses the same types of bacteria to break down the noxious matter it is presented with. If a normal biological filter removed pests, then all of our aquariums would run pest free - do they?
I believe it is wrong to flush dead fish down the toilet.
As for flushing unwanted live fish - inexcusable.
The waste water treatment plant is not much more then a super size biological filter, it uses the same types of bacteria to break down the noxious matter it is presented with. If a normal biological filter removed pests, then all of our aquariums would run pest free - do they?
I believe it is wrong to flush dead fish down the toilet.
As for flushing unwanted live fish - inexcusable.