Permanent project revision

ISKI Centralized SCADA Water Balancing Strategy

Revision 2026-08-26-p1-quality-uplift · effective 2026-08-26

Superseded. A later revision exists: 2026-08-27-source-dating →

unreviewed

Created the first structured Evidence Passport with 7 claims and 4 source dossiers.

sha256:19176178ea078b8dfe659348a8191d66a6b3ea3e83227fed3f0b9bdb4b045d0b

All revisions → Current entity page →

Change set

add /evidencePassport — Added claim-level evidence mapping and source dossiers.
add /revisionHistory — Established a permanent, hash-addressed baseline revision.

7: of 7 claims mapped
4: source dossiers
2: publication dates recorded
0: archives linked
0: exact locators
0: content captures hashed

Claims, one by one

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-2b977a6e668d21f4 descriptive

splits Istanbul's drinking-water network into district metering areas that can be watched and managed remotely

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: Sozcu reports that ISKI installed 420 district metering areas so that network lines gained both regional traceability and remote manageability, and that these zones were integrated with the SCADA system.
Caveat: No claim-specific caveat recorded

Claim 2 clm-244d7c8591ed2606 quantitative

fell from 22.31% in 2019 to 18.63% at the end of 2024

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: Verbatim: '5 yil once yuzde 22,31 olan su kayip ve kacak orani, yapilan yatirimlar ile 2024 yili sonunda yuzde 18,63'e dustu' - the loss and leakage rate, 22.31% five years earlier, fell to 18.63% at the end of 2024.
Caveat: No claim-specific caveat recorded

Sources carrying this claim

Sozcu (press)

Claim 3 clm-84c260a1d9980505 quantitative

hydraulic modelling of 18,500 kilometres of mains and the installation of 420 metering areas

Published field: snippet · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: Verbatim: 'ISKI, 18.500 kilometre icme suyu hattinin hidrolik modellemesini yaparak ... 420 adet DMA (Izole Alt Bolge) montaji gerceklestirilerek'.
Caveat: No claim-specific caveat recorded

Sources carrying this claim

Sozcu (press)

Claim 4 clm-6630bdff5e7ad540 quantitative

22.31% in 2019, 20.68% in 2020, 20.52% in 2021, 19.45% in 2022, 18.94% in 2023 and 18.63% at the end of 2024

Published field: impact · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: Sozcu prints the annual series in full: '2019 yilinda yuzde 22,31 ... 2020: %20,68 2021: %20,52 2022: %19,45 2023: %18,94 2024: %18,63'.
Caveat: No claim-specific caveat recorded

Sources carrying this claim

Sozcu (press)

Claim 5 clm-bdbe482b5cbf8ae2 quantitative

The utility puts its spending on the programme at more than 1 billion lira

Published field: impact · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: Verbatim: 'ISKI, su kayip ve kacak oranini azaltabilmek icin 1 milyar TL'nin uzerinde yatirim yapti' - ISKI invested over 1 billion lira to reduce the loss and leakage rate.
Caveat: No claim-specific caveat recorded

Sources carrying this claim

Sozcu (press)

Claim 6 clm-1de8e022e976008f quantitative

says the saving is worth about 50 days of Istanbul's water demand

Published field: impact · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: Verbatim: 'Bu azalma, Istanbul'un 50 gunluk su ihtiyacina denk geliyor' - this reduction corresponds to 50 days of Istanbul's water need.
Caveat: The utility's own framing of the saving, not an independently checked equivalence.

Sources carrying this claim

Sozcu (press)

Claim 7 clm-87ec6aeb13f87647 quantitative

the Istanbul branch of the Chamber of Environmental Engineers, which put the loss at 22.3% in its own 2020 study, says the level to aim for is 5%

Published field: lesson · verbatim
Mapping: mapped · no interpretation or interpolation added by this passport
What the mapping says: Daily Sabah, December 2020: 'Almost 22.3% of the water supplied to Istanbul from various sources do not even reach the grid due to leaks, Medet Guney, the board secretary of the Istanbul branch of the Chamber of Environmental Engineers (CMO), told Demiroren News Agency', reporting a study by that body; and 'The leakage rate should urgently be brought down to acceptable levels of 5% through significant investments, he said.'
Caveat: No claim-specific caveat recorded

Sources carrying this claim

Daily Sabah (press)

Source dossiers and revision state

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 2026-08-26-p1-quality-uplift effective 2026-08-26 · created 2026-08-26

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

sha256:19176178ea078b8dfe659348a8191d66a6b3ea3e83227fed3f0b9bdb4b045d0b

Revision history → Permanent version link → Machine-readable record → Evidence Constitution →

7: of 7 claims mapped
4: source dossiers
2: publication dates recorded
0: archives linked
0: exact locators
0: content captures hashed

Governance facts carried by the record

Operator: İSKİ (Istanbul Water and Sewerage Administration)
Actor types: utility
Funding model: utility
Funding description: Not recorded
Cost: Not recorded
Ownership: Not recorded
Decision rights: Not recorded
Exit conditions: Not recorded

4 source dossiers

ISKI (operator) - SCADA technology iski.istanbul · 1 linked claim

Open original source ↗

Stable source ID: src-65cd0c60eac0cb95
Publisher: Name not classified · iski.istanbul
Type / language: web-page · language not classified
Published: Not recorded
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-08-26
Dossier created: 2026-08-26
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
The utility's own description of the SCADA layer over the network. The host did not answer automated requests, so no date is recorded here.
Descriptive only — not page/paragraph exact
Claims linked: clm-2b977a6e668d21f4

Sozcu (press) sozcu.com.tr · 6 linked claims

Open original source ↗

Stable source ID: src-9d5ab9122ccdaddb
Publisher: Name not classified · sozcu.com.tr
Type / language: web-page · language not classified
Published: 2025-02-22
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-08-26
Dossier created: 2026-08-26
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Reports the utility's full annual loss series 2019-2024, the investment total, and the modelling and metering-area counts behind it.
Descriptive only — not page/paragraph exact
Claims linked: clm-2b977a6e668d21f4
clm-244d7c8591ed2606
clm-84c260a1d9980505
clm-6630bdff5e7ad540
clm-bdbe482b5cbf8ae2
clm-1de8e022e976008f

Daily Sabah (press) dailysabah.com · 1 linked claim

Open original source ↗

Stable source ID: src-2c8783b3d6de98b0
Publisher: Name not classified · dailysabah.com
Type / language: web-page · language not classified
Published: 2020-12-22
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-08-26
Dossier created: 2026-08-26
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
The Chamber of Environmental Engineers' own measurement of Istanbul's losses and the level it says the city should be aiming for.
Descriptive only — not page/paragraph exact
Claims linked: clm-87ec6aeb13f87647

Wikipedia - Water supply and sanitation in Istanbul (reference) en.wikipedia.org · background

Open original source ↗

Stable source ID: src-27ec8b884a537b4b
Publisher: Name not classified · en.wikipedia.org
Type / language: web-page · language not classified
Published: Not recorded
Updated: Not recorded
Source last checked: No source-level check date
Record last verified: 2026-08-26
Dossier created: 2026-08-26
Retrieved copy: No local capture recorded
Archive: No archived copy linked
Content hash: No captured content hash
Locator: Open the recorded source note
Background on the network. Continuously revised, so it states no publication date.
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.