The water supply and sanitation in Europe took a deep dive where the Roman infrastructure broke down. In many places it was rather recently that sanitation was

The water supply and sanitation in Europe took a deep dive where the Roman infrastructure broke down. In many places it was rather recently that sanitation was on par or better than in Rome (but of course, not everywhere in the Roman Empire the standards were as high as in the capital). https://en.wikipedia.org/wiki/Sanitation_in_ancient_Rome https://en.wikipedia.org/wiki/Sanitation_in_ancient_Rome