1001 Smart Cities
🇰🇷 Seoul

Seoul's Digital Water Meter Rollout

🤖 AI-generated summary of the sources below · 🔎 Last verified · ◆ 11 sourced claims, none individually verified yet

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

Seoul is replacing century-old mechanical water meters with digital, network-connected ones that report hourly and flag leaks automatically. A 2022 pilot put 7,600 meters into two mid-blocks in Jung-gu and Seongbuk-gu on a 1.1 billion won budget; the programme then ran in stages toward 2030 and, in a 2024 restatement, toward full smart metering by 2040. From 2026 the utility is spending 44.1 billion won by 2027 to convert about 300,000 corridor-apartment households — the housing type behind about half of all meter freezes in the city.

In build 📅 since 2022 🤖 Uses AI
Outcome🔄 Ongoing
Evidence🏛️ Official
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 →
Run bySeoul Arisu Headquarters (municipal water utility)
Scale🏙️ City-wide
Cost≈KRW 44.1bn (~$31M) for the 2025-2027 corridor-apartment freeze-prevention phase; KRW 1.1bn (~$870k) for the 2022 pilot
FundingSeoul Metropolitan Government / Seoul Arisu Headquarters (municipal water utility)

📊 Impact

Across the four pilot districts — Jongno, Jung, Seongbuk and Yongsan — meter freeze incidents fell from 1,853 five years ago to 47 this past winter, a 97% drop; in Jung-gu alone, where 93.6% of meters have been converted, they fell from 400 in the winter of 2020-21 to 3 in 2025-26. Seoul still recorded 2,554 freezes citywide this winter. The utility's own bench tests explain the mechanism: a mechanical meter froze in about two hours at minus 20 degrees and in eight hours five minutes at minus 5, while a digital meter is designed not to freeze at minus 20 at all. All of these are figures from Seoul Arisu Headquarters, not independently audited.

🎓 Lesson

The rollout is being paid for by frost, not by metering. Seoul argues for digital meters almost entirely in freeze statistics, because that is where the money is: 19,010 meter freezes over five years, about half of them in corridor-type apartment blocks whose meter cabinets stand in an open external walkway, and 97% of last winter's 2,046 freezes at homes with poor insulation or long absences. So the utility hedges — 300,000 insulation covers and 8,300 thicker cabinet liners for the winter it is in, digital meters for the winters after. And the target keeps moving: 660,000 taps, 30% of the city, by 2030 in the 2022 plan; a cumulative 1.1 million by 2030 in the 2024 one; full coverage by 2040.

📡 Data & IoTSensors & IoTWaterArtificial intelligence

Sources

↗ Seoul city portal — "100 years of manual meter reading ends"Published 6 May 2022City portal, 6 May 2022: stage one converts 7,600 meters in one mid-block each in Jung-gu and Seongbuk-gu on a 1.1 billion won budget; stage two covers the whole Central Waterworks Office area (Jongno, Jung, Seongbuk, Yongsan) by 2026 and stage three parts of the Southern and Gangseo areas by 2030, when 660,000 taps — 30% of the city's meters — are to have been replaced. Seoul manages 105 mid-blocks in all.
↗ Seoul Arisu Headquarters — freeze-prevention programPublished 13 November 2025Winter programme, 13 November 2025: freezes down 33% on the previous winter; of 2,046 meter freezes, 97% at homes with inadequate insulation or long absence; 8,300 vulnerable cabinets to get 8 mm covers, 300,000 insulation covers distributed to corridor-type blocks, 10,000 digital meters secured as roughly four times more freeze-resistant than mechanical ones; a four-stage alert room going 24-hour below minus 10 degrees, with up to 480 staff able to repair 2,500 meters a day.
↗ Dong-A Ilbo — digital meters, freeze results and the 300,000-household programmePublished 17 March 2026Press report of 17 March 2026: 44.1 billion won by 2027 to convert about 300,000 corridor-apartment households; 2,554 freezes citywide this winter; bench tests of mechanical meters freezing in about two hours at minus 20 degrees, 2h32 at minus 15, 4h50 at minus 10 and 8h05 at minus 5, against digital meters designed to withstand minus 20; Jung-gu at 93.6% converted going from 400 freezes to 3; the four pilot districts from 1,853 to 47; corridor apartments about half of 19,010 freezes over five years.
↗ Boan News — 2030/2040 smart-metering targets and AI componentPublished 17 May 2024Trade press, 17 May 2024: stage one is to complete smart-metering infrastructure by 2040 and stage two to build services on the accumulated data; 120,000 meters in awkward or unsafe reading locations converted by 2023, a cumulative 1.1 million by 2030.
↗ Digital Watch Observatory — program overviewPublished 3 May 2022English-language summary of the 2022 announcement of the smart-metering programme.

