English Reference

Word

sewage

US/ˈsuədʒ/

UK/sˈuːɪdʒ/

Definitions

01waste water

B2

n. the mixture of water and waste that comes from toilets and sinks and goes into pipes.

n. liquid and solid waste matter carried off by sewers; typically a suspension of water and organic waste from domestic or industrial sources.

“The city built a new plant to treat sewage before it reaches the ocean.”

“Environmental regulations require the facility to treat raw sewage to a high standard before discharging the effluent into the local river system.”

Synonyms

wasteeffluent

02the pipe system

C2

n. the system of pipes used to carry waste away.

n. the system of sewers or the process of removing waste; a synonym for sewerage.

“The old town had a very simple system of sewage that often leaked.”

“The Victorian engineers revolutionised urban health by installing a comprehensive sewage system beneath the city's main thoroughfares.”

Archaic

Usage

In modern English, 'sewerage' is preferred for the infrastructure, while 'sewage' refers to the waste itself.

Synonyms

Real-World Examples

“Then a human comes along and eats the irrigated food or drinks the water and gets sick, releasing more oocysts into sewage systems.”
The Conversation · 10 Aug 2026

Etymology

From sewer (“system of pipes used to remove human waste and to provide drainage”) + -age or from sew (“to drain or draw off water”) + -age.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
B2 · Upper Intermediate
Frequency
Frequent
Updated

Scan code

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English Reference