PUB Smart Water Grid & Leak-Detection Sensor Network
This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.
How this atlas is made · What “last verified” means · What “source-checked” means · The full record behind this page
✎ Corrected 27 Aug 2026 Publication date recorded for 3 sources. What changed →
PUB, Singapore's national water agency, runs a Smart Water Grid that layers sensors and analytics across the island's distribution network. Acoustic leak sensors listen to noise characteristics inside the pipe, send readings to a central server and alert PUB automatically, pinpointing a leak to within about 3 metres. They were first trialled in 2017 with 120 sensors along roughly 70 km of large water mains; PUB said it would scale progressively to 1,200 sensors islandwide for leak monitoring by 2021.
what does this mean?
The strongest source is the operator's or the city's own reporting — an official report, dataset or press release. It grades who did the looking — not how well the project went. All four grades →📊 Impact
The trial detected 13 leaks over three years across 120 sensors on about 70 km of large mains. In one case in 2018 the sensors flagged a potential leak on a 700 mm main beside a major expressway, and excavation found a 13 mm corrosion hole.
🎓 Lesson
The instrument is precise and the yield is small, and both are the point: thirteen leaks in three years is what listening to seventy kilometres of large mains produces in a network that was already in good condition. Singapore's very low water loss long predates these sensors, and nothing in the record here measures what the grid added to it. Two things are also worth naming about the evidence: the trade article that carries every figure in this entry is published by PUB itself, and no source confirms whether the 1,200-sensor target set for 2021 was reached.
Sources
Show your work What this page rests on and what it can’t tell you · all 8 claims with their sources · the forensic record
Evidence Passport · public beta 8 addressable claims, 3 source dossiers, one permanent baseline. The passport is unreviewed — an AI-assisted structural migration, not a human or expert endorsement. Every revision keeps a permanent copy under revision history.
Inspect the claims, one by one — verbatim text, sources and caveats for all 8
The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.
clm-7c6ef7a118476803
descriptive
PUB, Singapore's national water agency, runs a Smart Water Grid that layers sensors and analytics across the island's distribution network
Sources carrying this claim
clm-9f165182c708b858
quantitative
Acoustic leak sensors listen to noise characteristics inside the pipe, send readings to a central server and alert PUB automatically, pinpointing a leak to within about 3 metres
Sources carrying this claim
clm-7c4b185d52555bde
quantitative
They were first trialled in 2017 with 120 sensors along roughly 70 km of large water mains; PUB said it would scale progressively to 1,200 sensors islandwide for leak monitoring by 2021
Sources carrying this claim
clm-8a2d51a9861d53ea
quantitative
The trial detected 13 leaks over three years across 120 sensors on about 70 km of large mains
Sources carrying this claim
clm-9e99470bab049fba
quantitative
In one case in 2018 the sensors flagged a potential leak on a 700 mm main beside a major expressway, and excavation found a 13 mm corrosion hole
Sources carrying this claim
clm-2cfeb651fed44d11
descriptive
nothing in the record here measures what the grid added to it
Sources carrying this claim
clm-25367ea8344308f3
descriptive
the trade article that carries every figure in this entry is published by PUB itself
Sources carrying this claim
clm-8168efa76cd2a5b8
quantitative
no source confirms whether the 1,200-sensor target set for 2021 was reached
Sources carrying this claim
Forensic record — source dossiers, gaps, hashes and the exact revision this page renders
This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.
Awaiting operator and domain-expert review; publication of this revision implies neither.
sha256:3518a094a745d17485eea9aa50ed80999c2798ac3233c0fc260428290ffd37db
- 8
- of 8 claims mapped
- 3
- source dossiers
- 1
- publication dates recorded
- 0
- archives linked
- 0
- exact locators
- 0
- content captures hashed
Governance facts carried by the record
- Operator
- PUB, Singapore's National Water Agency
- Actor types
- utility
- Funding model
- utility
- Funding description
- Not recorded
- Cost
- Not recorded
- Ownership
- Not recorded
- Decision rights
- Not recorded
- Exit conditions
- Not recorded
3 source dossiers
Smart Water (Springer, peer-reviewed) — Singapore water management
- Stable source ID
src-2fb4ca943c41eb65- Publisher
- Name not classified · link.springer.com
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-17
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
A journal article on Singapore water management; the full text is not openly readable. The page states no publication date.
- Claims linked
Smart Water Magazine (trade) — PUB adopts smart tools to detect and pre-empt pipe leaks (content published by PUB)
- Stable source ID
src-f15a584e6a4e52fd- Publisher
- Name not classified · smartwatermagazine.com
- Type / language
- web-page · language not classified
- Published
- 2020-11-12
- Updated
- Not recorded
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-17
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
Leak sensors: 120 units on ~70km of mains from 2017, scaling to 1,200 islandwide, ~3m location accuracy.
PUB, Singapore's National Water Agency (authority)
- Stable source ID
src-8ae1b07de4798dcf- Publisher
- Name not classified · pub.gov.sg
- Type / language
- web-page · language not classified
- Published
- Not recorded
- Updated
- 2026-03-16
- Source last checked
- No source-level check date
- Record last verified
- 2026-07-17
- Dossier created
- 2026-08-27
- Retrieved copy
- No local capture recorded
- Archive
- No archived copy linked
- Content hash
- No captured content hash
- Locator
- Descriptive only — not page/paragraph exact
Open the recorded source note
The agency's own site, used as the reference for the Smart Water Grid programme. The page carries no publication date, only a last update of 16 March 2026.
Known limits of this passport
- Publisher names and source languages have not yet been classified; domains are recorded without guessing.
- Existing source notes are descriptive locators, not page- or paragraph-exact citations.
- A missing archive, publication date or content hash is shown as null rather than inferred.
- The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.
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📎 Cite this project
1001 Smart Cities (2026). “PUB Smart Water Grid & Leak-Detection Sensor Network” — Singapore, Singapore. The Smart City Atlas. https://1001smartcities.org/projects/singapore-smart-water-grid/ (last verified 2026-07-17). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.