Youth, The Culprit?
Paris is known to be a romantic city and also very lively one. Couples enjoy their time. Even youngsters love spending time around the location of the canal. It has been reported that the nearby areas around the Canal Saint-Martin became prominent for its nightlife.
As I mentioned before, rich brats of Paris preferred this location for hanging out. It was obvious that this canal must hold many filthy things, given the fact that lot of people hang around.