📅 How old is the evidence?

Two clocks, kept apart: when this entry’s sources were published, and what has happened to its record in the atlas. Documented span: since 2022. 5 of 5 sources carry a publication date, from 3 May 2022 to 17 March 2026.

When the sources were published

  1. Digital Watch Observatory (DiploFoundation) · ngoDigital Watch Observatory — program overview
  2. Seoul Metropolitan Government · city governmentSeoul city portal — "100 years of manual meter reading ends"
  3. Boan News (보안뉴스) · pressBoan News — 2030/2040 smart-metering targets and AI component
  4. Seoul Metropolitan Government · city governmentSeoul Arisu Headquarters — freeze-prevention program
  5. Dong-A Ilbo (동아일보) · pressDong-A Ilbo — digital meters, freeze results and the 300,000-household programme

Every source, with links ↑

What happened to this record

  1. Sources last read
  2. Entered the record

Every revision, permanent →

Show your work What this page rests on and what it can’t tell you · all 11 claims with their sources · the forensic record

Evidence Passport · public beta 11 addressable claims, 5 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 11

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.

Claim 1 clm-b0dfeb1cbf1e3729 quantitative
A 2022 pilot put 7,600 meters into two mid-blocks in Jung-gu and Seongbuk-gu on a 1.1 billion won budget
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The city portal states that stage one in 2022 puts a 1.1 billion won budget into replacing 7,600 meters in two mid-blocks, one each in Jung-gu and Seongbuk-gu, with remote-reading meters.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Seoul city portal — "100 years of manual meter reading ends"
Claim 2 clm-1366c076c3d3a14d quantitative
in a 2024 restatement, toward full smart metering by 2040
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The 2024 trade report states that the city will complete smart-metering infrastructure by 2040 as stage one, and then use the accumulated data for next-generation services.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Boan News — 2030/2040 smart-metering targets and AI component
Claim 3 clm-4c7d2b8211eac7a4 quantitative
From 2026 the utility is spending 44.1 billion won by 2027 to convert about 300,000 corridor-apartment households
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The March 2026 report states that Seoul will invest 44.1 billion won by 2027 in replacing the meters of about 300,000 corridor-apartment households, swapping mechanical meters for digital ones.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dong-A Ilbo — digital meters, freeze results and the 300,000-household programme
Claim 4 clm-58cc70307a0f2964 descriptive
the housing type behind about half of all meter freezes in the city
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The same report states that an analysis of 19,010 meter freezes in Seoul over the past five years found corridor-type apartments accounted for about 50%.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dong-A Ilbo — digital meters, freeze results and the 300,000-household programme
Claim 5 clm-e70efc3e6df875c2 quantitative
meter freeze incidents fell from 1,853 five years ago to 47 this past winter, a 97% drop
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The report states that across the pilot districts of Jongno, Jung, Seongbuk and Yongsan the number of freezes fell from 1,853 five years earlier to 47 this winter, a 97% reduction.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dong-A Ilbo — digital meters, freeze results and the 300,000-household programme
Claim 6 clm-425ce766ea3f67d9 quantitative
in Jung-gu alone, where 93.6% of meters have been converted, they fell from 400 in the winter of 2020-21 to 3 in 2025-26
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The report states that Jung-gu, where the digital meter conversion rate reached 93.6%, went from 400 freeze incidents in the winter of 2020-21 to 3 in the winter of 2025-26.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dong-A Ilbo — digital meters, freeze results and the 300,000-household programme
Claim 7 clm-935126e6cc4ae262 quantitative
Seoul still recorded 2,554 freezes citywide this winter
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The report states that 2,554 freeze incidents occurred across Seoul this winter.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dong-A Ilbo — digital meters, freeze results and the 300,000-household programme
Claim 8 clm-4d5e7ed59a2b861e quantitative
a mechanical meter froze in about two hours at minus 20 degrees and in eight hours five minutes at minus 5, while a digital meter is designed not to freeze at minus 20 at all
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The report gives Seoul Arisu Headquarters' bench-test results: mechanical meters froze in about two hours at minus 20 degrees, 2 hours 32 minutes at minus 15, 4 hours 50 at minus 10 and 8 hours 5 at minus 5, while digital meters are designed not to freeze even at minus 20.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Dong-A Ilbo — digital meters, freeze results and the 300,000-household programme
Claim 9 clm-e4cafdb78975c4f4 quantitative
97% of last winter's 2,046 freezes at homes with poor insulation or long absences
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The utility's November 2025 winter programme states that of the 2,046 water-meter freezes of the previous winter, 97% occurred at households with inadequate insulation or long absence.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Seoul Arisu Headquarters — freeze-prevention program
Claim 10 clm-4130b6eff3a1415c quantitative
300,000 insulation covers and 8,300 thicker cabinet liners for the winter it is in, digital meters for the winters after
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The same programme distributes 300,000 insulating covers to freeze-prone corridor blocks, thickens the cabinet covers at 8,300 vulnerable locations to 8 mm, and secures 10,000 digital meters described as around four times more freeze-resistant than mechanical ones.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Seoul Arisu Headquarters — freeze-prevention program
Claim 11 clm-3068a679fb37676a quantitative
660,000 taps, 30% of the city, by 2030 in the 2022 plan; a cumulative 1.1 million by 2030 in the 2024 one
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this passport
What the mapping says
The 2022 city portal states that 660,000 taps, 30% of Seoul's water meters, are to be replaced by 2030; the 2024 trade report states that a cumulative 1.1 million are to be converted by 2030.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Seoul city portal — "100 years of manual meter reading ends"
  2. Boan News — 2030/2040 smart-metering targets and AI component
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.

