especially back then, before such things as modern sewerage. It would be another 1.5 centuries before Europe started fixing the problem..The Thames in London was badly polluted by people just draining their home wastes into a local aquifer (that ended up in the Thames). No one did anything for years. It took a group of persons on a boat drowning not far from shore to get the public’s attention. The people died from being dumped into what amounted to raw sewage and were overcome before they could get to shore.