| Noun | 1. | sewerage - waste matter carried away in sewers or drainswaste, waste material, waste matter, waste product - any materials unused and rejected as worthless or unwanted; "they collect the waste once a week"; "much of the waste material is carried off in the sewers" |
| 2. | sewerage - a waste pipe that carries away sewage or surface watersewage system, sewage works, sewer system - facility consisting of a system of sewers for carrying off liquid and solid sewage |