unreviewed Revision 2026-08-27-claims-and-sources effective 2026-07-21 · created 2026-08-27

Awaiting operator and domain-expert review; publication of this revision implies neither.

Erratum on this revision's envelope. The snapshot, its hash and its permanent link are untouched.

  • createdAt previously read 2026-08-28T16:00:00Z. The batching script that produced this revision advanced createdAt into the future to satisfy the strictly-increasing order the validator requires per entity. The value never recorded a real event; the corrected value is the moment the revision provably existed in the repository. Corrected to 2026-08-27T02:03:11Z on 2026-08-27; evidence: first appears in commit 0bdc0f6f67, committed 2026-08-27T02:03:11Z.
sha256:42b384950b54bdd44975e307ca8e86d9f8f1ece3d6c97ccda39f4317ccd8c393
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
11
of 11 claims mapped
5
source dossiers
5
publication dates recorded
0
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
Seoul Arisu Headquarters (municipal water utility)
Actor types
utility
Funding model
utility
Funding description
Seoul Metropolitan Government / Seoul Arisu Headquarters (municipal water utility)
Cost
≈KRW 44.1bn (~$31M) for the 2025-2027 corridor-apartment freeze-prevention phase; KRW 1.1bn (~$870k) for the 2022 pilot
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

5 source dossiers

Seoul city portal — "100 years of manual meter reading ends" mediahub.seoul.go.kr · 2 linked claims

Open original source ↗

Stable source ID
src-7bd28b92b79c4616
Publisher
Name not classified · mediahub.seoul.go.kr
Type / language
web-page · language not classified
Published
2022-05-06
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-21
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

City portal, 6 May 2022: stage one converts 7,600 meters in one mid-block each in Jung-gu and Seongbuk-gu on a 1.1 billion won budget; stage two covers the whole Central Waterworks Office area (Jongno, Jung, Seongbuk, Yongsan) by 2026 and stage three parts of the Southern and Gangseo areas by 2030, when 660,000 taps — 30% of the city's meters — are to have been replaced. Seoul manages 105 mid-blocks in all.

