sewage
/ˈsuːɪdʒ
/noun [mass noun]
Waste water and excrement conveyed in sewers: [as modifier]: sewage treatment...
- The order arose after many of the wells were found to be contaminated with human sewage.
- The lake has now become a dumping ground for the city's sewage and industrial waste.
- The water manages to get into the sewage system causing the waste to surge up out of the manholes.
Origin
Mid 19th century: from sewer1, by substitution of the suffix -age.