sewage gas: meaning, definition, pronunciation and examples

Low
UK/ˈsuːɪdʒ ɡæs/US/ˈsuːɪdʒ ɡæs/

Technical/Formal

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Quick answer

What does “sewage gas” mean?

A mixture of gases produced by the anaerobic decomposition of organic matter in sewage.

Audio

Pronunciation

Definition

Meaning and Definition

A mixture of gases produced by the anaerobic decomposition of organic matter in sewage.

A flammable and potentially hazardous gas mixture, primarily composed of methane, carbon dioxide, and hydrogen sulfide, generated in sewers, septic tanks, and wastewater treatment facilities.

Dialectal Variation

British vs American Usage

Differences

No significant lexical differences. Both varieties use the same compound noun.

Connotations

Identical technical and hazardous connotations in both varieties.

Frequency

Equally low frequency in both varieties, confined to specialist fields.

Grammar

How to Use “sewage gas” in a Sentence

[sewage gas] + verb (e.g., accumulates, builds up, escapes)verb + [sewage gas] (e.g., produce, vent, monitor)preposition + [sewage gas] (e.g., risk from, danger of)

Vocabulary

Collocations

strong
produce sewage gasaccumulation of sewage gassewage gas explosionsewage gas monitoring
medium
danger from sewage gasvent sewage gasflammable sewage gas
weak
toxic sewage gassmell of sewage gasbuild-up of sewage gas

Examples

Examples of “sewage gas” in a Sentence

verb

British English

  • The tanks will sewage-gas if not vented properly. (rare/technical)

American English

  • The lagoon began to sewage-gas over the summer. (rare/technical)

adjective

British English

  • The sewage-gas odour was overwhelming. (hyphenated attributive use)

American English

  • A sewage-gas detection system was installed. (hyphenated attributive use)

Usage

Meaning in Context

Business

Discussed in waste management company reports regarding safety and energy recovery.

Academic

Used in environmental science, engineering, and public health papers.

Everyday

Rarely used; might appear in news reports about sewer explosions.

Technical

Standard term in sanitary engineering, wastewater treatment, and occupational safety guidelines.

Vocabulary

Synonyms of “sewage gas”

Strong

methane (primary component)

Neutral

biogas (from sewage)anaerobic digester gas (context-specific)

Weak

foul gaswaste gas

Vocabulary

Antonyms of “sewage gas”

fresh airclean airoxygen

Watch out

Common Mistakes When Using “sewage gas”

  • Using it as a countable noun (e.g., 'a sewage gas'). It is generally non-count. Confusing it with 'natural gas' or 'landfill gas', which are similar but from different sources.

FAQ

Frequently Asked Questions

Sewage gas is a type of biogas. Biogas is a general term for gas from organic decay, while sewage gas specifies the source as wastewater.

Yes. The methane in sewage gas can be captured and burned to generate heat or electricity in a process called waste-to-energy.

It is dangerous because it is flammable (due to methane), can displace oxygen causing suffocation, and contains toxic hydrogen sulfide.

It is found in sewer systems, septic tanks, settling tanks, and any enclosed space where sewage decomposes without oxygen.

A mixture of gases produced by the anaerobic decomposition of organic matter in sewage.

Sewage gas is usually technical/formal in register.

Sewage gas: in British English it is pronounced /ˈsuːɪdʒ ɡæs/, and in American English it is pronounced /ˈsuːɪdʒ ɡæs/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • None

Learning

Memory Aids

Mnemonic

Think: SEWAGE (wastewater) + GAS (like methane). It's the gas that comes from rotting sewage.

Conceptual Metaphor

WASTE IS A (POTENTIALLY DANGEROUS) RESOURCE.

Practice

Quiz

Fill in the gap
A safety inspector warned about the potential for a(n) was not vented.
Multiple Choice

What is the primary hazardous component of sewage gas?