Descriptive only — not page/paragraph exact
Claims linked
Seoul Arisu Headquarters — freeze-prevention program news.seoul.go.kr · 2 linked claims

Open original source ↗

Stable source ID
src-1cf9cf3e7547d09f
Publisher
Name not classified · news.seoul.go.kr
Type / language
web-page · language not classified
Published
2025-11-13
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-21
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Winter programme, 13 November 2025: freezes down 33% on the previous winter; of 2,046 meter freezes, 97% at homes with inadequate insulation or long absence; 8,300 vulnerable cabinets to get 8 mm covers, 300,000 insulation covers distributed to corridor-type blocks, 10,000 digital meters secured as roughly four times more freeze-resistant than mechanical ones; a four-stage alert room going 24-hour below minus 10 degrees, with up to 480 staff able to repair 2,500 meters a day.

Descriptive only — not page/paragraph exact
Claims linked
Dong-A Ilbo — digital meters, freeze results and the 300,000-household programme v.daum.net · 6 linked claims

Open original source ↗

Stable source ID
src-176fd1e57b8db527
Publisher
Name not classified · v.daum.net
Type / language
web-page · language not classified
Published
2026-03-17
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-21
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Press report of 17 March 2026: 44.1 billion won by 2027 to convert about 300,000 corridor-apartment households; 2,554 freezes citywide this winter; bench tests of mechanical meters freezing in about two hours at minus 20 degrees, 2h32 at minus 15, 4h50 at minus 10 and 8h05 at minus 5, against digital meters designed to withstand minus 20; Jung-gu at 93.6% converted going from 400 freezes to 3; the four pilot districts from 1,853 to 47; corridor apartments about half of 19,010 freezes over five years.

Descriptive only — not page/paragraph exact
Claims linked
Boan News — 2030/2040 smart-metering targets and AI component m.boannews.com · 2 linked claims

Open original source ↗

Stable source ID
src-8bad572eb411c7c5
Publisher
Name not classified · m.boannews.com
Type / language
web-page · language not classified
Published
2024-05-17
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-21
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Trade press, 17 May 2024: stage one is to complete smart-metering infrastructure by 2040 and stage two to build services on the accumulated data; 120,000 meters in awkward or unsafe reading locations converted by 2023, a cumulative 1.1 million by 2030.

Descriptive only — not page/paragraph exact
Claims linked
Digital Watch Observatory — program overview dig.watch · background

Open original source ↗

Stable source ID
src-a5779ee2eb2f70f4
Publisher
Name not classified · dig.watch
Type / language
web-page · language not classified
Published
2022-05-03
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-07-21
Dossier created
2026-08-28
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

English-language summary of the 2022 announcement of the smart-metering programme.

Descriptive only — not page/paragraph exact
Claims linked
Background source; no baseline claim points here
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.

Continue exploring

Compare this project

🇵🇪 SEDAPAL Smart Water Meters — Remote Shutoff Pilot · Lima Smart water meters at very different scale: Lima's pilot covers ~43 meters with remote shutoff, Seoul is going citywide by 2040. 🇹🇷 ISKI Centralized SCADA Water Balancing Strategy · Istanbul Two utility-telemetry angles on water loss: Istanbul's SCADA/DMA targets non-revenue water, Seoul's meters target freeze damage and billing. 🇬🇧 Thames Water Smart Metering & AI Leak Detection · London Smart water metering at scale: Seoul targets citywide by 2040; London's Thames Water has passed 1.2M+ meters with AI leak detection.

Explore the wider context

📟 A Reading Is Not a Decision📡 Sensors & IoT guide🏙️ Seoul city profile📡 Data & IoT projects📖 Adaptive traffic signals📖 District metering area (DMA)📖 Non-revenue water (NRW)
📎 Cite this project

1001 Smart Cities (2026). “Seoul's Digital Water Meter Rollout” — Seoul, South Korea. The Smart City Atlas. https://1001smartcities.org/projects/seoul-smart-water-meters/ (last verified 2026-07-21). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

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