A number of scientific studies have found Prozac and other pharmaceutical drugs in streams, rivers and even the drinking water in some places.
There pharmaceuticals can not be filtered out through the wastewater treatment plants and so are simply dumped in the environment and eventually make their way into the wild life.
The effects of these drugs on the wild life has included retarded development, reproductive problems, male fish developing female genitalia and inhibited growth.
Traces of Prozac have been found in the liver, brain tissue and muscle tissue of fish.