The mayor toured the infamous car sewer that had turned the downtown into a hostile place for anyone on foot or bike.

After the harvest, the villagers held a common sewer in the barn where ale flowed and laughter lasted late into the night.

Late at night, sewer rats scurried under the flickering streetlights as the city slept.

The city conducted a water quality study across the sewershed to identify sources of contamination.

City engineers compared the pollution levels across multiple sewersheds to prioritize cleanup efforts.